Unable to switch to Coherence mode

Asked By 10 points N/A Posted on -
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I am trying to switch from Full Screen to Coherence mode but I got an error. "Unable to switch to Coherence. The virtual machine display configuration could not be applied. Please try again or contact Parallels Support …" I am running OS X 10.6.5 and Parallels 6.0.11828. I hadn’t tried to switch to coherence mode for a long time but I was unable to. Please help.

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Best Answer by Amoyo Augustin
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Answered By 20 points N/A #126150

Unable to switch to Coherence mode

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  • In order to rectify your problem, please try to change the resolution of your computer.
  • If you face an error “An error occurred while switching to coherence. Please try again.
  • Please contact the Parallels support team for assistance in case the problem persists.”, while you are trying to roll back to the coherency view mode, try removing any anti-virus installed in your system.
  • In this case, the issue might be due to faulty video drivers.
  • You need to reset the Parallel Tools in your computer as the drivers for realistic devices are provided by Parallels Tool's case.
Answered By 15 points N/A #195033

Unable to switch to Coherence mode

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In instances when coherence is not working with multiple external monitors (especially using DisplayLink driver), here are the steps to solve the error:
 
1. In the Parallels Desktop, go to Menu > Preferences > USB tab.
2. In the "When a new USB device is detected:" select "Connect it to my Mac".
3. Delete any USB Devices that are listed under "Permanent Assignments:"
 
 
 
This should fix the problem encountered.
 

 

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