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Getting "Unknown Error" in Outlook 2003/Exchange 2010 when attempting to delete items from Inbox

Posted on 2010-09-03
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Last Modified: 2012-05-11
When opening Outlook 2003 on our Terminal Server, everything comes up fine. We are connected to Exchange 2010 on Server 2008.

The problem occurs when attempting to delete a message from the Inbox. Regardless if you hit the delete key on the keyboard or the delete button on the toolbar, it does nothing the first time. Then, when you try a second time, it WILL delete, but it gives an error that says "Unknown Error".

This has become very annoying. Here is our history on what we've done to correct the problem:

First Attempt: Connected to session and rebuilt users mail profile, however when Outlook launched, all of his e-mail messages were displaying as if it did not recreate the profile. Logged user off of the TS, and back on. Same issue. Removed all mail profiles, launched Outlook and created a new profile. Still getting the Outlook unknown error when user presses delete or uses the X icon to delete messages. Must do this operation twice for the error to display.

Second Attempt: Found that there was a Rollup available.  The server had rollup 4, so this shouldn't be the issue.

Third: Tried exporting mail to pst, then removing mailbox, actually removed account from AD, recreated, imported mail.  same error.

Fourth: Found that items CAN be deleted with Shift-Delete

Any help with this problem would be greatly appreciated.

Thanks!
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Question by:PMVtech
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13 Comments
 
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Expert Comment

by:Paul Tozer
ID: 33597112
Are you in non-cached mode,

have you tried looking at this http://blogs.msexchange.org/walther/2009/08/30/exchange-2010-and-outlook-2003-clients-connection-issues/

Also it looks like RPC is timing-out before updating so add the following registry data to the server by using the Client Access role.

Start Registry Editor.
Locate and then click to select the following registry subkey:

HKEY_LOCAL_MACHINE\CurrentControlSet\Services\MSExchangeRPC\ParametersSystem

Note Create the \ParametersSystem registry subkey if it does not exist.
Add the following registry data to the server:

Value type: REG_DWORD
Value name: Maximum Polling Frequency
Value data: any integer between 5000 and 120000 (decimal value)
Exit Registry Editor.
 
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LVL 25

Expert Comment

by:Tony1044
ID: 33597180
I'd suggest exporting the mail to a PST again and running through this procedure:

http://support.microsoft.com/?kbid=814441

It will clean the structure.

When you then reimport from PST at least you will know it's clean.

Also - realise you said it was one user but have you tried the same from a different PC / OWA?
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LVL 25

Expert Comment

by:Tony1044
ID: 33597191
Sorry - brain freeze. Ignore the other PC bit.
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Author Comment

by:PMVtech
ID: 33597944
We have done this already, sorry.

"Start Registry Editor.
Locate and then click to select the following registry subkey:

HKEY_LOCAL_MACHINE\CurrentControlSet\Services\MSExchangeRPC\ParametersSystem

Note Create the \ParametersSystem registry subkey if it does not exist.
Add the following registry data to the server:

Value type: REG_DWORD
Value name: Maximum Polling Frequency
Value data: any integer between 5000 and 120000 (decimal value)
Exit Registry Editor."




We do NOT have any trouble with OWA.
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Author Comment

by:PMVtech
ID: 33598393
"http://blogs.msexchange.org/walther/2009/08/30/exchange-2010-and-outlook-2003-clients-connection-issues/"

If you read down at the bottom with the user comments, they never found a solution for the problem we are having. This sucks lol.
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Expert Comment

by:effinay
ID: 33598399
Did you restart the Exchange server services after adding that reg key?
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LVL 1

Expert Comment

by:effinay
ID: 33598425
PMVtech:

I type too slow. I just saw your comment. We had this issue recently with one user running on connected mode. But after moving the user to cached mode, the error stopped and everything ran as expected.
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Expert Comment

by:Tony1044
ID: 33599311
You cannot run Outlook in cached mode on a terminal server.

Did you try my suggestion of the cleaning utility? It does go through other folders too.
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Author Comment

by:PMVtech
ID: 33599358
You are right, you can not run cached mode on TS.

The computer is in use and I am not able to export at the moment. I will get back with you on this after the weekend.

Thanks for the help so far everyone!
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Accepted Solution

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PMVtech earned 0 total points
ID: 33616790
I can't run a scan because we are not using a PST or an OST.
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Expert Comment

by:Tony1044
ID: 33617449
Which is why in my post I said in the first line that I would try to export to a PST first and then run the scan.
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Expert Comment

by:adampayne
ID: 37534669
We are experiencing the exact same issue, did you ever get a resolution?
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Expert Comment

by:jruble
ID: 37957335
Same here!! Any update?
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