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Slow outlook startup issue

Posted on 2011-10-25
Medium Priority
Last Modified: 2012-05-12
Hello Experts ,

Recently we have a particular Outlook agent taking much longer to connect to the Exchange server when starting Outlook. As the issue is sporadic we have not identified the real process of how Outlook stalls for this user.After checking connection status by using CTRL right click on the outlook agent and testing if the server name resolves to the server we are using all seems fine.

However we noticed one strange behavior, when outlook started without any issues the certificate prompt screen comes up almost immediately. On the other hand when Outlook waits with a Trying to connect to Exchange message on the status bar , the certificate prompt takes a long time to come up and it is hidden behind the main Outlook screen. As the user is often waiting for the connection to finish they do not realize they have a prompt to answer.

Is there any causes to this that we can find and resolve ? What would be a recommended next step in determining the slowdown ?

Thank you for your advice in advance.
Question by:lineonecorp
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LVL 14

Accepted Solution

Radweld earned 2000 total points
ID: 37029460
This could be a certificate revocation list error, basically the client checks back with the publisher to see if the certificate has been revoked. If this certificate was generated from internal pki then it could mean a configuration error of the pki. If the certificate is public then this could mean the client is unable to get onto the Internet to check the crl.

I've seen similar behaviour before.
LVL 14

Assisted Solution

Radweld earned 2000 total points
ID: 37029461
You can turn off encryption in outlook to stop using certificates and test this.

Author Comment

ID: 37029590
Thank you for the answers Radweld,We appreciate your assistance.

Your suggestion to test this brings up 2 questions that only require 1 answer:

Would the encryption not be required for the server to communiate with the client ?
As in would the outlook not change to Disconnected if we take off the encryption ?

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LVL 14

Assisted Solution

Radweld earned 2000 total points
ID: 37029824
You would need to turn off encryption on the client access server which does impact the rest of your users, to turn off encryption perform the following on a client access server.

Set-RpcClientAccess –Server <Client_Access_Server_Name> –EncryptionRequired $False

You could then turn off " Requires Encryption" in the outlook client.

The other thing that can cause Outlook to be slow is a poor performing global catalogue DC, if Active Directory is slow though you would see performance issues all the time in Outlook, not just on startup.

Expert Comment

ID: 37033266
Thank you for this we will schedule this during off hours and we'll post results of test. Cheers

Assisted Solution

lineonecorp earned 0 total points
ID: 37053804
Thanks for all the tips. It seems that this may have been caused by a DNS misconfiguration.  The server that the workstations were connecting to had 3 NICS and DNS was bound to all 3 instead of just a single one. When we bound to a single one the problem seemed to go away.

Author Closing Comment

ID: 37081717
Experts tip was not the answer but helped to get to answer through elimination.

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