We are in the process of migrating from exchange 2007 to 2013. Coexistence is all set up, mail flow, migrations, all this is working fine. The issue is we are using Windows 2003 servers set up for use with Citrix. When we migrate a user mailbox to 2013,
whenever Outlook (2010--latest patches) is launched we immediately get a "problem with the proxy server security certificate error code 0" error message and can progress no further. We get this whether launching Outlook directly on the 2003
server or from the citrix implementation of Outlook. That user can use any other desktop or OS and does not have any issues whatsoever. I do not believe it is a cirix problem rather a OS problem running Outlook on a Windows 2003 server (SP2).
Anyone seen this issue or give me any troubleshooting steps.
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