So this version I’m using is not up to date?
Version 5.1
(build 2600.xpsp.sp3.gdr - - - -numbers - - -service pack 3)
Jack Sparrow sold it to me.
That wouldn’t say anything about your patches post SP3.

There are 2 ways to find if your OS is patched:

Do a scan at Microsoft update (custom / express)..

Or use PSI by secunia.com..

Using pirated / cracked version of AV / OS gives you no protection at all.. It is actually the stupidest thing to do..