[Qemu-discuss] windows 7 guest deactivated after qemu update from 2.0.0 to 2.3.0

[Stefan Treuheit]

after upgradeing my qemu installation from 2.0.0 to 2.3.0 my windows 7 
guest installation bacame deactivated. If I run the same disk image with 
the same parameters in qemu 2.0.0 again windows 7 is still activated. 
Are there any changes in hardware presented to the guest between qemu 
versions? The only difference I can see in windows hardware manager is 
the CPU name. It contains the quemu version number. I tried to use 
another type of cpu (-cpu kvm64) windows 7 is still deactivated (in qemu 
2.0.0). I tried other versions of qemu too. The only way to have an 
activated windows 7 is to run it in qemu 2.0.0. It's important to know 
that I used qemu 2.0.0 when activating the installation with an unused 
OEM key. There must be a difference in hardware seen by windows 7. What 
hardware cold that be?