Forum Discussion
StevenM1
Nov 09, 2025Copper Contributor
Problems with Win 11 install from Win 10 22h2, error 0x800700B7
I've been trying to upgrade from Win 10 pro to Win 11 pro with purchased software. I keep getting this error message, error 0x800700B7 -0x 1000A "The installation failed in the DOWNLEVEL phase with ...
Houellebecq
Nov 11, 2025Iron Contributor
Since you've already tried several troubleshooting steps and software repairs, a clean install via the Media Creation Tool might be the most effective route.