ok so i installed xp using a vlk xp with sp2. in rest nothing slipstreamed or removed. then installed wmp10 just downloaded from m$. start wmp and click update button. it did not report any updates. then closed wmp and i just restarted wmp . click update buuton and update found. so i dont think is registry settings or other stuff. i did not use wmp slipstreamer or anything else. i said is ONLY from microsoft.