I'm insert in Windows 7 Ultimate Found error! Error: 0xC004F050 The Software Licensed Service reported that the product key is invalid
yep ultimate one blocked by MS, but it did change my OEM ID to X-OEM-X, so this one was working at some point
Well worked fine for me after i enter it said blah blah installed xxxx key with no issues , now have xxx-oem-xxxx in the activation What i mean is it accepts the key , but then you can't activate it online of course since it's blocked ;o
ok just tried the home premium key. it has been blocked from use by microsoft. my product id has been changed to one with -OEM-
This Key's are all "OEM:NONSLP" (Small OEM/Systembuilder-Key) !!! So the're useless for activating with "Cert"