Arrgh, the machine I run 2008 RC0 on has suddenly decided to throw up this error message for no apparent reason, has been runing fine since october, now for some reason my key is not valid, any ideas?

Any significant hardware modifications made e.g. RAM memory added, NIC change, CPU, etc. Did you try to reactivate WS08? Was an upgrade performed from RC0 to RC1? rgds,

If you installed service pack 1 beta. uninstall it. Three hours on ms with no help,my evaulation copy of sp1 expired,with vista.

Yes, it's true.Don't install SP1 for Vista!I've activated Vista before installing SP1, after my Vista has been locked.Tried to activate via Internet and many times via Phone without any result.Lost couple of hours speaking with ms techs and hp techs and nobody nothing knows what's wrong.