Issue: How to fix KB5012599 failed to install on Windows?
Hello. I have been trying to install the Windows 10 update KB5012599 but it fails every time. I receive an error code 0x800f0831. What should I do?
The 0x800f0831 error code was reported to appear after trying to install the KB5012599 Windows 10 update. People that experience the issue say that the update package downloads successfully but the installation process fails and produces an error message. Microsoft releases important feature updates and security patches so an update error is a problem that needs to be fixed.
The KB5012599 package is said to make quality improvements to the servicing stack. It can fail to install for a number of reasons. Most of the time, the error is caused by system file corruption, malfunctioning Windows update components, or the SoftwareDistribution folder. Usually, the updating process can be restored by running a built-in update troubleshooter or resetting the update components.
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Solution 1. Run the Update Troubleshooter
- Press the Windows + X keys and go to Settings
- Go to Update and Security
- Click Troubleshooter
- Select Additional troubleshooters
- Run the Update troubleshooter
Solution 2. Repair Corrupted System Files
Use Command Prompt commands to repair system file corruption:
- Open Command Prompt as administrator
- Use the following command and press Enter:
- Reboot your system
- If SFC returned an error, then use the following command lines, pressing Enter after each:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Solution 3. Reset Windows Update Components
- Open Command Prompt as administrator again
- Copy and paste the following commands, pressing Enter after each:
net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc
Del “%ALLUSERSPROFILE%\\Application Data\\Microsoft\\Network\\Downloader\\*.*”
rmdir %systemroot%\\SoftwareDistribution /S /Q
rmdir %systemroot%\\system32\\catroot2 /S /Q
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
netsh winsock reset
netsh winsock reset proxy
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc
- Restart your PC
Solution 4. Delete the SoftwareDistribution Folder
- Search the taskbar for C:\\Windows\\SoftwareDistribution
- Select all the files inside the folder and deleted them
Solution 5. Update via Media Creation Tool
- Download Windows 10 installation media from the official Microsoft website
- Open the tool once it installed
- Agree to license terms
- Choose Upgrade this PC now
- Wait for the update to be installed
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