Tech or Treat! Write an article about your scariest tech disaster to win gadgets!Learn more


Exchange 2010

Posted on 2013-01-16
Medium Priority
Last Modified: 2013-02-15

I have an Exchange 2010 server and am in the process of moving users from the Exchange 2003 server and have started to see problems during the move of users.  I see outlook is connected but stuck on "updating this folder" and until I restart the server outlook will not update.  I can however see all my mail in outlook web access.  I have checked the exchange logs on 2010 and this one pops out

"Mapi session "number" exceeded the maximum of 32 objects of type "session"

I'm not sure if this matters but the mailbox database is on a ISCSI SAN

Question by:minniejp
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

ID: 38785404

Run EXBPA to identify possible problems, best would be to close outlook before mailbox migration. I had similiar problem when Exchange was out of MAPI connections, a simple registry tweak took care of it.

Expert Comment

ID: 38802723

There are multiple reasons for this (especially Outlook 2003 and Exchange 2010): - change session limits - disable session limits (possible perf issue of many users cause this).

Check also 

Had a case where in account options "Download shared folders" needed to be unchecked"

It is a good idea to check also client side usage (shared mailboxes for instance, VPN reinstall might help sometimes).

Accepted Solution

kugaconsultants earned 2000 total points
ID: 38872225
I had the exact issue and the best way to ensure that Outlook clients update the server address from the Exchange 2003 back-end server to the Exchange 2010 CAS server is to make sure the Outlook client is closed before performing a mailbox move.  The reason is because mailbox moves from Exchange 2003 to Exchange 2010 are not performed live unlike moves from Exchange 2007 and 2010.  Also, Outlook clients need to update the server address and this is only performed when Outlook is restarted.

Give this a try and I am positive you will not have any issues or only a few to deal with.

** Advertising removed by Netminder 15 Feb 2013**

Author Closing Comment

ID: 38877885
Spot on!

Expert Comment

ID: 38878069
I'm glad you had great results from this.  I just went through it for 300 users so I know the frustrations you were going through.  Best of luck with Exchange 2010!

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Know the reasons and solutions to move/import EDB to New Exchange Server. Also, find out how to recover an Exchange .edb file and to restore the file back.
Here in this article, you will get a step by step guidance on how to restore an Exchange database to a recovery database. Get a brief on Recovery Database and how it can be used to restore Exchange database in this section!
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Servers >> Data…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

647 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question