An internal error has occurred error for Remote Desktop Connection:ATTACH ATTACHAn internal error has occurred error for Remote Desktop Connection is a very vague.
Posted by1 year ago
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A heads up for anyone relying on Remote Access via RDP to hosts that are being updated to 1809;
My Canary Targeted Update host came back online after the WU pushed 1809 update and reboot cycles, but clients wont connect via mstsc, only showing a black screen post log-in with an error prompt saying 'an internal error has occurred'.
Physical login to the same hosts works without any issues.
I manually updated another host to 1809 - With the same result.
The error is present across all Client Devices (mstsc on 1803/1809 + iOS/Android).
0014Is 0014anyone else seeing this behaviour?
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EDIT FIX :
The error only affects Hosts where Hardware Encoding and enforced AVC:444 mode is enabled through LocalDomain Group Policy. Disabling the custom GPO setings fixes the error, but naturally disables any Hardware Encoding.
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