Outlook on Citrix Error Message

I have a user and every time he tries to open Outlook on his Citrix desktop he receives the following error:

"Cannot open your default e-mail folder.  Microsoft Exchange is not available.  Either there are network problems or the Exchange server is down for maintenance"

He is the only user having the problem, further, he is able to open Outlook on his desktop, his iPhone is still working and he can use OWA.  

I tried removing his profile from the Citrix Server but that did not work.
There are no OST or PST files associated with this account
I removed the outlook.dat file and extend.dat file
I restarted the RPC service on the server

Does anyone have any ideas how I can get this user working again?

Exchange 2010
Outlook 2010
Citrix Xen Server
commengAsked:
Who is Participating?
 
David Paris VicenteConnect With a Mentor Systems and Comunications  Administrator Commented:
Hi.

Make a copy of the outlook profile and then create a new one. Maybe is profile have some  problems or it´s corrupted.
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David Paris VicenteSystems and Comunications  Administrator Commented:
Can you confirm in the Outlook Client if Encrypt Data is enabled?

Go to the account options -> More settings  -> Security

And by the way there any events reported?

Regards
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commengAuthor Commented:
The encrypt data is enabled.  I tried disabling it but it had the same result so I re-enabled it.

The only error in event view is as follows:

Microsoft Outlook
Cannot open your default e-mail folders.  Microsoft Exchange is not available.  Either there are network problems or the Exchange server is down for maintenance.
P1: 300032
P2: 14.0.6029.1000
P3: heqz
P4: 0x8004011D
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David Paris VicenteSystems and Comunications  Administrator Commented:
This is a new mailbox created on Exchange 2010 or was migrated?

Can you provide more details?

Can you take a look here and see if can help you in case your mailbox was migrated from a earlier exchange -> Microsoft KB

Can you also check the event log of exchange to see if there are any 9646 events.
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commengAuthor Commented:
The box was migrated from 2003 about 3 years ago.  I would think if it was an AD problem more than just Citrix would be effected, he wouldn't be able to work anywhere and if it was a migration issue, then it would have appeared sooner.  He was working in Citrix without an issue until today.
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commengAuthor Commented:
Yes, there is error on the exchange server:

Mapi session "8ca49366-c139-4915-bee1-dc9bf0cc5abb: /o=commeng/ou=first administrative group/cn=recipients/cn=dbrassell" exceeded the maximum of 32 objects of type "session".
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David Paris VicenteConnect With a Mentor Systems and Comunications  Administrator Commented:
Ok.

Maybe something weirdo happens with your Exchange services or IIS usually a rebooting the server solves the problem.

The problem can start escalating for other users, so if I were you I restart the server and check if the problem persists.

Regards
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commengAuthor Commented:
I will restart the server in the morning unless things get worse
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David Paris VicenteSystems and Comunications  Administrator Commented:
Great.

Let us know if helped.

You can also take a look here for user mailbox problems that has hiting the sessions limits -> user mailbox has hit session limits

You could also change the MAPI sessions per user on your server, but I wait first for the reboot, cause you are just with one user with problems.

Regards
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commengAuthor Commented:
I restarted the server this morning and now he is getting

"Outlook cannot log on.  Verify you are connected to the network and are using the proper server and mailbox name.  The connection to Microsoft Exchange is unavailable.  Outlook must be online or connected to complete this action."

Others are not having the same problem and I can ping the server by both IP and Name.
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