The thing about digital license linked to email was supposed to be about this. Using email to troubleshoot activation should've done it.
I had an extended email war with Micro$oft about this deactivation when I upgraded my BIOS and my activation died. I got no help from them.
I'm getting access denied when trying to export the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\{7746D80F-97E0-4E26-9543-26B41FC22F79}. Also access denied when trying to change permissions. I'm running a clean install on VM Virtualbox. Any workaround?
Success. Had to enter advanced settings where no owner was specified. Added owner and checked "replace all child object permissions with inheritable permissions from this object"
Too much unneded complications Just Deploy W7 on a native VHD (not VHDX), and add it to boot menu Remove remove the product key from w10 (slmgr /upk) and reinstall the generic product key (slmgr /ipk xxxxx-xxxxx-.....) Reboot on w7, activate it and use the gatherostate.exe from w10 media to generate the genuine ticket xml Still on w7 copy the ticket to \ProgramData\Microsoft\Windows\ClipSVC\GenuineTicket of W10 installation Reboot to W10 while connected to the internet Done W10 activated Time required, maybe 10 minutes on a decent machine on SSD. P.S. Obviosly then you can just delete the vhd, or you can keep it as a recovery OS.