Using Windows Media Creation Tool 64 from here: Windows 10

Tried 4 times today to upgrade from Windows 7. The install gets to 30 something % and then crashes. Just says "something went wrong" but the update history says Error code C1900107

My PC computer is powerful enough to run Win10 and has enough disk space.

Any idea what Error code C1900107 means and how to solve it?

Thank you.