Bluerain
New member
Re: Windows 10 Update Failed Error C1900101
Try doing a disk check upon booting then run defrag. It worked for me .
I tried this, it didn't work. There are no other patches/fixes that need to be installed from Windows Update. I also disabled my antivirus and cleaned out old files, temp directories, and any suspect programs that may cause problems with compatibility.
The install from the download tool gets to "Copying Files 85%" (25% of the total install) then the laptop just reboots and Windows restores back to Windows 7. The error is one from my post mentioned above. The odd thing is that if attempt the install from Windows Update, it also fails, but leaving error message 80240020. The 80240020 error might be MS's default error when prompting to install W10 before the system says it's actually "ready." I'll keep trying and find out what works....
Try doing a disk check upon booting then run defrag. It worked for me .