I doubt it very much. What type if VirusScan is this, Enterprise or the home version?
Also is your taskbar icon shield-shaped or square? You are posting under community help when it would be best to post a new thread under the actual version of VirusScan that you are using.
VirusScan Enterprise: http://community.mcafee.com/community/business/system/vse
Total Protection Service (for small business): http://community.mcafee.com/community/business/system/tops
It's virusscan Enterprise version 8.0.0.
VSE 8.0i is no longer supported, the advice is always to update to the latest version of the point product. In this case this is indeed VSE 8.7i Patch 3 (repost).
We use the VirusScan enterprise product (VSE) for 2000+ machines in our environment. I want to add that not only is VSE 8.0 out of support, but it also cannot be updated. The methodology used by McAfee to deliver virus definitions (DATs) has changed, and while McAfee was offering parallel delivery of DATs, both the old version updates and the new version updates, that time has passed, and only the new version of updates are being delivered now. VSE 8.0 can't use the new version of updates; you'll need VSE 8.5 or 8.7 to receive updates.
I'm not sure why you wanted to have the on-access scanner disabled after an update...I assume it's because you want to do on-demand scanning only. That policy enforcement is possible with ePO, assuming you have that in your environment. However, I you have VSE 8.0 installed, your updates are stale and getting older, and I think the whole question about whether the on-access scanner is enabled is becoming moot.