This happens if the Microsoft servers haven't registered the deactivation of the old PC. Wait 24 hours, or use the "Troubleshoot" option in Activation settings to force the transfer. Hardware ID Mismatch
You can try, but Microsoft’s servers will likely reject it. Workarounds (none guaranteed): windows license transfer
Microsoft allows minor hardware changes (RAM, GPU, storage) without triggering deactivation. But changing the motherboard always changes the hash significantly enough to require re-activation—and for OEM licenses, that re-activation is denied. This happens if the Microsoft servers haven't registered
Go to > Update & Security (or System ) > Activation . Microsoft uses three main systems to tie a
Microsoft uses three main systems to tie a license to hardware:
The ability to transfer a Windows license depends entirely on the license type currently installed on your device. Step 1: Verify Your License Type Before attempting a transfer, you must determine if your license is legally allowed to move to new hardware. Retail (Full Version) : These are purchased separately from a PC (e.g., from Microsoft or a store like Best Buy