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.




 Source:

 
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If you're on Windows Pro, you can stay on Windows 25H2 for one more year. If you're on Windows Enterprise/Education, you get two years. Upgrading to 26H2 will reset the clock.
 

My Computers My Computers

  • At a glance

    Windows 11 Education For 25H2Intel® Core i7 5500u8 GBIntel HD Family Graphics 5500 AMD Firepro 4150M
    OS
    Windows 11 Education For 25H2
    Computer type
    Laptop
    Manufacturer/Model
    HP ZBook G2
    CPU
    Intel® Core i7 5500u
    Motherboard
    HP
    Memory
    8 GB
    Graphics Card(s)
    Intel HD Family Graphics 5500 AMD Firepro 4150M
    Sound Card
    Realtek High Audio
    Hard Drives
    1 TB SSD
    Mouse
    HP USB Mouse
    Antivirus
    Windows Defender
  • At a glance

    Windows 11 Pro For Workstations 25H2Xeon 1535m v632 GBAMD Quadro Pro 4100
    Operating System
    Windows 11 Pro For Workstations 25H2
    Computer type
    Laptop
    Manufacturer/Model
    HP Zbook G4
    CPU
    Xeon 1535m v6
    Motherboard
    HP
    Memory
    32 GB
    Graphics card(s)
    AMD Quadro Pro 4100
    Sound Card
    Bang and Olufson Audio
    Hard Drives
    1TB SSD
    Mouse
    HP USB Mouse
    Antivirus
    Windows Defender
1781899337884.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

My Computers My Computers

  • At a glance

    Win11 Pro 25H2 (RTM+)Intel i7-14650HX32 GBNo GPU - Built-in Intel Graphics
    OS
    Win11 Pro 25H2 (RTM+)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Acemagic
    CPU
    Intel i7-14650HX
    Memory
    32 GB
    Graphics Card(s)
    No GPU - Built-in Intel Graphics
    Sound Card
    Integrated
    Monitor(s) Displays
    Varies as machine will often be moved to locations with different monitors
    Screen Resolution
    Varies
    Hard Drives
    1 x 1TB Gen 4 NVMe SSD
    PSU
    120W Power Brick
    Keyboard
    Corsair K70 Max RGB Magnetic Keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    1Gb Up / 1 Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
  • At a glance

    Win11 Pro 25H2 (RTM+)Intel i7-1255U16 GBIntel Iris Xe Graphics
    Operating System
    Win11 Pro 25H2 (RTM+)
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkBook 13x Gen 2
    CPU
    Intel i7-1255U
    Memory
    16 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek® ALC3306-CG codec
    Monitor(s) Displays
    13.3-inch IPS Display
    Screen Resolution
    WQXGA (2560 x 1600)
    Hard Drives
    2 TB 4 x 4 NVMe SSD
    PSU
    USB-C / Thunderbolt 4 Power / Charging
    Keyboard
    Backlit, spill resistant keyboard
    Mouse
    Buttonless Glass Precision Touchpad
    Internet Speed
    1Gb Up / 1Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
    Other Info
    WiFi 6e / Bluetooth 5.1 / Facial Recognition / Fingerprint Sensor / ToF (Time of Flight) Human Presence Sensor

My Computer My Computer

At a glance

Windows 11AMD Ryzen 8700G64 GBOnboard
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Generic
CPU
AMD Ryzen 8700G
Motherboard
Gigabyte B650 UD AC
Memory
64 GB
Graphics Card(s)
Onboard
Sound Card
Onboard
Monitor(s) Displays
Del U2723QE
Screen Resolution
3840 x 2160
Hard Drives
Corsiar MP600 1TB
PSU
Silverstone 750 GOLD
Case
Silverstone FARA 513
Same error here, on latest 25H2 (non-Insider)

Image1.webp


A Microsoft Learn article recommended running SFC and Disk Cleanup. Didn't help.

Just for the halibut... I rebooted (cause that always fixes everything), and it didn't help either.

Just checked UUP Dump... it only goes up to 26H1.


Me thinks it's for Insiders only.
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    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?
I think you have to be on the experimental, AKA Dev build (26300) if you want it now guys.
 

My Computers My Computers

  • At a glance

    Windows 11 25H2Intel Core Ultra 9 275HX (24-Core)64GB DDR5 6400MT/sNVIDIA GeForce RTX 5080 and Intel UHD Graphics
    OS
    Windows 11 25H2
    Computer type
    Laptop
    Manufacturer/Model
    Alienware 18 Area-51
    CPU
    Intel Core Ultra 9 275HX (24-Core)
    Motherboard
    Alienware
    Memory
    64GB DDR5 6400MT/s
    Graphics Card(s)
    NVIDIA GeForce RTX 5080 and Intel UHD Graphics
    Sound Card
    Onboard, Realtek high-performance Audio chips (ALC3329 & ALC1708))
    Monitor(s) Displays
    300HZ 18-inch QHD 500 nit Comfort View+
    Screen Resolution
    2560 x 1600
    Hard Drives
    2TB NVMe M.2 PCIe Gen 5 SSD
    Case
    Magnesium Alloy
    Cooling
    Advanced Cryo-Tech Quad-Fan Cooling system & large vapor chamber
    Keyboard
    Cherry MX ultra low profile mechanical keyboard with per key AlienFX RGB lighting
    Mouse
    Logitech MX Master 4
    Browser
    Vivaldi (main), Firefox, Chrome, Edge
    Antivirus
    MS Defender and Malwarebytes Free
  • At a glance

    Windows 11 25H2Qualcomm Snapdragon X Elite (12 Core) ARM bas...16GB LPDDR5Qualcomm Adreno X1-85
    Operating System
    Windows 11 25H2
    Computer type
    Laptop
    Manufacturer/Model
    Microsoft Surface Laptop 7
    CPU
    Qualcomm Snapdragon X Elite (12 Core) ARM based CPU
    Motherboard
    Microsoft Corp.
    Memory
    16GB LPDDR5
    Graphics card(s)
    Qualcomm Adreno X1-85
    Sound Card
    Omnisonic speakers with Dolby Atmos spatial sound
    Monitor(s) Displays
    120 Hz 13.8-inch 600 nit PixelSense Flow touchscreen
    Screen Resolution
    2304x1536
    Hard Drives
    1TB NVMe Gen 4 SSD
    Case
    Anodized Aluminum
    Cooling
    Traditional active cooling fan system
    Keyboard
    Mechanical QWERTY, backlit when in use
    Mouse
    Logitech MX Master 4 and Surface Arc Mouse
    Browser
    Vivaldi (main), Firefox, Chrome, Edge
    Antivirus
    MS Defender and Malwarebytes Free
And just because I'm THAT bored, and because I have a fresh backup... I tried it in Safe Mode with Networking...

Image1.webp
<-------------------------------------------------------------------------- non-Insider
 

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    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?
And just because I'm THAT bored, and because I have a fresh backup... I tried it in Safe Mode with Networking...

View attachment 174675
<-------------------------------------------------------------------------- non-Insider
It's probably giving you an error with the 25h2 file because the update requires .8697; anything less than that might cause an error.
It's probably giving you an error with the 25h2 file because the update requires .8697; anything less than that might cause an error.
 

My Computer My Computer

At a glance

Windows 11 Iot Enterprise 21h2 22000.3260xeon E5-2697v232gb 8x4gb ddr3 1333 mhzgtx 570 poit of view
OS
Windows 11 Iot Enterprise 21h2 22000.3260
Computer type
PC/Desktop
Manufacturer/Model
Asus
CPU
xeon E5-2697v2
Motherboard
rampage iv extreme
Memory
32gb 8x4gb ddr3 1333 mhz
Graphics Card(s)
gtx 570 poit of view
Sound Card
realtek HD (ALC898)
Monitor(s) Displays
samsung b2030
Screen Resolution
1600x900
Hard Drives
2tb hd 5400 rpm
3tb hd 5400 rpm
1tb nvme pcie 3.0
PSU
hx850w
Keyboard
mtek
Internet Speed
500/250 gpon
Browser
r3dfox 146.0
Antivirus
none
It's probably giving you an error with the 25h2 file because the update requires .8697; anything less than that might cause an error.


Yeah. It pretty much says that up top. But I like to try anyway. :D

Image1.webp


Image1.webp
 
Last edited:

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    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?
It's probably giving you an error with the 25h2 file because the update requires .8697; anything less than that might cause an error.
No, it's not that. 26H2 has been hiding in plain sight in the Channel formerly known as Dev since January....

....the 26300 build is currently available in the Insider Dev Channel. In Winver it's still masquerading as 25H2, but in 'Uninstall updates' a 26H2 enablement package can clearly be seen.....

1769886212715-webp.161770


Windows Update Standalone Installer

Installer encountered an error: 0x800b0109

A certificate chain processed, but terminated in a root
certificate which is not trusted by the trust provider.

an untrusted root certificate seems to imply mismatched certificates, possibly due to the CA 2023 updates?
 

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
    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.

    UPDATE - 11 April 2026: due to mechanical deterioration this PC 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'.
  • 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 Dev, and Canary 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 is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    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, Dev, and Canary 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 24H2, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, 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.

My Computers My Computers

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    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?
I'm seeing the exact same thing.
Same error here, on latest 25H2 (non-Insider)

The MSU is signed with the Microsoft Development PCA 2014 certificate, which is only trusted by Insider builds - it is not for production 25H2 builds.

1781906332871.webp



AI Overview said:
The Microsoft Development PCA 2014 is a digital certificate authority used by Microsoft to sign internal, pre-release, and beta software, including Windows Insider builds, debugging tools, and early driver testing. It authenticates files being tested before they receive official production signing.


There's no problem running it on my Dev Experimental (26H2) build (apart of course from it already being installed :D)


1781905935157.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
    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.

    UPDATE - 11 April 2026: due to mechanical deterioration this PC 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'.
  • 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 Dev, and Canary 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 is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    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, Dev, and Canary 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 24H2, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, 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.

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