I have no antivirus as self deactivated because of 'system clock set forward or updates are disabled'. Neither of which are true

Please help


OS Windows XP
ZA Internet Security Suite v9.1.008.000
AV/AS engine version 8.0.2.42, DAT version 1026655680
Anti spam 6.0.0.2383

Problem just started today

Programme has worked fine for many months