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Intermittent error messages from Outlook 2003 saying that "Outlook is trying to retrieve data from the Microsoft Exchange Server {server name}"

Posted on 2009-06-30
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Last Modified: 2012-05-07
We have recently changed telecom providers.  Since then, most of our users get the above-mentionned Outlook error message.  Outlook reconnects immediately, but the performance is significantly affected. These problems did not occur before the telecom switch.

The Exchange server is a virtualised server which runs out of our colocation facility.  It uses Exchange 2000 and our clients use Outlook 2003.   We have installed Outlook 2003 on another virtual server at the same physical location and running on the same blade server to test whether this client would experience the same problems and it has not.

From our remote location, we have pinged the exchange server and got no packet loss.  Other network tasks such as printing and moving files work without problem.

I reviewed posts on expert-exchange relating to my problem but could not find any that dealt with a change in telecom provider or equipment.

Does anyone have an idea where to look?
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Question by:JP307
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Expert Comment

by:Ubertam
ID: 24745770
Did you change your bandwidth?  I get that error with users that have huge mailboxes or if I'm opening multiple mailboxes.  This could easily happen if, say, you went from a 100 Mbit to 10 Mbit connection, etc.
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by:EndureKona
ID: 24745789
I have resolved this on many systems in the past by hard coding the NIC on the Exchange server to that of the network speed.    

Typical procedure I take is update the NIC drivers on the Exchange box and go into the config and lock it down to 1GB if a GB network or 100MB Full Duplex.    If possible I take another step on the switch and lock that port to the speed of the network.    At times servers have issues with the auto negoitation...    


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Author Comment

by:JP307
ID: 24746930
We have not decreased the bandwith.  For one site, we have in fact increased in from 10 MBits to 100 Mbits.

Following EndureKona's post, we have hardcoded the NIC on the Exchange server to that of the network speed and rebooted Exchange.  

This did not solve the problem.
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Expert Comment

by:Ubertam
ID: 24797018
If you're still having this issue, try modifying the following registry key on one of your computers:

HKLM | Software | Microsoft | Exchange | Exchange Provider | Rpc_Binding_Order

The default is: ncalrpc,ncacn_ip_tcp,ncacn_spx,ncacn_np,netbios,ncacn_vns_spp
Change it so it looks like this: ncacn_ip_tcp,ncalrpc,ncacn_spx,ncacn_np,netbios,ncacn_vns_spp

This will use a different protocol (TCP/IP) first and will usually speed up startup by a couple seconds and may solve this issue as well.  I'm not 100% that it will specifically solve this issue, but I have had very much success with performance in multi-site domains with this tweak.
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Author Comment

by:JP307
ID: 24797211
Our setup is:  ncacn_ip_tcp,ncacn_spx,ncacn_np,ncacn_vns_spp
So, TCP/IP is already our preferred protocol
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Accepted Solution

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JP307 earned 0 total points
ID: 25072845
The problem seems to have been fixed by doing some work on the registry related to memory usage
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