Get ready for Windows 11 version 26H2



 Windows IT Pro Blog:

The next annual update for Windows 11 is coming soon and is already available to Windows Insiders! Windows 11, version 26H2 continues our focus on delivering a predictable, low-disruption update experience for organizations and IT professionals.

For devices already running recent versions of Windows 11, this release should be easy to adopt. It builds on the same platform and servicing approach introduced in prior releases, while continuing to improve how updates are delivered, tested, and deployed.

In this post, we'll walk through how to prepare for Windows 11, version 26H2.

A familiar update experience, refined​

Windows 11, version 26H2 uses the same shared servicing model as recent releases available annually in the second half of the calendar year. Supported devices get this feature update as a small enablement package instead of a full OS replacement.

If your organization is already on Windows 11, version 24H2 or 25H2, the update to 26H2 is similar to a regular monthly update in most environments:
  • A small, quick installation
  • Minimized disruption to users
  • No need for full reimaging or complex deployment motions
Note: Devices running Windows 11, version 26H1 won't be able to update to version 26H2. Instead, they'll have a path to update to a future Windows release. This is because Windows 11, version 26H1 is based on a different Windows core than Windows 11, versions 24H2, 25H2, and 26H2. Here's What to know about Windows 11, version 26H1.

This is possible because multiple versions of Windows 11 share a common servicing branch, including:
  • The same source code base
  • The same security and quality updates
  • The same compatibility validation
The difference between versions is simply which features are enabled.

Diagram showing the steps when new features are enabled when versions share a servicing branch

Shared servicing branch progression

Why this matters for IT organizations​

The shared servicing model isn't just a technical detail. It directly impacts how you manage updates across your environment. Compared to full OS upgrades of the past, Windows 11, version 26H2 comes with reduced deployment complexity, improved compatibility confidence, and faster time to value.

Reduced deployment complexity​

Because features are delivered continuously and enabled later, there's no large "upgrade event." This makes planning easier and reduces operational overhead.

Improved compatibility confidence​

Devices moving between versions on the same servicing branch typically benefit from:
  • Existing application compatibility validation
  • Lower risk of regressions
  • Fewer surprises during rollout

Faster time to value​

With smaller updates and faster installations, organizations can move more quickly to the most current release. New features reach you without lengthy deployment cycles.

Support lifecycle considerations​

As with previous annual feature updates, moving to Windows 11, version 26H2 resets the Windows support lifecycle for your devices.

This provides:
  • 24 months of support for Home, Pro, Pro EDU, and Pro for Workstations editions
  • 36 months of support for Enterprise, Education, IoT Enterprise, and Enterprise Multi-session editions
What does it mean for your servicing strategy? The annual update becomes a key milestone for maintaining a supported and secure environment.

How to prepare for Windows 11, version 26H2​

Already managing Windows 11 in your organization? Preparing for 26H2 should align with your existing update processes.

1. Validate today​

Begin testing with devices running recent versions of Windows 11 to confirm compatibility with your apps, policies, and infrastructure.

If you'd like to get a peak of what's coming and begin previewing version 26H2 on devices now, the update is available through the Windows Insider Program in the Experimental channel. Otherwise, your organization might prefer to wait for the update to become available in Release Preview before doing more extensive testing. At that stage, the experience is closer to final shipping quality. We'll have more information to share when version 26H2 is in Release Preview.

2. Use your existing deployment tools​

Windows 11, version 26H2 will be available through familiar channels, including:
  • Windows Autopatch
  • Microsoft Intune
  • Windows Server Update Services (WSUS)

3. Plan your rollout rings​

Use your standard deployment rings to:
  1. Pilot the update with a small group of devices.
  2. Expand gradually based on validation results.

4. Stay current​

Windows features are delivered continuously. Stay up to date with monthly updates to help ensure a smoother transition when the feature update becomes available.

Timeline showing features delivered monthly and enabled together in a feature update

Feature delivery over time with enablement moment

Looking ahead and staying informed​

Windows 11, version 26H2 continues the move toward a more predictable and efficient servicing model. This model helps reduce disruption while helping your organization stay secure and up to date. By building on a shared platform and delivering innovation continuously, Windows enables you to focus less on large upgrade projects and more on delivering value to your users.

We'll continue to share updates and guidance as Windows 11, version 26H2 becomes available. In the meantime, test it in the Windows Insider Program's Experimental channel and use the updated plan-prepare-deploy learning path to get ready.

To use the correct enablement package based on your currently installed build:

KB5122776 is the enablement package for the Insider Experimental Preview Build 26340. In the installed updates list, it shows up as “Feature Enablement for Windows (Ge) 26H2 Insider Refresh - KB5122776 - 2026.08 A - BuildNumber Update.”

KB5121794 is the enablement package for the retail 26H2 release, listed as “Feature Enablement for Windows (Ge) 26H2 - KB5121794 - 2026.07 D.”


KB5122776 Enablement Package for 64-bit Windows 11 26H2​
Windows11.0-KB5122776-x64.msu (173 KB)​


OR​

KB5122776 Enablement Package for ARM64 Windows 11 26H2​
Windows11.0-KB5122776-arm64.msu (172 KB)​




KB5121794 Enablement Package for 64-bit Windows 11 26H2​
Windows11.0-KB5121794-x64.msu (174 KB)​


OR​

KB5121794 Enablement Package for ARM64 Windows 11 26H2​
Windows11.0-KB5121794-arm64.msu (174 KB)​




 Source:

 

Attachments

Last edited:
I have the advantage of having quite a few PC's (look at 'My Computers' below). I have set just two of them with a target feature update for 26H2, my Systems Five and Seven. I'll see how they go before considering it for the others.
I have surplus computers as well, but I I have a bunch of other stuff going on besides computers. 😊 As long as Windows keeps working reasonably well...
 

My Computers My Computers

  • At a glance

    Win 11 Pro 25H2, Build 26200.9550.Intel Core i5 14500, 14th Generation64GB DDR4GeForce RTX 4060
    OS
    Win 11 Pro 25H2, Build 26200.9550.
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14500, 14th Generation
    Motherboard
    Gigabyte B760M G P WIFI
    Memory
    64GB DDR4
    Graphics Card(s)
    GeForce RTX 4060
    Sound Card
    Chipset Realtek
    Monitor(s) Displays
    LG 45" Ultragear & Acer 24" 1080p
    Screen Resolution
    5120x1440 & 1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 3D NAND NVMe M.2 SSD (O/S)
    Silicon Power 2TB US75 NVMe PCIe Gen4 M.2 2280 SSD (backup)
    Crucial BX500 2TB 3D NAND (2nd backup)
    Seagate 4TB Ironwolf, rotating HDD secondary backup
    External off-line backup Drives: 2 NVMe 4TB drives in external enclosures
    PSU
    Thermaltake Toughpower GF3 750W
    Case
    LIAN LI LANCOOL 216 E-ATX PC Case
    Cooling
    Lots of fans!
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Defender Security
  • At a glance

    Win 11 Pro 25H2, Build 26200.9550.Intel Core i5 1440032GB DDR5Intel 700 Embedded GPU
    Operating System
    Win 11 Pro 25H2, Build 26200.9550.
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
    Graphics card(s)
    Intel 700 Embedded GPU
    Sound Card
    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB NVMe Gen4 SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    Seagate 4TB Ironwolf, rotating HDD secondary backup
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Defender Security
  • Nimo N171 17" Laptop, (Intel i3-1215U, 16GB RAM, 2TB NVMe, Win11 Pro)
    Acemagic Vista Mini PC V1 (Intel N150, 16GB RAM, 1TB NVMe, Win11 Pro)
    HP ENVY h8-1540t, (24GB RAM, 2TB SSD, 2TB HDD, Win11 Pro)
So I run out of patience and forced 26H2 with Windows11.0-KB5121794-x64_5e20a3cce48d6611b16bdec42b07167f5456586a.msu.
All was fine yesterday, even got few % better benchmark scores, all tests clean but.....
This morning checked for updates (which are set to manual) and this showed up.
Snimak ekrana 2026-09-24 061243.webp

It run and run downloading at some pretty slow speeds (up to 30Mbps) while it displayed Installing 0%. and never moved for an hour. After a restart it shoved Installing 1% and after few minutes downloads stopped. Checked installed updates and it shows as fully installed !!!!
Anybody else got it after forcing 26H2 ????

Strange thing is that it's supposed to be for Ms 365 which my windows don't have in any part
1790235537610.webp

My options now.
1. Stop or uninstall it and/or revert to 25H2 (no idea how)
2. Restore to backup before 26H2 (one day old, no many changes since)
3. In place upgrade with 25H2 ISO or try same with online reset.
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
@CountMike


I didn't get the "click to run update support". And I used the KB5121794 Enablement Package.
I checked Windows Updates > Windows Insider Program, and I'm still not an Insider.
I have no... MS365, Office 365, Copilot, OneDrive, any kind of AI, and I use Bitdefender Total Security.

Since you have a backup, you can let it run for a few days and see what happens.


Image1.webp
 

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
@CountMike


I didn't get the "click to run update support".
I have no... MS365, Office 365, and I use Bitdefender Total Security.

Since you have a backup, you can let it run for a few days and see what happens.
I postponed all updates until next Monday, it's unlikely any will be released by then and will defer any other changes to windows. Only thing it does is to cut down on my limited to 80-100Mbps internet speed.
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
I postponed all updates until next Monday, it's unlikely any will be released by then and will defer any other changes to windows. Only thing it does is to cut down on my limited to 80-100Mbps internet speed.


Technically, the Enablement Package does say: Insider - Release Preview (RP).
I see you're DEV... that may make a difference?

The EP worked fine on my system, I even got the new Taskbar options, with Sep 22nd's Preview update.


Image1.webp


The really weird part is that it shows the KB5121792 as installed on the 22nd, but I did it about 2-3 weeks ago. 🤷‍♂️

Microsoft should change their name to: LooseEndsWare. :D

Image1.webp Image1.webp
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
Technically, the Enablement Package does say: Insider - Release Preview (RP).
I see you're DEV... that may make a difference?

The EP worked fine on my system, I even got the new Taskbar options, with Sep 22nd's Preview update.


View attachment 183952


The really weird part is that it shows the KB5121792 as installed on the 22nd, but I did it about 2-3 weeks ago. 🤷‍♂️

View attachment 183953 View attachment 183954
Edition Windows 11 Pro
Version 26H2
Installed on ‎20.‎9.‎2025.
OS build 26300.9550
Experience Windows Feature Experience Pack 1000.26100.372.0

Only difference from former 25H2 is 26300.9550 instead of 26200.9550
MS Office is 2019 pro.
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
Edition Windows 11 Pro
Version 26H2
Installed on ‎20.‎9.‎2025.
OS build 26300.9550
Experience Windows Feature Experience Pack 1000.26100.372.0

Only difference from former 25H2 is 26300.9550 instead of 26200.9550
MS Office is 2019 pro.


Well you know how it is with Microsoft... er... Loose Ends Ware. :-)


The 23H2 and 25H2 Enablement Packages were like that too. MS claims the previous 2xH2's had all the stuff already and the Enablement Package, just turned the features ON.

Considering that the Enablement Packages only take about three seconds and a reboot to install... I'm willing to believe them.
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
To sum things up, all I know about the Enablement Package, is the following...



0000000 Enablement Package.webp
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
@CountMike

If you're really on Insider-DEV, maybe you should use the KB5122776 instead?

Go back to 25H2 and try again using: KB5122776
Maybe that will take care of the gremlins, you've noticed?


At the link just above, it says that KB5122776 will give you 26H2... 26340.xxxx

The title says:
Windows 11 Insider Release Preview build 26300.xxxx...

But the note below says this...

Image1.webp




You can pick up these buttons in the lobby on the way out... :D

Ziggy.webp
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26300.9550 ♦♦♦♦♦♦♦26H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
Strange thing is that it's supposed to be for Ms 365 which my windows don't have in any part
Click-to-run isn’t exclusive to Office 365. Office 2019 uses it also.
 

My Computer My Computer

At a glance

Windows 11 Enterprise 25H2
OS
Windows 11 Enterprise 25H2
Click-to-run isn’t exclusive to Office 365. Office 2019 uses it also.
Question is why is it showing up at all when I disabled updates for "Other MS products" and my 2019 office is not 365 but standalone package. ?
I'm doing this right now, first time it didn't work.
1790247890594.webp
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
Question is why is it showing up at all when I disabled updates for "Other MS products" and my 2019 office is not 365 but standalone package. ?
I'm doing this right now, first time it didn't work.
View attachment 183964
I don’t know what the update does; it doesn’t provide a KB number. Could be an update for the Click-to-run system itself, I don’t know.

And like I said, Office 2019 uses Click-to-run also; it’s not only used by 365.
 

My Computer My Computer

At a glance

Windows 11 Enterprise 25H2
OS
Windows 11 Enterprise 25H2
I don’t know what the update does; it doesn’t provide a KB number. Could be an update for the Click-to-run system itself, I don’t know.

And like I said, Office 2019 uses Click-to-run also; it’s not only used by 365.
Ok. I'm doing this now, will see if/when it finishes., stuck at install 20% for a while with little else happening. Still have couple of other options beside restoring backup. i know that would be easiest but would like to see if other repair options work. Looks like I used wrong way to unable 26H2. Downloaded that KB.
PS. didn't work this (Repair) way, will try reset next
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
Ok. I'm doing this now, will see if/when it finishes., stuck at install 20% for a while with little else happening. Still have couple of other options beside restoring backup. i know that would be easiest but would like to see if other repair options work. Looks like I used wrong way to unable 26H2. Downloaded that KB.
PS. didn't work this (Repair) way, will try reset next
Edit: Reset doesn't keep APPs and programs so I will try by downloading last 25H2 ISO and In place upgrade next.
 

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
So I run out of patience and forced 26H2 with Windows11.0-KB5121794-x64_5e20a3cce48d6611b16bdec42b07167f5456586a.msu.
All was fine yesterday, even got few % better benchmark scores, all tests clean but.....
This morning checked for updates (which are set to manual) and this showed up.
View attachment 183947

It run and run downloading at some pretty slow speeds (up to 30Mbps) while it displayed Installing 0%. and never moved for an hour. After a restart it shoved Installing 1% and after few minutes downloads stopped. Checked installed updates and it shows as fully installed !!!!
Anybody else got it after forcing 26H2 ????

Strange thing is that it's supposed to be for Ms 365 which my windows don't have in any part
View attachment 183949

My options now.
1. Stop or uninstall it and/or revert to 25H2 (no idea how)
2. Restore to backup before 26H2 (one day old, no many changes since)
3. In place upgrade with 25H2 ISO or try same with online reset.
1. Stop or uninstall it and/or revert to 25H2
 

My Computer My Computer

At a glance

26200.8037i5-11400F32GBGeforce GT-1030
OS
26200.8037
Computer type
PC/Desktop
CPU
i5-11400F
Motherboard
Gigabyte
Memory
32GB
Graphics Card(s)
Geforce GT-1030
Keyboard
Logitech K400
Mouse
Logitech M720
Internet Speed
600 Mb
Browser
Edge

My Computer My Computer

At a glance

W11 Pro and Insider DevAMD Ryzen 9 7900x2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30Gigabyte Rx 6600XT Gaming OC 8G Pro
OS
W11 Pro and Insider Dev
Computer type
PC/Desktop
Manufacturer/Model
Home brewed
CPU
AMD Ryzen 9 7900x
Motherboard
ASROCK b650 PRO RS
Memory
2x16GB Kingston 6000MHz, Cl 32 @ 6200MHz Cl30
Graphics Card(s)
Gigabyte Rx 6600XT Gaming OC 8G Pro
Sound Card
MB, Realtek Ac1220p
Monitor(s) Displays
3 x 27"
Screen Resolution
1080p
Hard Drives
Kingston KC3000. 1TBSamsung 970 evo Plus 500GB, Crucial P1 NVMe 1TB, Lexar NVMe 2 TB, Silicon Power M.2 SATA 500GB
PSU
Seasonic 750W
Case
Custom Raidmax
Cooling
Arctic Liquid Freezer III 360mm
Internet Speed
20/19 mbps
Looks like I used wrong way to unable 26H2.
The correct way to undo a feature update by enablement package is simply to uninstall the enablement package.

1790250548120.webp
 

My Computers My Computers

  • At a glance

    Windows 11 HomeAMD Athlon Silver 3050U8GBRadeon Graphics
    OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23-R9VY
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD (from April 2026: 250GB EVO 850)
    Internet Speed
    150 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    UPDATE - 11 April 2026: due to lid hinges starting to break up this laptop has been retired from active duty. The OS with all software and files has been migrated to my System Seven in 'Other systems' to carry on as my general purpose 'main machine'.

    I've now clean installed 25H2 and used Garlin's scripts to update Secure Boot to CA 2023 and revoke the PCA 2011 certificates. It's new role is to test secure boot issues.

    Info for 2021-2026:
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, 24H2 on 3rd October 2024 through Windows Update by setting the Target Release Version for 24H2, and 25H2 on 30th September 2025 through Windows Update by setting the Target Release Version for 25H2.
  • At a glance

    Windows 11 ProIntel® Core™ i5-520M8GB(integrated graphics) Intel HD Graphics
    Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.

    In-place upgrade to 22H2 using ISO and a workaround.
    Feature Update to 23H2 by manually installing the Enablement Package.
    In-place upgrade to 24H2 using hybrid 23H2/24H2 install media.
    Upgraded to 25H2 by Enablement Package.

    Also running Insider Experimental 263xx and 29xxx builds and Windows 10 as native boot .vhdx.
  • My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro.

    My SYSTEM FOUR was a 2-in-1 convertible Lenovo Yoga 11e (1st gen) type 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device. This has now been sold. It has been replaced by my System Eight.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 1TB NVMe ssd, supported device running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds (and a few others) as a native boot .vhdx.

    My SYSTEM SIX is a Dell Latitude 5550, Core Ultra 7 165H, 64GB RAM, 1TB NVMe SSD, supported device, Windows 11 Pro, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, 1920x1080 touchscreen, Intel Core i7-8650U, 16GB RAM, 512GB NVMe SSD + 2nd 512GB NVMe SSD, a supported device for Windows 11. This is my current general purpose 'main machine'. The installed Windows 11 Home from my System One has been migrated to this machine. As its new home has an existing digital licence for Pro I've been able to upgrade the migrated OS from Home to Pro.

    My SYSTEM EIGHT is a 2-in-1 convertible Lenovo Yoga 11e (5th gen) type 20LN, Celeron N4120, 8GB RAM, 512GB NVMe ssd, a supported device for Windows 11. Currently running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds as native boot vhdx.
OS build 26300.9550
[I did the KB5129195 September CU but not the subsequent KB5124010 Preview update that you did.]
I updated to 26H2 using the same KB as you [from the link on page 1 of this thread].
I have found no problems with my 26H2 so far.


Denis
 
Last edited:

My Computer My Computer

At a glance

Windows 11 Home x64 Version 26H2 Build 26300....
OS
Windows 11 Home x64 Version 26H2 Build 26300.9457
The Windows11.0-KB5121794-x64.msu posted on the 1st page is dated earlier than the one posted later on this thread (I can't locate the post now).
Page 1: Windows11.0-KB5121794-x64.msu 8/27/2026 size: 174KB
Page x: Windows11.0-KB5121794-x64_870a6b16d4e0e0eeeaa02b5306df5b4ecb39f563.msu 9/23/2026 size: 171KB

The more recent one has an addition to its name that reminds me of daily releases naming conventions or something.

From the comments, it seems the earlier release behaves better. Am I right or off the wall?

Thanks in advance for any pointers.
 

My Computer My Computer

At a glance

Windows 11 Pro for Workstations 25H2 26200.95506C+4c Intel 13th Gen Intel(R) Core(TM) i5-134...64 GBNVIDIA GeForce RTX 4060, Intel UHD Graphics 730
OS
Windows 11 Pro for Workstations 25H2 26200.9550
Computer type
PC/Desktop
Manufacturer/Model
ASRock
CPU
6C+4c Intel 13th Gen Intel(R) Core(TM) i5-13400, 4100 M
Motherboard
ASRock B660M-HDV
Memory
64 GB
Graphics Card(s)
NVIDIA GeForce RTX 4060, Intel UHD Graphics 730
Sound Card
Realtek
Monitor(s) Displays
AOC 24V2W1G5
Screen Resolution
1920x1080
Hard Drives
Samsung SSD 990 Pro with Heatsink
Keyboard
Logitech
Mouse
Logitech
Internet Speed
1GB
Antivirus
Windows Defender
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