Error code 0x800f0831 in Windows update
Run Windows Update Troubleshooter:
Windows has a built-in troubleshooter that can help diagnose and fix common update-related issues. To run Windows Update Troubleshooter, follow these given steps:
1. Press to Windows Key + I tab to open Settings app.
2. Go to Update & Security > Troubleshoot.
3. Click on “Additional troubleshooters.”
4. Find and run the “Windows Update” troubleshooter.
5. Check your system for malware: Malware can interfere with the update process.