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System Hang or High CPU Utilization with McAfee 4102 DAT files and VirusScan Tue - Sep 2, 2003

Posted by supriyatna in All, Windows.
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Solution: System Hangs or high CPU Utilization with 4102 DAT files
NAI has received reports system hangs or high CPU utilization after updating to the 4102 DAT files.

The hang has been reported – but not entirely confirmed – with many different engines. Currently NAI has been able to only reproduce the problem on the 4.0.02 engine. As stated there have been reports with other engines, but they turned out to be situations where the 4.0.02 engine was actually still being used.

While this was only determined to be an issue with the 4.0.02 engine, the 4103 DAT files have been released and should resolve this issue. They can be downloaded by visiting http://www.nai.com/naicommon/download/dats/find.asp.

Since the older scan engine does not protect as well as the updated scan engine, all customers are urged to update their scan engines by downloading and executing the latest SuperDAT file located at http://www.nai.com/naicommon/download/dats/find.asp.

To stop the high CPU utilization on NT systems, follow these steps.

  1. CTRL-ALT- Delete and select Task Manager. This will be very slow but will come up eventually.
  2. Select File, then New Task
  3. Type CMD.EXE, and then and Command Prompt Console
  4. Type NET STOP MCSHIELD
  5. Download and execute the SuperDAT
  6. Restart the system to enable VirusScan

On Windows 9x systems that are hanging, follow these steps:

  1. Boot into safe mode
  2. Select Start, Programs, McAfee VirusScan and choose McAfee VirusScan Scheduler
  3. Highlight the McAfee VShield task and from the Task menu choose Properties
  4. Click the configure button and remove the check-mark from the Enable System scan box
  5. Click Ok to save the change, Ok to close the task properties window and close the VirusScan Scheduler
  6. Boot into normal mode
  7. Download and execute the SuperDAT file
  8. Select Start, Programs, McAfee VirusScan and choose McAfee VirusScan Scheduler
  9. Highlight the McAfee VShield task and from the Task menu choose Properties
  10. Click the configure button and place a check-mark in the Enable System scan box
  11. Click Ok and then click the Yes button when asked to load VShield
  12. Click ok to close the task properties window and close the VirusScan Scheduler

To get the latest Engine and SuperDat you can go directly to ftp://ftp.nai.com/pub/antivirus/datfiles/4.x/

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