Windows Remote Desktop Client fails to connect with error code 0x4 [closed]
Solution 1:
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.
Solution 2:
Definitely, a Microsoft issue with RDPv10. Got same issue. Thanks for recommendation shared. Also, reboot of the remote machine helps.