Microsoft Remote Desktop for Mac Error 0xc07

Question

Good day, Community

I work off of a Mac v.13.6.6 and a Windows v.10 build19045.4291, computer. I have 2 Active Directory accounts, my everyday JohnDoe account and my break glass JohnDoeAD account. I use MRD v.10.9.6 on the Mac to log into my Windows servers and computer accounts but recently for some unknown reason I have been getting an "0xc07" error. Nothing has changed on our network and nothing has changed with my two accounts. I can log in with the JohnDoe account but not the JohnDoeAD account. I can even log into my Windows VM using JohnDoe and start up Remote Desktop Connection and connect with JohnDoeAD to any server or computer but it still will not work with my JohnDoeAD account when I use Microsoft Remote Desktop. I have completely uninstalled the program and all the preference files from the Mac and I get the same result, I even tried the new 10.9.7 Beta version of MRD and I still get the same result... oh yeah, I even tried using the IP address instead of the hostname in the client for the computer and I still get the same result, I am at wits end. If anyone has had this issue or if you know of a fix, it would be GREATLY appreciated. Attached is the Error message, thank you.

Answer 1

Hello,

To resolve the issue, try disabling NLA on the terminal side:

a. Open the gpedit.msc applet.

b. Go to Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Security.

c. Activate the "Require use of specific security layer for remote (RDP) connections" and set the Security Layer to RDP.

d. Turn off the "Require user authentication for remote connections by using Network Level Authentication" policy.

e. Restart the Terminal server.

This problem may be due to a communication error between the domain and your client. Disabling NLA means authentication will occur only between the terminal and the server, ensuring everything functions correctly.

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Answer 2

Error code 0xc07 in Microsoft Remote Desktop for Mac typically indicates an issue related to connectivity or authentication when attempting to establish a remote desktop session with a Windows-based computer or server. Here are some steps you can take to troubleshoot and resolve this error:

Check Network Connectivity: Ensure that your Mac has a stable internet connection and can communicate with the remote Windows computer or server. If you're on a corporate network, check if there are any network restrictions or firewalls that might be blocking the connection.

Verify Remote Desktop Protocol (RDP) Settings: Confirm that the Windows computer or server you're trying to connect to has Remote Desktop enabled and is configured to allow remote connections. You can check these settings in the System Properties or Remote Desktop settings on the Windows machine.

Check Remote Desktop Gateway Settings: If you're connecting to a remote Windows computer or server through a Remote Desktop Gateway (RD Gateway), ensure that the RD Gateway settings are configured correctly in the Remote Desktop app on your Mac.

Update Remote Desktop App: Make sure you're using the latest version of the Microsoft Remote Desktop app for Mac. Updates often include bug fixes and improvements that could resolve compatibility issues or errors like error code 0xc07.

Review Authentication Settings: Check if the remote Windows computer or server requires Network Level Authentication (NLA) for remote connections. If NLA is enabled, ensure that your Mac and the Remote Desktop app support NLA and are configured to use it.

Try Different Credentials: If you're using specific credentials to authenticate the remote desktop session, double-check that they are correct and have the necessary permissions to access the Windows computer or server.

Restart Remote Desktop Service: On the remote Windows computer or server, try restarting the Remote Desktop Services service. Sometimes, restarting the service can resolve connectivity issues.

Review Event Logs: Check the Event Viewer logs on the remote Windows computer or server for any error messages or warnings related to Remote Desktop Services. These logs may provide more information about the cause of the connection failure.

Test with Different Computers: If possible, try connecting to a different Windows computer or server to see if the issue is specific to one machine or a broader problem.

If you continue to encounter error code 0xc07 after trying these steps, you may need to further investigate the network configuration, authentication settings, or potential issues with the remote Windows computer or server. Additionally, contacting Microsoft support or your IT administrator for assistance may be helpful in resolving the issue.

Answer 3

The issue was resolved when it was discovered that the JohnDoeAD Break Glass account had been placed in a Protected Users group. This is a global security group for Active Directory (AD) designed to protect against credential theft attacks. The group triggers non-configurable protection on devices and host computers to prevent credentials from being cached when group members sign-in. Once I removed the account from the groups, I was able to log into my devices with Microsoft Remote Desktop using my break glass