Cumulative Update for Windows 11 Insider Preview (10.0.26120.770) (KB5039314) Install error - 0x800f0922


Jayce53

Jayce53

Member
Local time
2:31 AM
Posts
5
OS
Windows 11
The update seems to complete (it displays "You're 100% there" followed by "Something didn't go as planned") and then uninstalls whatever it had done.

My current system is:

Windows 11 Pro 24H2 build 26120.751
Windows Feature Experience Pack 1000.26100.6.0

I've tried several times with the same result. Any ideas of how to fix this?
 
Windows Build/Version
24H2 build 26120.751

My Computer My Computer

At a glance

Windows 11Intel Core i9-9900KF64GbNVIDIA GeForce GTX 1660
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Custom build
CPU
Intel Core i9-9900KF
Motherboard
Gigabyte B360M-D3H
Memory
64Gb
Graphics Card(s)
NVIDIA GeForce GTX 1660
Monitor(s) Displays
2 x LG L246WHX
Screen Resolution
1920x1200
Use the batch script to delete Windows updates cache and try again.
 

Attachments

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
Alas, that didn't change anything. I had exactly the same messages after I ran that batch file and rebooted.
 

My Computer My Computer

At a glance

Windows 11Intel Core i9-9900KF64GbNVIDIA GeForce GTX 1660
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Custom build
CPU
Intel Core i9-9900KF
Motherboard
Gigabyte B360M-D3H
Memory
64Gb
Graphics Card(s)
NVIDIA GeForce GTX 1660
Monitor(s) Displays
2 x LG L246WHX
Screen Resolution
1920x1200
Do you see error number?
 

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
You may need to install from iso.

An in place upgrade will also fix corrupt, damaged and missing Windows files.
 

My Computers My Computers

System One System Two

  • 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
Jayce53 said:
Alas, that didn't change anything. I had exactly the same messages after I ran that batch file and rebooted.
Click to expand...
Welcome to Eleven Forum.

Your system should no longer be trying to install the update for 26120.770 (KB5039314), this has been superseded by 26120.961.

www.elevenforum.com

KB5038575 Windows 11 Insider Dev build 26120.961 (24H2) - June 14

UPDATE 7/15: https://www.elevenforum.com/t/kb5038603-windows-11-insider-dev-build-26120-1252-24h2-july-15.26817/ Windows Blogs: UPDATE 6/30: We have temporarily paused the enablement of these features to investigate a few issues reported by Windows Insiders. We plan to begin the enablement...
www.elevenforum.com www.elevenforum.com

To force a new check for updates, go to Windows Update and pause updates. Then resume updates and it will perform a fresh check for the latest updates.
 

My Computers My Computers

System One System Two Other systems

  • 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.

My Computer My Computer

At a glance

Windows 11Intel Core i9-9900KF64GbNVIDIA GeForce GTX 1660
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Custom build
CPU
Intel Core i9-9900KF
Motherboard
Gigabyte B360M-D3H
Memory
64Gb
Graphics Card(s)
NVIDIA GeForce GTX 1660
Monitor(s) Displays
2 x LG L246WHX
Screen Resolution
1920x1200
Bree said:
Welcome to Eleven Forum.

Your system should no longer be trying to install the update for 26120.770 (KB5039314), this has been superseded by 26120.961.

www.elevenforum.com

KB5038575 Windows 11 Insider Dev build 26120.961 (24H2) - June 14

UPDATE 7/15: https://www.elevenforum.com/t/kb5038603-windows-11-insider-dev-build-26120-1252-24h2-july-15.26817/ Windows Blogs: UPDATE 6/30: We have temporarily paused the enablement of these features to investigate a few issues reported by Windows Insiders. We plan to begin the enablement...
www.elevenforum.com www.elevenforum.com

To force a new check for updates, go to Windows Update and pause updates. Then resume updates and it will perform a fresh check for the latest updates.
Click to expand...

This did indeed force a recheck for updates, but now it's decided that I am up to date even though my system is still on build 26120.751. I'm happy with that for now, we'll see what happens on the next update.
 

My Computer My Computer

At a glance

Windows 11Intel Core i9-9900KF64GbNVIDIA GeForce GTX 1660
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Custom build
CPU
Intel Core i9-9900KF
Motherboard
Gigabyte B360M-D3H
Memory
64Gb
Graphics Card(s)
NVIDIA GeForce GTX 1660
Monitor(s) Displays
2 x LG L246WHX
Screen Resolution
1920x1200
Jayce53 said:
This did indeed force a recheck for updates, but now it's decided that I am up to date even though my system is still on build 26120.751. I'm happy with that for now, we'll see what happens on the next update.
Click to expand...


The update Windows is now trying to install has advanced to 10.0.26120.961 however the symptoms are exactly the same with this update.
 

My Computer My Computer

At a glance

Windows 11Intel Core i9-9900KF64GbNVIDIA GeForce GTX 1660
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Custom build
CPU
Intel Core i9-9900KF
Motherboard
Gigabyte B360M-D3H
Memory
64Gb
Graphics Card(s)
NVIDIA GeForce GTX 1660
Monitor(s) Displays
2 x LG L246WHX
Screen Resolution
1920x1200
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