I'm currently facing the issue that I can't restore the my previous installation of Windows. I did the following things:
- Try to "repair-install" Windows on top of Windows using the Media Creation Tool due to a few oddities I noticed. This failed due to the error "An unknown command-line option [/DynamicUpdate] was specified".
- Made an ISO using the Media Creation Tool and used that to "repair-install" Windows, or so I thought - apparently, doing it this way removes all your data and apps... (this is where it all started)
- Tried to go back to the previous version using the Settings app - no luck here, as the button was simply missing
- Made a image of the hard drive just so I can't mess up any more things
- Copy the contents of the Windows.old folder manually to their previous place (using robocopy to ensure that all attributes and permissions were copied properly) - This mostly worked, as in I got back into Windows and the data were where they should be, but I couldn't start most UWP apps or the start menu, so something must've gone wrong. (It is possible that I forgot to delete a folder before copying the old versions, but I didn't try this again)
- Convert the drive to GPT (previously MBR) - this was done because I noticed a few minor issues trying to boot in UEFI mode during the previous steps
- Reinstall Windows using a newly created installer USB stick
- Copy the Windows.old folder from the drive image onto the drive (again using robocopy)
- Try to roll back using the recovery mode of the installer USB - this fails with the error "We ran into a problem and won't be able to take you back to the previous version of Windows. Try resetting your PC instead" (which I obviously don't want to/already did) - there's no error code
- Rolling back from within Windows is still not possible
Any suggestions on how I could fix the problem? Where does the "We ran into a problem..." error come from?