My winxp has been locked by microsoft, :-<

[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

[gabri3l]

I have heard some people installing with a 642 and 648, Some keys fall in that range. But here is the basis of the keys. (I am using someone elses explanation) If you use pirated or legit xp pro vlks check your product ID and your xp product code will look something like this: 55274-64X-XXXXXXX-XXXXX. Look at the ID as this: AAAAA-BBB-CCCCCCC-DDEEE. A is the product code. BBB is a significant number to the private key. C is the least significant of the private key. DD is the private algorithm key used to verify the 25 digit key. EEE is a random digit that changes each install, this is how activation remains random. BBB-CCCCCCC is your hidden product id, which will be within the above stated range if you use a legit microsoft created key. So some xp keys in the 64x range work just out of random luck but if you do not own a legit XP, the safest bet is to look for MSkey4in1 and gen a new 640 key.

Edit: It seems that issued keys from MS are 640-0005xxx to 640-0006xxx so when using MSkey to gen a key choose Windows XP Pro VLK and set the range as 640-500 to 640-600.