VirtualBox, Windows & You (or, in this case – me)

While moving some VMs from VirtualBox between boxes earlier, I recieved a “STOP Error 0xc0000225” when trying to re-power them, this was occurring in both Windows 7 & 8 virtual machines & I started to put it down to moving from VirtualBox 4.0 to 4.2 in one go.

Turns out of course, it can be fixed by disabling, saving, then re-enabling (as you never turn IO APIC off after installing Windows) the “IO APIC” settings option in the System / Motherboard tab for each particular VM you’re having issues with.

… and this post is here to ensure I never forget about that again :)