How to Fix Mac Microsoft Remote Desktop RDP Error Code 0x4

You have a Mac Computer and are running Microsoft Desktop (RDP) throws an Error code: 0x4 just randomly when you try to connect to a computer you have configured for connection.

For us, this problem just randomly started this year after Microsoft updated their RDP software. “Go Microsoft”

We have searched the web, and noticed that the suggestions to Reboot the computer, or restart the RDP software, or both. Do not appear to reliably work. Although we did have some luck with this.

Another suggestion was to copy or recreate the connection in RDP. Again, only limited success with this solution.

The Fix for 0x4 Errors on Mac RDP Remote Desktop Connection

For us the solution came when we went into the system preferences of the Remote Desktop Connection

And you will notice the default preferences look something like this.

We simply unticked the “Use hardware acceleration when possible” check box.

That’s it. After doing this you should notice that it fixes Mac RDP not connecting with 0x4 Errors.