Available article translations:

Unable to switch to Coherence with multiple monitors

  • Parallels Desktop for Mac Business Edition
  • Parallels Desktop 10 for Mac Home Edition
  • Parallels Desktop 9 for Mac Standard Edition
  • Parallels Desktop 8 for Mac Standard Edition


Coherence view mode does not work. You get the following error:

    Unable to switch to Coherence. The virtual machine display configuration could not be applied …


  1. Start virtual machine, go to Start → in the search box type devmgmt.msc and hit Enter/Return.

  2. Expand Display adapters and make sure that there is no exclamation mark on the icon and the adapter is called Parallels Display Adapter.

    If these requirements are not met:

    • Right-click the adapter → Uninstall. If the pop-up appears, check Delete the driver software for this device and click OK.
    • Restart virtual machine and reinstall Parallels Tools (in Parallels Desktop top menu bar go to Virtual MachineReinstall Parallels Tools).

    If these requirements are met:

  3. In Parallels Desktop menu bar go to View and check Use All Displays in Full Screen option.

  4. Switch the virtual machine into Fullscreen view mode.

  5. Go to Start → in the search box type Control Panel and hit Enter (return).

  6. Go to Hardware and SoundDisplayAdjust Resolution (on the left pane).

  7. Click the additional monitors one-by-one, and in the drop-down Multiple displays menu select Extend these displays for each of the monitors.

  8. Exit from Fullscreen view mode.

  9. Enter Coherence view mode.

If the issue persists:

  1. Switch virtual machine into Window mode.

  2. Drag and drop the virtual machine window to the second monitor.

  3. Enter Coherence mode.

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