Trying to nail down some outlook performance issues after moving the company to Exchange 2010 SP1. Some, not all users are getting periodically disconnected from exchange (chached mode) when on the LAN. But do not experience the problem when using outlook outside of the office via outlook anwhere. External route to exchange server is direct from internet, firewall, switch, exchange. Internal Route is switch, exchange - same switch. I have done extensive network testing to see if there where any physical issues on LAN, cabling, switch. Also Outlook users sporadically get a message that the intended recipient is no longer found. Little message above To. They can send to recipient without issue, but curious as to why this message keeps appearing. Thanks - SJMP

It's going to be hard to diagnose that kind of problem with the scant information you have. Outlook Anywhere is much more tolerant of connectivity issues, so it might be that Internet users are being shielded from seeing the problems. I'd start looking into your network.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi SJMP, Do you run Outlook 2010? Please check whether there is any error event in the Event Viewer. And EXBPA is worth trying. Please check "Connection Status" (click Outlook icon with Ctrl) when the status is disconnected. Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi SJMP, Any updates on your issue?Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, On the server with the Client Access Role Install Exchange 2010 Update Rollup 1 and restart the server. Now make the following registry change. HKLM\CurrentControlSet\Services\MSExchangeRPC\ParametersSystem Create a DWORD called ”Maximum Polling Frequency” (without quotes) Make the value 10000 Note that this change is dynamic and clients will need to close and open Outlook again for the change to take affect. Or check below post : http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/d5a610d5-b3cd-40a5-8653-634f3b174f4e/ Dinesh S.

Can I update to rollup 2? Will this also address the issue or will I have to install update 1 separately?

Hi, The Rollup 1 in the KB is for Exchange 2010 RTM, please don't install it. And seems like the question is not the same symptoms. SJMP, you can update to Exchange 2010 SP1 Rollup 2, also this is the best practice. Update Rollup 2 for Exchange Server 2010 Service Pack 1 (KB2425179) http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0059546f-f43d-4c7e-8367-81c6d5642bf3&displaylang=en Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Thanks Frank - Thats what I did - Rollup 2. Still having the same problems. Not sure what to do from here. Outlook 2003 really does not work properly with exchange 2010.

Hi SJMP, "Outlook 2003 really does not work properly with exchange 2010." Could you please check whether all Outlook 2003 users have the issue? How about Outlook 2007 and 2010 users? Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.