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When I try to branch any Launchpad branch I keep getting the following error:

ssh_exchange_identification: Connection closed by remote host
bzr: ERROR: Connection closed: Unexpected end of message. Please check connectivity and permissions, and report a bug if problems persist.

and the branching fails.

Occasionally it works as normal but most of the time I get this error.

Why is this happening and how can I solve it?

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up vote 4 down vote accepted

The error you're seeing, and it seems like it's not a client-side issue, is probably a problem with the Launchpad servers.

However, I can't reproduce this at the moment. For production issues with Launchpad it's usually best to ask in the #launchpad channel on IRC or in the "Answers" section on Launchpad itself.

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I don't have this issue any more so I'm guessing it was just a temporary problem on their end. – dv3500ea Aug 29 '11 at 12:22
I have this problem . All the time any idea why this happens ? – vishal Jan 11 '13 at 22:05

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