Fix Error 80240020 When Installing Windows 10 Free Upgrade
So you tried the force upgrade method for downloading Windows 10 free upgrade? It worked well for downloading, but once download was finished, you were dreaded with error 80240020 in Windows Update? Here’s how to fix this.
Turns out, because of overloaded Microsoft servers, the installation files downloaded on your computer were either incomplete or corrupt.
Here’s what you need to do to fix error 80240020 when installing Windows 10 free upgrade:
Step 1: Navigate to C:\$Windows.~BT folder (make sure Hidden items are checked) and try to delete as many files and folders as possible. You will probably not be able to delete everything inside this folder due to permissions issue, but even deleting some of the files will do the job.
Step 2: Now head to C:\Windows\SoftwareDistribution\Download and here delete everything.
It should work now. Like mentioned above, since Microsoft servers are overloaded right now, you may encounter 80240020 error again. If so, try the above steps again. Keep trying until it works. That’s unfortunately how it is right now.