My winxp has been locked by microsoft, :-<

[BiMode]

So 640 Corp keys come to work again?

[c4p0ne]

So you're telling me that by inputting that corp key AFTER the installation and subsiquent lockout by SP2 on your system, windows didn't require activation anymore? Are you sure the built in Grace period simply just hasn't been reset? Are you getting the "** days left for activation" messages or are you "fully activated" now?

Furthermore, are you able to do windows updates now?

What I know, the VLK version didn't need any activation methode.
But, when the "known" ID is detected, Windows just act weird and need to be activated, again. The easy way is to change the serial #. What Peter[Pan] told is the way to change it with the proper key.

[peleon]

I tried a little program called "Win XP Activator Crack" that makes Windows believe that it's activated. It worked!

I was also able to update. Dont know about the efficiency of this crack.

Regards

[azsd]

be careful use "640" serials

[gabri3l]

Yes for SP2 you need a 640 PID. In SP1, Windows XP will fail to install on installations of Windows with one of the following product IDs: XXXXX-640-0000356-23XXX and XXXXX-640-2001765-23XXX and the corporate version beginning with FCKGW. Now it looks like any keys without a 640 PID will fail. Using MSkey4in1 (google) you can easily generate a 640 PID. But when using or generating a 640 key make sure you don't fall into the already banned SP1 range.

[MaRKuS-DJM]

what about XXXXX-642-0645805-XXXXX product ids?
my key begins with YVGKQ. seems to work