ArcMap remote desktop connection error with Windows10

Here's how I solved the problem (Edit Group Policy tool from Control Panel):

-Right click on Windows start menu and select Run (or windows+R)

-type cmd

-type gpedit.exe

-go to: Local Computer PolicyComputer ConfigurationAdministrative TemplatesWindows ComponentsRemote Desktop ServicesRemote Desktop Session HostRemote Session Environment

-set the following parameters to Enabled

Use hardware graphics adapters for all Remote Desktop Services sessions

Prioritize H.264/AVC 444 graphics mode for Remote Desktop Connections

Configure H.264/AVC hardware encoding for Remote Desktop Connections     

EDIT: After Feature update to Windows 10, version 1903 (4/9/2020) I needed to set the following to Disabled (same as @gisIT comments below)

Use hardware graphics adapters for all Remote Desktop Services sessions

I found that I actually had to DISABLE the group policy for "Use hardware graphics adapters for all Remote Desktop Services sessions" listed below.

Enabling did not resolve it--disabling and restarting did. The other two policies had no effect.

Here's how I solved the problem (Edit Group Policy tool from Control Panel):

• Right click on Windows start menu and select Run (or windows+R)

• type cmd

• type gpedit.exe

• go to "Local Computer Policy > Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment"

• set the following parameters to Enabled

  • Use hardware graphics adapters for all Remote Desktop Services sessions

  • Prioritize H.264/AVC 444 graphics mode for Remote Desktop Connections

  • Configure H.264/AVC hardware encoding for Remote Desktop Connections

It was necessary for me to set "use WDDM graphics display driver for Remote Desktop Connections" to disabled in order to fix this problem.

I have Windows 10 - version 2004 and ArcGIS ArcMap 10.7.

The following are all set to enabled: - Use hardware graphics adapters for all Remote Desktop Services sessions - Prioritize H.264/AVC 444 graphics mode for Remote Desktop Connections - Configure H.264/AVC hardware encoding for Remote Desktop Connections