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Mfemms.exe process takes 50% of Windows CPU resources

APPLIES TO:
  • Parallels Desktop 10 for Mac Home Edition
  • Parallels Desktop 9 for Mac Standard Edition

Symptoms

  • Windows virtual machine is very slow.
  • Fan runs at high speed.
  • Mfemms.exe process takes almost 50% of CPU resources:

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Cause

McAfee antivirus is run.

The mfemms.exe process may also be started if you have already uninstalled McAfee software from your Windows. You may check it by locating the McAfee folder under C:\Program Files\Common Files.

Resolution

Please remove all information about McAfee antivirus from the virtual machine:

  1. Download McAfee Removal Tool.
  2. Launch it and proceed through the Wizard.
  3. Reboot Windows. It should work much faster.



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