xtrap block windows xp today

xtrap block windows xp today
lol its really funny dont block hackers and block windows xp
error code 541 on all windows xp machines today
i try 7 computers with windows xp all got error 541
i try 2 computers with windows 7 and windows 8 and work fine

*** solved ***

we just need to update the root certificates for windows xp
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/rootsupd.exe
now cf on windows xp work again