Forum Discussion
Windows 11 Install - Boot Errors
I've had a heck of a time trying to update my machine. Had to convert my partition from MBR to GPT to enable Secure Boot... once I did that, I got all green checkmarks on the PC Health Check app.
An update message never popped up, so I decided to attempt the USB ISO route. Formatted it to NTFS, downloaded the ISO, ran setup. Made sure the only thing plugged into the computer is the USB, keyboard, and mouse.
Partway through the many resets, I saw a message about a STOP_CODE (didn't get the entire thing.) Once everything booted back into Windows 10 Pro, the Setup window displayed the following error:
"0xC1900101 - 0x40017
The installation failed in the SECOND_BOOT phase with an error during BOOT operation"
I went to the WINDOWS\Panther folder and pulled the following from the setuperr.log:
SP SPDisableRollback: BCD failed to set new OS boot entry as default. Error: 0x00000002
SP SPDisableRollback: Failed to delete the boot status policy for the new OS. Error: 2
SP SPDisableRollback: BCD failed to remove the downlevel OS current boot entry. Error: 0x00000002
SP Failed to disable rollback
SppDeleteSnapshots failed. hr = 0x800401f0
Failed to delete C:\windows.old\Windows\System32\oobe\SetupPlatform\SetupPlatform.dll. hr = 0x80070005
Can anyone suggest a path forward? I've tried to search on the above errors, and most of the BCD stuff I'm seeing seems to be related to other issues. Also, doing a clean install is not a viable option at this time (too many files in too many places... I laugh at the idea of a OneDrive backup.)
Thank you!
2 Replies
Your errors point to BCD, permission, and file system issues that are common in failed upgrades. Rebuilding the BCD, repairing system files, and ensuring hardware compatibility often resolve these problems. If these steps seem daunting, consider engaging a professional or creating a full backup with a reliable tool (e.g., Macrium Reflect) before attempting further repairs.
Thank you for the tips! I've cloned my SSD so I have a full backup if any attempted repairs should go wrong. There have been instances where DISM or SFC /scannnow have discovered and repaired system files in between attempted upgrades - but not always (which is odd to me... I would expect the same files to be corrupted after each attempt.)
I'll look into rebuilding the BCD.
Would you have any tips for diagnosing hardware compatibility issues? How would I be able to discern if some hardware is giving me problems? I recently updated all drivers to try and address that issue.
