Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I am using mac os 10.8.2, and connecting to a cloud computing cluster through Xquartz.

I do:

ssh -CY <uname>@serveradress
and then ./<softwaretoopen>

and it opens the software perfectly fine, but it is common that for some reason I loose the connection, and then when I try again I get the error:

ssh -CY <uname>@serveradress
and then ./<softwaretoopen>
Xlib: connection to "<servername>" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key

Then if I restart my computer and try again it's good again, but this is becoming extremely annoying since everytime I get disconnected have to close all open software, restart computer and try connecting again.

Any idea how to solve such issue?

Thanks in advance!

share|improve this question

migrated from stackoverflow.com Jan 26 '13 at 7:23

This question came from our site for professional and enthusiast programmers.

1 Answer 1

up vote 4 down vote accepted

I found the asnwer in link at the bottom of the page.

Basically what I have to do without restarting the computer is to:

rm ~/.Xauthority*

On the server, then close X11, then re-open X11 and connect to the server again.



share|improve this answer
JUst to update about it, it does not work all the time not sure why, if someone has more advice I'd be happy to hear about it, thanks! –  Dnaiel Jan 28 '13 at 17:50

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.