Upgrading to Windows 11 Failing?

Thomas VD 0 Reputation points
2025-10-01T09:39:38.9533333+00:00

I have been trying repeatedly to upgrade my computer to Windows 11 before the deadline and nothing is working.

So far I've tried:

  • clearing the update cache
  • running scans/troubleshooter -- doesn't show any issues here
  • updated drivers for processor, graphics and BIOS
  • changing various settings that I've seen suggested as possible fixes
  • installing update via settings, the Windows 11 Installation Assistant, and ISO
  • The only error message I've received was after the ISO install and it was "0xC1900101 - 0x20017: Installation failed in the SAFE_OS phase with an error during BOOT operation"

I definitely have enough storage, everything seems to suggest that my computer SHOULD be compatible, but I have no idea what else to try from here and I don't know what I'm going to do if I can't get this to work.

Windows for home | Windows 11 | Windows update
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3 answers

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  1. S.Sengupta 27,391 Reputation points MVP
    2025-10-01T10:12:21.63+00:00

    Kindly check here:

    setuperr.log and setupact.log

    C:$WINDOWS.~BT\Sources\Panther\

    Open them with Notepad.

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  2. Ramesh Srinivasan 67,935 Reputation points Independent Advisor
    2025-10-01T10:14:11.8633333+00:00

    Hi Thomas,

    Please share your Farbar scan logs for analysis.

    • Download Farbar Recovery Scan Tool 64-bit FRST64.exe
    • If the OS language is not English, rename FRST64.exe to FRST64English.exe.
    • Run the program. Don't check or uncheck any options. Click "Scan".
    • Add the two logs, FRST.txt and Addition.txt, to a zip archive.
    • Share the zip file on OneDrive or GoFile.io, and post the link here.

    Note: If Microsoft Edge or Chrome mislabels the Farbar Scanner executable as PUA/malware, choose to keep it by tapping … in the bottom bar, choosing Keep, and then choosing Keep anyway in the dialog that appears. See this screenshot. It's a safe tool used in most antimalware forums.



  3. Ramesh Srinivasan 67,935 Reputation points Independent Advisor
    2025-10-01T16:51:27.2466667+00:00

    Please backup the registry using Acelogix Regbak.

    Once done, post back so that I can share a fixlist to remove outdated drivers.

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