Symptoms
When starting a published application in Parallels Client for Mac or Linux, following error message is displayed, accordingly:
Mac:
The following entries could be found in ParallelsClient.log file on Mac side(~/Library/Containers/com.2x.Client.Mac/Data/):
[I 00/00000000/T09EED000/P0000DC1D] Thu May 17 03:27:49 2018 - Starting RDP Connection to <server_name>
[W 00/00000000/T09EED000/P0000DC1D] Thu May 17 03:27:49 2018 - RDP Connection to <server_name> closed with disconnect reason 65540
[I 00/00000000/T951B6380/P0000DC1D] Thu May 17 03:29:01 2018 - RAS idle timeout reached
[W 00/00000000/T09EED000/P0000DC1D] Thu May 17 03:27:49 2018 - RDP Connection to <server_name> closed with disconnect reason 65540
[I 00/00000000/T951B6380/P0000DC1D] Thu May 17 03:29:01 2018 - RAS idle timeout reached
Linux:
Error 66: An internal error has occurred.
Cause
Parallels Client 16.2 for Mac uses RemoteFX/RemoteFX Adaptive graphic acceleration.
Parallels Client for Mac doesn't support Lossless image quality for a RemoteFX/RemoteFX Adaptive graphic acceleration.
Resolution
Edit RemoteFX image quality GPO on Terminal Server(s):
-
Start gpedit.msc and go to :
Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment -
Change “Configure image quality for RemoteFX Adaptive Graphics” value to High.
-
Alternatively, you may disable RemoteFX graphic acceleration in Parallels Client > Connection Properties > Display
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