Windows Remote Desktop Client fails to connect with error code 0x4

When I connect to my Windows 10 machine from my Mac via Microsoft Remote Desktop client v10 or from Windows I’m getting an error: Your session ended because of an error. If this keeps happening, contact your network administrator for assistance. Error code: 0x4


I reported this issue to MS via their Report Issue form on Mac Remote Desktop client and got the following response:

Set this key to a high value, like 10,000 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server

MaxOutstandingConnections

DWORD

Once I followed these recommendations the problem stopped.

https://serverfault.com/questions/959179/windows-remote-desktop-client-fails-to-connect-with-error-code-0x4/959180

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