I have Exchange 2003 (sp1) on Win 2003(no sp1) with Groupshield 5.20. Until two days ago, Groupshield updated daily without issue. At dat 4473, I started getting 'couldn't update drivers, the AV engine couldn't be stopped" when trying to update the Groupshield dats. The current dat is 4475 and groupshield is still at 4473. I have stopped and started the GS & EXch services and rebooted the server. Nothing to report in EV. Still can't update the groupshield dats. Mcafee VirusScan Enterprise v8.01 on the server updates just fine. Help.