Struggling with MobaXterm X11 proxy: Authorisation not recognised error? Our Server Management Support team is available to help you with your questions and concerns.

MobaXterm X11 proxy: Authorisation not recognised

MobaXterm is a well-known terminal emulator as well as SSH client for Windows. Furthermore, it offers several useful features to help with remote administration. X11 forwarding is one of these features. It enables us to run graphical applications on a remote server and display them on the local machine.

However, some of our clients have been facing the following error message when they attempt to use X11 proxy in MobaXterm:

MobaXterm X11 proxy: Authorisation not recognised

According to our experts, this error indicates that the X server on the local machine has not been configured to permit connections from the remote server.

Fortunately, there is an easy solution to fix this issue. All we have to do is log in directly with the user that we plan to use xclock.

In most scenarios, the error occurs when we use su to appuser from a root or a different user.

As per our experts, the appuser has to add its entry to the authorization. In fact, this entry is the last entry in the .Xauthority file within the home directory of the last user who logged in to the server.

Here are a few more troubleshooting tips to help you out:

• Verify the X11 forwarding is enabled in the SSH connection settings.
• Ensure the X11 server is running on the local machine.
• Check the X11 authentication settings on the local machine.

Let us know in the comments if you are still having trouble with this error.

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Conclusion

To sum up, our Support Techs demonstrated how to resolve “MobaXterm X11 proxy: Authorisation not recognised” error.