Am gasit pana la urma...pun si aici ca poate mai intalneste careva problema:

se da start->run->gpedit.msc

Se deschide fereastra de policies  se alege windows settings=>security settings=> Local policies->security options si se pune disabled la :
Domain member: Digitally encrypt or sign secure channel data
Domain member: Digitally encrypt secure channel data (when possible)
Domain member:Digitally.....etc...
Se da restart la calc
si dupa aia poti sa adaugi