Unable to switch to Coherence with multiple monitors

Symptoms

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 …

Resolution

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 Machine → Reinstall 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 Sound → Display → Adjust 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.