Mcafee has a problem with the DAT updates. What happens is the DAT update is 3 main files -- SCAN.DAT, NAMES.DAT & CLEAN.DAT -- and sometimes during the DAT upgrade, you don't get all 3 files updated. That causes problems, where the DATs will not update correctly.
What you can do is stop VirusScan and all other Mcafee (Network Associates, technically) services (McShield, AvSynMgr) and set them to NOT run automatically.
After that, reboot.
When the machine comes up, you are asked if you want to start Mcafee. Say NO.
Now, go to:
ftp://ftp.nai.com/pub/antivirus/datfiles/4.x/
and download the latest DAT-####.ZIP file
This is the file that contains the 3 DAT files.
Now, open up My Computer and go to c:\program files\network associates\virusscan
Next, open the ZIP file you downloaded.
Unzip the contents of the file and put them in the Explorer window (where all the Mcafee stuff is installed).
REboot again.
When the system starts up and you are asked to start Mcafee, say YES.
Mcafee should start up properly.
If you then check the DAT version, you should have the version you unzipped and manually put in the directory.
Now, what you will want to do, after this is straightened out, is go to back to the FTP site and download SDAT####.EXE and run that on your system.
That is the SuperDAT, which contains the Mcafee engine upgrade to the latest engine. It will also try and upgrade your DAT files to the latest version, but you would have already done that.
Afterall this, set Mcafee to start Automatically again, like it was.
hope this helps
