Coherence mode greyed out on Parallels 12

[DrB]

Yes, I have, each time. And it happens only on the 13", not my other machines. Is there a better way to get service support in having someone 'look at my screen' as it's happening (similar to how Apple Joint Venture does it)?

 

[PhilipE1]

I have recently updated to Parallels 12 using Sierra/Windows 7, but cannot enter Cohernece mode. It is simply greyed out.
There is no support yet for Parallels 12, and I have tried those for versions 11 and below.
I have tried reinstalling Parallels, and using Disk Utility to repair, but no effect.
I have also checked the Display adapters and there is only a Parallel VGA adapter, so no conflict there.

Any suggestions?
Plasticmat

I have recently updated to Parallels 12 using Sierra/Windows 7, but cannot enter Cohernece mode. It is simply greyed out.
There is no support yet for Parallels 12, and I have tried those for versions 11 and below.
I have tried reinstalling Parallels, and using Disk Utility to repair, but no effect.
I have also checked the Display adapters and there is only a Parallel VGA adapter, so no conflict there.

Any suggestions?
Plasticmat

I also had a similar problem (during late Sept 17) after installing latest Windows 10 security update, once Parallels 12 had loaded and when 'right clicking' the 'View' tab, I could not 'Enter Coherence' (it was greyed out), but was able to Enter and Exit Full Screen. After several attempts by repeatedly Entering and Exiting Full Screen, I discovered that 'in desperation' by (unchecking) 'Use All Display Adapters in Full Screen', this enabled me to 'Enter Coherence'. So I decided that after the Update, Windows must have tried to use all Windows generic WDDM drivers, hence had caused the problem. I have updated many times previously and never encountered this issue, so now think it must have been a conflict with too many Display Adapters being present in this case.