I have been having dual boot Windows 10 + Ubuntu 20.04 for a few months, and (almost) everything has gone ok, except for one thing: Windows Update does not work anymore.
I'm stuck at version 1809, and some apps are starting not to work anymore (such as Adobe Bridge which requires 1903+).
Inside Windows Update, I get this error: There were problems installing some updates, but we'll try again later.
So I tried with restoring the image (DISM /Online /Cleanup-Image /RestoreHealth in the terminal), but I get The source files could be found as a response.
Then I followed every single method this guide (StartComponentCleanup, AnalyzeComponentStore, Install.esd, LocalSourcePath in regedit...) and no one succeeded.
After that, I tried to download the official Media Creation Tool for Windows 10 (windows installer) from here, and used it to manually update the system.
I got the following error: We're having trouble determining if your PC can run Windows 10, and following this answer I freed up some space on my pc, but that didn't work either.
I hope that updating Windows to the last version (currently 1909) would help to solve the "Corrupted Image" problem, which would solve the issue for any future updates, but I cannot manage to do so...
Any suggestions? I think that temporary disabling the GRUB and directly booting on Windows could somehow help, but I haven't been able to do so (Linux and Windows are on the same disk, so selecting it from BIOS always boots on the GRUB even if the partition with Windows is marked as active), and I'm always open for new ideas.