Failing Windows 11 update KB5063060: error 0x800705b9

Hello, Mark.

Thank you for reaching out to the Microsoft Q&A!

It seems the installation error you encountered indicates corrupted or incomplete system/update files. There can be multiple fixes for this. The first step can involve:

1. Stopping Windows Update services, use: net stop wuauserv & net stop bits, which stops the Windows Update service and the Background Intelligent Transfer Service.
2. Clear these two directories in SoftwareDistribution, use: del %windir%\SoftwareDistribution\Download\* & del %windir%\SoftwareDistribution\DataStore\* or cd %windir%\SoftwareDistribution\ & del .\Download\* & del .\DataStore\* (An ampersand is used as a second or additional command to be executed in one line. You can separate these commands if you wish.)
3. Restart the Update services again, using: sc start bits & sc start wuauserv or net start bits & net start wuauserv
4. Attempt to install the update again.

If this does not fix the issue, you can also attempt to run the Windows Update and BITS troubleshooter at Settings > System > Troubleshoot > Other Troubleshooters, which can identify the recurring problem.

If the troubleshooter cannot repair your installation error, here are some other steps you can take:

• Scan for corrupted system files, using: sfc /scannow And restart afterwards. Another method is using DISM.exe /Online /Cleanup-Image /ScanHealth - If problems are found, use DISM.exe /Online /Cleanup-Image /RestoreHealth and restart to clean leftover files or fragments.
• Referring to a System Restore Point, which, if available, can be found at Control Panel > System and Security > Backup and Restore (Windows 7) , or press ⊞ + R and enter sysdm.cpl. This will open System Properties, and find the System Protection tab. If a System Restore Point is found, you should see that the System Restore... button under System Restore should be available.
• While uncommon, tight resources can also cause the error to occur. You can scan for disk space by searching for Disk Cleanup in the Start Menu or pressing ⊞ + R and entering cleanmgr which will bring you to a GUI where you can clean up your disk space.

If I could help, let me know by telling me! If you encountered any issues while performing the actions listed above, let me know! Thank you for reading, and I wish you the best of luck with installing the update.

Sorry for the late response.
It appears that the DISM progress has frozen at 62.3%. Before retrying the command DISM.exe /Online /Cleanup-Image /RestoreHealth, you can also try this snippet: DISM.exe /Online /Cleanup-Image /StartComponentCleanup, which will clean the components of your system if a repair is found for corrupted files.

As for the frozen progress bar, it can still progress. However, as said, it can also be due to the limited system resources needed to progress with the update. As for the error code 0x800f0983, it indicates there may be an issue with the servicing stack or cumulative update package. This can happen due to corrupted or missing components in the update cache (the cache is usually located in SoftwareDistribution, but rarely C:\Windows\System32\catroot2 , C:\Windows\Installer, or C:\Users\[your user]\Appdata\Local\Temp), which helps Windows prepare for installation.

In extreme measures, you can install a Windows 11 ISO or insert bootable media to repair the system corresponding to your current version (for example, the latest is 24H2), which can be found at Download Windows 11, using the Installation Assistant, or even using the quick reinstall tool, found in Settings > System > Recovery > 'Fix problems using Windows Update', which will be followed by a Reinstall Now button. However, it is not a clean reinstall, but it will perform an in-place reinstall that preserves your files while reinstalling the current version of Windows on the system. To fix using a fresh ISO as a repair source, enter the command in Command Prompt (as an Administrator) DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:D:\Sources\install.wim /LimitAccess (Replace the Source path with the path to the Install.wim file of the mounted ISO)

For a log that informs you on the Windows Component Store, monitor the log file, C:\Windows\Logs\CBS\CBS.log, by reading some of the contents or getting the content using this PowerShell command:
Get-Content -Path "C:\Windows\Logs\CBS\CBS.log" -Wait -Tail 10, which returns the first ten lines to start with, providing enough information to see what is going on behind the scenes.

For other fixes, you can refer to this Microsoft Learn article for technical users and this article for home users.