Coherence Fails In Parallels 11 and Windows 10

[ThomasL3]

I have a late 2014 27 inch iMac with the 5k retina display. After installing Parallels 11, I cannot enter coherence mode. All I get is a black screen. I did NOT have this issue with Parallels 10! I have reinstalled Parallels Tools multiple times to no avail. Has anyone else experienced this? I submitted a support request but haven't heard jack.

 

[Maria@Parallels]

Hi @ThomasL3, please perform the following steps:
1. Start your Windows PC -> click on Start and type in the "Search" box "cmd" (without quotes) and hit Enter

2. In the Command prompt window please type the following command:

sfc /scannow and hit Enter.
3. Once the system scanning finished please restart your VM and check the issue.

 

[ThomasL3]

Didn't work. Now when I click on the Windows icon, it's still black. I've attached a screen shot.

 

[marat_t]

Hi, pls Increase video memory http://kb.parallels.com/en/123355
I'd also recommend setting RAM to 4 gb

 

[ThomasL3]

I set the RAM to 16 GB and the VRAM to 512 MB. All is working now! Thanks for your help!

 

[marat_t]

wow, sounds great =)