Hi Russ,
I hope you have a great day ahead,
I would recommend the solutions as below according to your provided error code:
Solution 1: Change the service status from manually to automatic:
- Open the search bar type “services.msc”, and right click "Run as Administrator".
- In the Services window, double-click Background Intelligent service from the list.
- From the Startup type field, select Automatic from its drop-down menu.
- Go to the “Service status” and click on Start.
- Then, click Apply and OK to save the changes.
- Next, do the same operations with Windows update and Cryptographic Services.
- Once done, restart your PC and check if you fixed the 0x800f0991 update error successfully.
Solution 2: Reset the Windows Update component by CMD and rename the SoftwareDistribution folder
1.Search for "Command Prompt" in the Start menu, right-click it, and select "Run as administrator"
2.Type and enter each cmd separately:
- net stop wuauserv
- net stop cryptSvc
- net stop bits
- net stop msiserver
- Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- net start wuauserv
- net start cryptSvc
- net start bits
- net start msiserver
3.Once done, restart your PC and check if you fixed the 0x800f0991 update error successfully.
Solution 3: Using DISM command to fix corrupted files:
1.Search for "Powershell" in the Start menu, right-click it, and select "Run as administrator"
2.Type and enter each cmd separately and waiting for each command complete 100% or failed with error code:
sfc/scannow
DISM /Online /Cleanup-Image /RestoreHealth
If the above cmd is failed with error code:
Finding the machine has been successfully updated as a source to repair corruptions file.
DISM /Online /Cleanup-Image /RestoreHealth /source:[DRIVE]:\sources\sxs /limitaccess
DISM /Online /Cleanup-Image /startcomponentcleanup
3.Once done, restart your PC and check if you fixed the 0x800f0991 update error successfully.
Solution 4: Manually Download and Install the Update:
- I would recommend to consider downloading the update package manually from the Microsoft Update Catalog.
Please note that you should download the correct version matching your system architecture.
https://www.catalog.update.microsoft.com/Search.aspx?q=KB5062553
2.Double click the downloaded package and check if you fixed the 0x800f0991 update error successfully.
If my response was helpful and successfully addressed your issue, I would sincerely appreciate it if you could take a moment to upvote it. Thank you for your time and consideration.
Kind Regards,