Search

Language:  
Search for:

Available article translations:

Cannot enter Coherence mode after upgrading to Windows 8.1

APPLIES TO:
  • Parallels Desktop 9 for Mac
  • Parallels Desktop 8 for Mac

Symptoms

Since upgrading to Windows 8.1 I cannot enter Coherence mode.

Error:

    "The virtual machine display configuration could not be applied"

Cause

Parallels Display Adapter was not installed properly

Resolution

  1. Make sure Parallels Tools are reinstalled: KB 115776 or KB 115835
  2. Go to Device Manager:

    • switch to Start Screen
    • start typing "Device Manager"
    • switch to "Settings"

    • click on Device Manager

    • Expand Display adapters and Monitors sections. Make sure "Parallels Display Adapter (WDDM)" and "Generic non-PnP Monitor" are installed.

    • If you see exclamation marks next to those devices or "Parallels Display Adapter (WDDM)" is not installed (some other display adapter is shown instead):

      • Right-click on those devices and choose "Uninstall"
      • Click on to scan for hardware changes. Proper drivers should now be installed.
    • Make sure the number of Generic non-PnP Monitors matches the number of real Monitors connected to your Mac.




Related articles:

Search words:

PA

PD




1e5db16426987d561060acdf56d947b4 48e7cf384e3b46432e32e6040476f122 33c4522b6fa9ca8e050f19b889fb58f1 790d27220dd34433ff172f45c18cfb98

FEEDBACK
Was this article helpful?
Tell us how we may improve it.
Yes No