defender installations

[Guest]

i tried to install windows defender on a windows xp professional and got an
error massage that my windows is a vlk version, I purchase a new windows xp
sw but I do not want to install it from scratch so I change the key according
to Microsoft site instructions, the windows accept the new key but the
defender still give the same error,
Please advice
elhanan

 

[Bill Sanderson]

That sounds as though you did the right things, but there can be limitations
to what key can replace what original key, I suspect.

I would try going through the process here:

http://www.microsoft.com/genuine/diag/

to see if it helps in any way. If it does not, I'd recommend a repair
install, as described here:

http://support.microsoft.com/?kbid=315341

Under most circumstances, such a repair install is pretty benign--you'll
have some trouble telling that you'd done it afterwards--i.e. you don't need
to reinstall applications.

However, there are some circumstances, which mostly relate to OEM
installations, where data loss is possible--read the article and the linked
articles as they apply, carefully.