Exchange 2007: Mapi session exceeded the maximum of 32 objects of type “session”

Posted on February 13th, 2008 webmaster 29 comments          Print

Error Message:

Mapi session “/o=Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=JohnSmith” exceeded the maximum of 32 objects of type “session”.

Source: MSExchangeIS

Event ID: 9646

On the client side, the user is unable to connect to Microsoft Exchange or getting this error:

Unable to open your default e-mail folders. The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server is down for maintenance.

This usually happens when the user loses network connectivity while Outlook is still open. The Exchange server wasn’t able to close the sessions properly so they just stayed there even when they are not in use.

By default, Exchange only allows up to 32 MAPI (Outlook) sessions per user. To fix this problem, you must close some of the sessions.

What to do:

1. Download and extract Sysinternals’ TCPView (free) on the Exchange server
2. Open the Exchange Management Shell and type in the following command to get a list of all the opened sessions. Make a note of the IP Addresses:

    Get-LogonStatistics jsmith | Sort-Object clientipaddress | Format-Table username,clientipaddress,logontime 

3. Open Tcpview.exe on the server. Sort it by Remote Address, then sort it by Process.
4. Look for the IP Addresses from Step 2 in the Remote Address column (if you only see hostnames, go to Options -> uncheck Resolve Addresses) and close their connections for the store.exe process (right-click and choose Close Connection, you can select multiple connections by holding the Shift or Ctrl key)
5. Run the command from Step 2 again and you will see that the sessions disappeared. The user should now be able to connect to the Exchange server again.

System Administrator Appreciation Day

Posted on February 11th, 2008 webmaster No comments          Print

Don’t forget this very important day! It’s the last Friday of July (July 25 for this year). Mark it on your calendar!

Ok, I have to admit that I actually didn’t know that such a day existed until I found this site, which is the official System Administrator Appreciation Day website.

According to the site, this idea to have a special day for SysAdmins was created by Ted Kekatos, a system administrator in Chicago. He was inspired by a print ad for a Hewlett-Packer laserjet printer showing lines of employees bringing gifts for the IT guy who made the purchase.

The first SysAdmin Appreciation Day was celebrated on July 28, 2000. It has gained support from organizations such as the League of Professional System Administrators (LOPSA), Friends In Tech (FIT), Sunbelt Software, and “In The Trenches,” a podcast for SysAdmins.

The System Administrator Song

Related articles:

• http://news.bbc.co.uk/2/hi/uk_news/1460166.stm
• http://mcpmag.com/news/article.asp?EditorialsID=367

12 New Microsoft Security Updates This Tuesday

Posted on February 10th, 2008 webmaster No comments          Print

It’s that time of the month again, the second Tuesday of every month known as “Patch Tuesday,” the time when Microsoft releases its security updates.

According to Microsoft’s website, they will be releasing 12 new security updates this Tuesday, February 12. Seven considered “Critical”, five marked as “Important.”

Critical (7) – Software Affected:

1. Windows
2. Internet Explorer
3. Office
4. Visual Basic
5. VBScript
6. JSCript

Important (5) – Software Affected:

1. Windows
2. Active Directory
3. ADAM
4. IIS
5. Office
6. Works
7. Works Suite

Happy Patch Tuesday fellow systems admins, let’s hope nothing breaks!