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Unable to resume a Windows virtual machine suspended in Parallels Desktop 14 after downgrading Parallels Desktop

APPLIES TO:
  • Parallels Desktop 12 for Mac Home Edition
  • Parallels Desktop 13 for Mac Pro Edition

Symptoms

After suspending a Windows virtual machine in Parallels Desktop 14 and downgrading Parallels Desktop the virtual machine cannot be resumed.

The specified video memory size is invalid. notification message appears upon an attempt to resume the virtual machine

Cause

Video memory in the Windows virtual machine configuration in Parallels Desktop 14 was set to Auto.

Resolution

To resume the virtual machine it is required to stop it and change video memory settings:

  1. Start Parallels Desktop and do not try resuming the virtual machine.
  2. Double-click on the virtual machine name in the Parallels Desktop Control Center to open its window.
  3. From the top menu bar Actions menu select Stop.
  4. Then from the same Actions menu select Configure or use other ways to access the virtual machine configuration
  5. Go to Hardware - Video and change Memory to a required value.
    NOTE: For most of the situations assigning 512 MB is more than enough. If multiple high resolution displays are used assign 1 GB or even 2 GB if required.



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