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Fixing the 'Server Busy' Switch to.. Retry error prompt

Hi all,

For a number of months now some of our users receive the Microsoft 'Server Busy' Switch to.. Retry error when opening Outlook 2007. The full message states 'This action cannot be completed because "" program is not responding. Choose "Switch to" and correct the problem..

Our environment is as follows:

Server 2008 OS
Outlook 2007 mail client
Exchange 2010
Hosted desktop on Citrix XenApp 5

There is never any entries in the event viewer logs relating to this prompt. When the user clicks 'Retry', it usually goes away however it is obviously annoying and sometimes requires the user to click 'Retry' a number of times before it disappears.

I understand this prompt occurs when an application is open and tries to make a network connection before a network connection has been established. This is not the case for us as the users have logged in to a Citrix sesssion before Outlook is open, and hence a network connection has obviously already been made. It seems to happen to different users at different times, some with and without additional PST files in their profiles..

Any idea's on the cause of this and how to fix it? Is it purely a network issue with Outlook being slow to connect to Exchange?

Thanks
Matt
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CVIT
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CVIT
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1 Solution
 
Simon Butler (Sembee)ConsultantCommented:
There isn't really enough information in your question to say where the problem is.
Are Exchange and Outlook fully up to date? Are the network card drivers on both the Exchange server and Citrix fully up to date?

In the Exchange Management Console, under toolbox there is a performance tool. Running that might give you an indication of where the problem is, if it is Exchange. However I would suspect it is a client issue more likely unless Exchange is under spec.

Simon.
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CVITAuthor Commented:
Looks to have been an issue on the ESX hosts that house the Citrix VM's. A bottleneck was occurring with processing and therefore causing a delay with Outlook connecting to Exchange on the initial start-up.
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CVITAuthor Commented:
Was resolved internally.
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