Hi,
Error code 0x204 might be caused by serveral different reasons. So, you can try below methods to see if they help.
- On the remote windows PC, open "Run" and input "SystemPropertiesRemote.exe" to open up the System Properties screen.
Make sure you have checked "Allow remote connections to this computer", and uncheck "Allow connections only from computers running Remote Desktop with
Network Level Authentication" if your MAC pc is on the different network from the windows pc. - Allow Remote Deskstop through Windows Firewall. From both sides, you must ensure the firewall allows the remote desktop connection. Since the windows PC canbe
remoted from another windows PC. There should be no problem from the widnows side, you should check from the MAC side. - Ensure 3389 port is open from both sides. On your case, you should pay more attention to mac side. (Network Utility > Port Scan > Only test ports betwee 3389 and
3389). Or maybe you need to also assure the router is configured to forward the remote desktop port 3389. - If all above methods do not help, remove the temp folder of Remote Dekstop for mac (close the remote desktop app > Finder > search "group containers" > delete
UBF8T346G9.com.microsoft.rdc by right-clicking and choosing Move to bin from the context menu > restart your MAC pc) - The last method you can try is to reinstall the app or install the latest version of the microsoft remote desktop app for mac.
https://apps.apple.com/us/app/microsoft-remote-desktop/id1295203466?mt=12
Thanks,
Eleven
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