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Unable to find the parallels driver for usb devices error message

APPLIES TO:
  • Parallels Desktop 9 for Mac Standard Edition
  • Parallels Desktop 8 for Mac Standard Edition
  • Parallels Desktop 7 for Mac Standard Edition

Symptoms

On Parallels virtual  machine start you can see the following error message:

Unable to find the parallels driver for USB devices



Cause

Parallels .kexts can not be loaded because of wrong Mac permissions.

Resolution

1. Open Terminal.app on your Mac (Applications/Utilities/Terminal)

2. Paste the command as is into Terminal and hit return (you will be prompted to put your Mac password):

sudo chown root:admin /

3. Once you have run this command - restart your Mac




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