Hi Michael,
Some more testing on Hyper-v 2016 on-premise. I successfully installed x86_64 Core 144 Gen 1 VM 2 CPU 4Mo RAM from ISO. I backup and restore my i586 Core 144 config on the x86_64 Core 144. I used the scripts : https://wiki.ipfire.org/installation/arch-change to fix the Graphs problem. Then i used Pakfire to update to Core 151 with success. The only problem i have is i’m stuck at boot for 7mn Fresh installation stuck 8 minutes at boot. Even though i let the system boot, it is always stuck at “Setting up Pakfire Package Manager…” Core 144 had the same problem at boot. I saw you filed a Bugzilla post on this: https://bugzilla.ipfire.org/show_bug.cgi?id=12445 but i don’t know it Core 151 is supposed to have this fixed or not ? So i can confirm x86_64 Core 151 Gen 1 VM works fine with hyper-v 2016 / Gen 2 not for now (Frozen install at “Language selection”)