I recently installed WinXP SP2 Home Edition on another computer, and I
had no trouble activating it.
So how many *concurrent* installation of the same license do you have
installed? How many installations does your license allow? Typically
its one computer per license.
Note: This is the second time I activated WinXP. Is there a limit to
how many times you can activate WinXP?
No limit but you may end up having to call Microsoft to reactivate.
After so many activations, the online process will fail and you have to
call the tech support phone number given at the end of the activation
wizard. You then talk to a Microsoft rep who will decide if you are
allowed another activation. How many online activations are allowed
before you get stuck with phone activations depends on the version and
edition of Windows and where you purchased it. However, you only asked
about activation, so whether it is online (automatic via the wizard) or
having to use a phone rep, nope, there is no limit as long as you can
reasonably prove you have a right to THAT license of their product and
haven't exceeded its threshold for the number of concurrent installs.
There may be an implied limit by date expiration. Windows XP extended
support ends 4/8/2014 (just 3 years away). Could be that phone support
(for activation) will cease when extended support ceases (unless they
continue it as a charged service). It's not likely that Microsoft will
release some update that will disable all of WGA and you no longer have
to activate their over 12-year operating system.
Microsoft Windows Genuine Advantage (WGA) Diagnostic Tool:
http://go.microsoft.com/fwlink/?linkid=52012
This spews out tons of data. I've never used it to bother investigating
what all of it means. There is also:
Genuine Microsft Software - Diagnostic Suite
http://www.microsoft.com/genuine/diag/
(you have to allow installation of ActiveX controls)
Again, never needed to use it. You can also visit the WGA forums at:
http://social.microsoft.com/Forums/en-US/category/genuine
PS, Remove "ine" from my email address
That should go in a signature (i.e., after the "-- \n" sigdash line).