Outlook 2007 periodically disconnects from Exchange 2010 CAS - OWA works

Status
Not open for further replies.
H

HWH Support

We are in the process of migrating from Exchange 2003 / Outlook 2003 to Exchange 2010 / Outlook 2007. Out of our 200 users 95% are on Outlook 2007 and 70% are on Exchange 2010. Outlook Anywhere seems to work fine 99% of the time for all users. OWA works well inside the network and via the internet.

Our problem is this. A random user will complain, out of the blue, that their outlook client has lost connection to the server. When this happens, we've seen it prompt for a password or just refuse to connect. If the credentials are provided or not it will still not connect. Keep in mind that this same computer was working just fine for the previous hours and days and weeks. Some random period of time later, 5 - 60 minutes, the Outlook client will reconnect and the user can again work normally. Throughout the disconnected time the user can reliably connect via OWA.

If I launch Outlook and ctrl+click the system tray icon and choose connection status, it lists just the CAS server with a state of disconnected. The connect button will cause a second entry to quickly appear and then disappear and the original entry will flash connecting then go right back to disconnected.

My research has turned up some blog posts to a similar problem within Exchange 2007 that spoke of an IPv6 issue. However further research lead me to believe that 2010's integration with IPv6 would not allow the same " turn off IPv6" solution that " solved" the problem with Exchange 2007.

As background data, we're also seeing issues with messages randomly getting hung in various users outboxes that we can clear up by restarting Outlook and forcing a send/receive.
Any help and insight is greatly appreciated.
 
J

Johan Veldhuis [MVP]

Hi,

Can you give some additional information about your environment: how much CAS servers, is NLB used etc. Besides this perform an automatic configuration test by ctrl+click the Outlook system tray icon and post the output here.

Regards,

Johan

Exchange-blog: www.johanveldhuis.nl
 
K

Khoj Sahiwala

Are you receivign an event 9646 , By default if the rpo connections exceed to 32 it disconnects the client until the connections are resetted. This was very prevalent in Exchange 2003 though .

You can check for get-logonstatistics for that particular mailbox and get the details as the connected mailbox getting disconnected and not connecting again points to this issue.

You can also use exmon
 
Status
Not open for further replies.
Thread starter Similar threads Forum Replies Date
A Outlook 2007 periodically (1-2 times per day)locks up when trying to send email. I digitally sign all mail. When Outlook became non-responsive Using Outlook 2
A COM add-in causes Outlook 2007 to periodically crash where it did not in Outlook 2003 Outlook VBA and Custom Forms 3
S Verwendung von Outlook 2007 Using Outlook 0
A Arthur needs help with 2007 Outlook e-mail Using Outlook.com accounts in Outlook 3
M PST import from Outlook 2007 to 2010 - Address Book contacts all in 1 group Using Outlook 4
S outlook 2007 calendar search Using Outlook 6
B Migrate Outlook 2007 to Office 365 Using Outlook 3
X I have met my waterloo trying to resolve embedded graphics problem with outlook 2007 and now 2016 Using Outlook 1
R Outlook 2007 only loads some appointments Using Outlook 0
C Move Outlook 2007 to new PC with Outlook 365 Using Outlook 3
J Outlook 2007 Hide Messages Option not Available Using Outlook 2
S Outlook 2007 Calendar instant search problem. Windows 7 Using Outlook 4
S Outlook 2007 Calendar instant search problem. Windows 7 Using Outlook 0
B Server errors Outlook 2007 Using Outlook 1
S Reboot of frozen windows7 results in changed outlook 2007 settings Using Outlook 1
S Outlook 2007 printing wrong email address at top of page Using Outlook 8
M Configure outlook 2007 to accept digital signatures Using Outlook 2
D Outlook 2007 crashes when opening an email Using Outlook 2
R New chap saying hello and needing advice on Outlook 2007 thumbnails Using Outlook 3
icacream From Outlook 2007 to 2016 ! Using Outlook 9
vodkasoda Object could not be found Error in Outlook 2007 Outlook VBA and Custom Forms 5
S Outlook 2007: Address Cards allow entering text! Why? Using Outlook 3
S View Appointment in Text Wrap in Outlook 2007 Month Calendar View Using Outlook 0
L Outlook 2007 Separate the Send/Receive functions Using Outlook 2
M Outlook 2007 Contacts Glitch: Creating a new email Using Outlook 1
C Move from Outlook 2007 Enterprise (MOE) to Outlook Pro plus 2007 Using Outlook 1
J reinstalling Outlook 2007 asking for user name & password Using Outlook 14
P outlook addin unloaded in office 2007 Using Outlook 0
B Fonts in Outlook 2007 Using Outlook 4
R Add Exchange Account to existing POP3 Outlook 2007 Profile Using Outlook 0
C out of space in file group Outlook 2007 Using Outlook 2
A Moving archived contents in Outlook 2007 back into working folders Using Outlook 0
P Outlook 2007 Email Categorization using VBA Outlook VBA and Custom Forms 1
M Unable to Configure Gmail Account in Outlook 2007 Using Outlook 1
R Outlook 2007 or 2010 - Lock Down Functionality Outlook VBA and Custom Forms 3
S Outlook 2007, windows 10 Font size Using Outlook 1
Diane Poremsky Manually create a POP3 account in Outlook 2007 New Slipstick.com Articles 0
J Can Click to Drag Custom Form Field But Cannot Drop When Designing in Outlook 2007 Outlook VBA and Custom Forms 2
L Outlook 2007 Font Using Outlook 3
J Outlook 2007 connector and Windows 10 Using Outlook 3
R Outlook 2007 - Shared Accounts and Resources without Exchange Server Using Outlook 0
L Outlook 2007 - Macro Re Search Using Outlook 16
D Outlook (Office) 2007 & Windows 10 Pro Using Outlook 6
MattC Problem with Outlook 2007 & iCloud / duplicate tasks Using Outlook 1
D Outlook 2007 e-mail header- How to set font & font size in received message headers ? Using Outlook 2
P How to switch back from Outlook 2010 to Outlook 2007? Using Outlook 3
L Outlook 2007 Macro to Contact From a Field Using Outlook 3
A Corrupt tasks in Outlook 2007 Using Outlook 1
Diane Poremsky Outlook 2007 with Office 365? New Slipstick.com Articles 0
D Need Genuine Office or Outlook 2007 Using Outlook 3
Similar threads


















































Top