Error 0xC1900101 – 0x20017, Windows 10 22H2 upgrade installation failed in the SAFE_OS phase with an error during BOOT Operation.

Error 0xC1900101 – 0x20017, Windows 10 22H2 upgrade installation failed in the SAFE_OS phase with an error during BOOT Operation. The error was thrown while upgrading win 10 version 1809 – OS Build 17763.1817 to 22H2 using the Windows 10 Update Assistant.

The error 0xC1900101 – 0x20017 typically occurs during Windows installation or upgrade and indicates a failure in the SAFE_OS phase with an error during boot operation. Here are some steps to resolve this issue:

1. Disconnect external devices:
   Remove all unnecessary external devices, leaving only the disk with Windows installed, mouse, and keyboard.
2. Run System File Checker:
   Open Command Prompt as administrator and run sfc /scannow 2-3 times.
3. Update or rollback drivers:
   This error is often caused by incompatible drivers. Update all drivers to compatible versions or roll back recently updated ones.
4. Perform a clean boot:
   Start Windows with a minimal set of drivers and startup programs.
5. Check for disk errors:
   Run chkdsk /f /r in Command Prompt as administrator and restart your computer.
6. Use DISM tool:
   Run the following commands in Command Prompt as administrator:

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

7. Disable wireless and Bluetooth in BIOS:
   Some users reported success after disabling these in BIOS settings.
8. Clear Windows Update cache:
   Delete all files in the C:\Windows\SoftwareDistribution\Download folder

If these steps don’t resolve the issue, you may need to investigate further using the setup log files located in %windir%\Panther, specifically setupact.log and setuperr.log.