product activation after installing sp2

[Guest]

I installed sp2 from MSDN CD. After reboot, I get a Windows Product
Activation error:

A problem is preventing Windows from acccurately checking the license of
this computer. Error Code: 0x80004005

Same thing no matter who logins, same error in safe mode. This is a Xp Pro
pc used at home only. No network.

TIA
Mike

 

[Guest]

Mike,
I have used "Method 2" before and it worked for me.
http://support.microsoft.com/?kbid=306081

Hope this Helps!