Link to home
Start Free TrialLog in
Avatar of regsamp
regsamp

asked on

Exchange 2010 users Outlook disconnected

Exchange 2010 users Outlook disconnected
Users migrated to Exchange 2010 from Exchange 2003 and e-mail flow has been fine for a couple of days but now  some users have their outlook disconnected.  We have turned off TrendMicro Scan mail on the Exchange 2010 server, Kaspersky anti-virus on the client machines and the problem still occurs intermittently.
Avatar of Manpreet SIngh Khatra
Manpreet SIngh Khatra
Flag of India image

Users migrated to Exchange 2010 from Exchange 2003 and e-mail flow has been fine for a couple of days but now  some users have their outlook disconnected - Which server do their profiles point to ? Can they access milbox using OWA\Webmail ?

Once you disable or stop AV on the Server it only works after restart so not sure if you have done that.

- Rancy
Avatar of rchamberland
rchamberland

Are you using Cached Exchange Mode or not?

What version of Outlook are you using?  Is everyone on the same version?
Avatar of regsamp

ASKER

Their profiles are pointing to the new Exchange 2010 server.  They have been able to access e-mail using WebAccess.  We have not rebooted once stopping the TrendMicro services.  Their tech stated that by stopping it that would be good enough.  Every user is on Outlook 2010.  Most are using Cached Exchange Mode.
They have been able to access e-mail using WebAccess - So your saying that WebAccess works when there is issue with Outlook ? If so something onthe network is bugging rather than the server as i see

Sometime some AV get a sync to the Server or database and would only be released at restart but if the tech said so maybe.

Try with Online mode and take the feedback.

- Rancy
Avatar of regsamp

ASKER

It is happening with users with Online mode.
Can you ping the Exchange server from a machine having the issue?

How many CAS servers do you have?

We also had an issue where users were going over the MAPI Limit (because of mutliple connections from smartphones, Outlook, etc).  The solution that we followed was similar to this - http://support.microsoft.com/kb/980049 and http://technet.microsoft.com/en-us/library/dd297964.aspx.
Avatar of regsamp

ASKER

I can.  I will look at the link for the MAPI....
Avatar of regsamp

ASKER

Seems like the users are getting Event ID: 0 Source: gupdate right before it happens and after in EventViewer
gupdate would normally be the Google Update Service.
Do they have it installed on the "problem" machines?
If so, try uninstalling and see what happens.
We have also had issues with Bonjour in the past causing network issues.
Avatar of regsamp

ASKER

I do not see Google Update Service on their machines.
Avatar of regsamp

ASKER

It is under services...correction.
You could try stopping and disabling the service and see what happens.

FYI, a number of folks at my company have Chrome installed and therefore the gupdate service and haven't had any issues.
Avatar of regsamp

ASKER

I am trying to disable it now and see.
Avatar of regsamp

ASKER

I have disabled Bonjour too to see.
Humm seems a lot happened in my few minutes absence :) .... please keep us updated and we can run through if the issue still is there.

- Rancy
Avatar of regsamp

ASKER

It has not happened for awhile but the google updater was not even installed on some of the people it happened to.  All that is listed in Event Viewer is Event ID 26, Outlook has stopped responding and then it reconnects.  There are no messages indicating what the issue is.
Is it happening mainly on laptops or laptops and desktops?

We had users with laptops hopping between Access Points and that was causing (along with smartphones) the MAPI issue I mentioned previously.
Avatar of regsamp

ASKER

It has not happened on any laptops yet.
Operating on the assumption that it is a Connections issue, try running Get-LogonStatistics and piping to an output file and see if the users in question are over the connection limit.
See http://technet.microsoft.com/en-us/library/bb124415(v=exchg.141).aspx for more information on Get-LogonStatistics.
ASKER CERTIFIED SOLUTION
Avatar of regsamp
regsamp

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Are your users in the same physical location and subnet as your Exchange CAS Server?

Or, do you have your CAS in a DMZ?

I'm tyring to understand why the router/firewall would play a role.
Avatar of regsamp

ASKER

All the users in the same physical location.  Because the SonicWall has SMTP inactivity timeouts to the Exchange server that appear to cause the Event ID 26 to appear in Event Viewer and Outlook to become disconnected.
Got it.  Glad you got your issue resolved.
Avatar of regsamp

ASKER

Well I am still monitoring it.  I am not sure yet.
Avatar of regsamp

ASKER

Found the answer on the above blog.