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Windows 11 upgrade error 0xC1900101: driver checks

Quick Answer

Troubleshoot 0xC1900101 during a Windows 11 upgrade by checking device drivers and setup logs before retrying.

Troubleshoot 0xC1900101 during a Windows 11 upgrade by checking device drivers and setup logs before retrying.

By FlyOOBE Software Editorial TeamUpdated 2026-10-28

Step-by-step checks

  1. Disconnect nonessential USB devices and remove external storage before attempting another upgrade.
  2. Open Device Manager and check for warning icons; update problematic storage, Wi-Fi, and chipset drivers from the device manufacturer.
  3. Review SetupDiag output and Windows Setup log files to identify the failing driver rather than guessing.
  4. Temporarily remove incompatible third-party driver utilities only after making a recovery point.
  5. Retry an in-place upgrade with a verified Windows ISO and adequate free space.

When to stop or reconsider

If rollback repeats, preserve the SetupDiag report and logs instead of repeatedly reinstalling drivers at random.

Related guides

Sources and verification

Confirm version-specific behavior using Microsoft documentation and hardware vendor support instructions. Do not assume that unsupported Windows installations receive guaranteed servicing.