Outlook 2007 keeps running in task manager even after closing


  • On my windows XP system, I've outlook 2007 SP2. But I observe that even after closing the Outlook 2007 application, most of the times Outlook.exe keeps running in the task manager with a memory consumption of around 80-100MB. Waiting for 10-15 minutes for it to close did not help. Hence the next time when I launch outlook, it would not start & there's two instances of Outlook.exe in Task manager. I need to kill them & then only I could start outlook to work.
    Anyone let me know why this happens & is there any fix for this?
    Thursday, June 25, 2009 11:49 AM

All replies

  • Just go throught below article and see if you have installed any addins or any coflicting software which is trying to access outlook.exe
    Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|
    Thursday, June 25, 2009 11:53 AM
  • Thanks for your reply. This helped to a great extent.
    But when outlook 2007 is synchronizing, & if I try to close, it does not exit properly. Is there a way to fix that too.

    Actually I use RPC over HTTPS to connect to my exchange server
    Thursday, June 25, 2009 1:08 PM
  • Hi,


    Please firstly check whether following hotfix has been installed. Actually, I suggest that you have all the Outlook Updates installed on the client through Microsoft Update to check whether the issue persists.


    Description of the update for Outlook 2007: July 8, 2008


    If the issue persists, please also refer to following KB regarding the issue:


    The Outlook window closes, but the application continues to run when you try to exit Outlook


    I suggest you start Outlook with /Safe switch to check whether the issue persists. You can also use Process Explorer tool to check whether any third-party dll files runs under the Outlook.exe process.


    Check if 3rd party DLL files exist


    1) Download Process Explorer from the following site:



    2) Launch Outlook application.

    3) Run Process Explorer as administrator, accepted license.

    4) Locate to outlook.exe, and select Outlook.exe, click view --> Lower Pane View --> DLLS, and then click “Company Name” to sort by company name.

    5) Check if there are third-party company’s add-ins.


    If the issue persists, I would like to explain that the issue can be caused by more complicated factors. If you would like to identify the root cause of the issue, we may need to analyze the dump files. Unfortunately, debugging is beyond what we can do in the forum because of the nature of forum support. A support call to our product service team is needed for the debugging service. I'd like to recommend that you contact Microsoft Customer Support Service (CSS) for assistance so that this problem can be resolved efficiently. To obtain the phone numbers for specific technology request please take a look at the web site listed below:



    If you are outside the US please see for regional support phone numbers.




    Monday, June 29, 2009 6:05 AM
  • Hi
    Thanks for your reply.
    When I tried with the hotfix, it said "The expected version of the product not found on the system" which makes me think that the latest updates are already in place.
    I tried with process explorer & I see the following list on top if I sorted by company name & they dont have any company name listed beside.

    Below this list starts more files which shows the company as "Microsoft corporation". Hence I feel that there are no third party add-ons. I've also checked & made sure in the client that no third-party add-ons are enabled. So I feel I've go with microsoft support as a final resort.

    Wednesday, July 01, 2009 9:36 AM