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 ...