Why do I obtain this error: 'Error 'Invalid MIT-MAGIC-COOKIE-1' when I do sudo to lauch MATLAB on a Linux machine in MATLAB (R2012b)?

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When I remode desktop to a Linux machine, where MATLAB is installed, I obtain the error:
Error 'Invalid MIT-MAGIC-COOKIE-1'
Could you help? Thanks!

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 9 May 2013
Please note that we do not support Remote Desktop Connections. But the follwoing quick fix will solve the issue.
The issue is due to XAUTH and/or XHOST when you are trying to be a super-user and make connections through the X server.
The workaround is to execute the following in the terminal, as a normal user:
xhost local:root
Then sudo to MATLAB.
sudo matlab
You may want to automate it in a script and create an alias for launching MATLAB as a super-user.

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