NIS account says good computer says expired

nis 22.5.5.15, win7, computer reset time and date to jan 1 2002. nis displayed : your computer protection has expired. renew now. Have coverage for 3 pcs. Other 2 are fine. Norton account says all 3 are good. I reset time and date still won`t work.  Clicked on renew says it can`t connect to norton server. All other programs seem to work fine.