Outlook 2010 not responding


  • I have installed Microsoft Office on a Windows 7 machine. I have started to have problems with Outlook 2010 not responding. Usually this happens if you are moving around outlook, jumping from one message to another or when you hit F9 for a send and receive. Task Manager does not allow an "End Process" of Outlook.exe. I have to reboot to get Outlook to end. When restarting the computer, the "logging off" screen never closes and I have to do a hard re-boot.

    I have re-started in safe mode and have started Outlook in safe mode. When starting in safe mode I get this error message "Microsoft Office cannot verify the license for this application. A repair was attempt failed or was canceled by the user. The application will now shut down".

    The first time this happened, I went through the process of deleting the profile and starting over. I also went into Microsoft Office repair and re-entered the license key. I ended up reinstalling windows 7 and Microsoft Office and it has worked for a few weeks. Now I am back to the same problem. Outlook is not responding again. Same issues - cannot end Outlook in task manager and computer will not shutdown.

    I have noticed discussion about Go To Meeting software causing problems and I did install that in the last few days, but I see no Add-Ins in my outlook Add-ins tab. To the best of my knowledge Go to Meeting is just set up to work with FireFox or Windows Explorer. I have uninstalled Go To Meeting software and have re-booted, still same problem.

    I love the Office 2010 products and would like to get this resolved.

    Thanks for any support,



    Friday, June 25, 2010 3:04 PM


All replies

  • Via previous answers ...

    With prog shutdown, run Outlook.exe /resetnavpane



    • Marked as answer by Jennifer Zhan Wednesday, June 30, 2010 1:13 AM
    Monday, June 28, 2010 4:49 AM
  • Hi John,

    How's your email account set up? i.e is it exchange server, pop3, IMAP etc

    As Keith described, you can try to start outlook by using Outlook.exe /resetnavpane

    I also suggest you create a new outlook profile (how to create a new outlook profile see here: and repair your PST file (see here:


    • Marked as answer by Jennifer Zhan Wednesday, June 30, 2010 1:13 AM
    Monday, June 28, 2010 7:29 AM
  • I have had that problem since I installed the Beta version (Win7 Ultimate). This last weekend installed the new product hoping that this was just a beta problem but I still have the same problem. Reseach shows it was a common Beta problem.  It usually happens when I am composing an email. I have had it happen hundreds of times but have never been able to associate it with an particular thing I was doing. It can happen on any line of the email. When it does happen I have to restart Outlook. REALLY frustrating.

    Monday, June 28, 2010 9:35 PM
  • OK, I have followed the steps above and also re-loaded Office 2010 and after a few tries, it now appears to be working again. It has been running for a couple of hours now without crashing. Before it would crash almost instantly.


    Thanks for the suggestions,



    Tuesday, June 29, 2010 6:08 PM
  • Hi there:> You've installed either Office X4 Standard with the Corel WordPerfect MAIL 12 component or installed Corel Office Professional, & manually installed the Corel WordPerfect MAIL 12 add-on Office X4 component as a download. Even if you un-install the Corel Office X4 Standard or the Professional or the Corel WordPerfect MAIL 12 products, the problem is still not rectified at all. The solution is to completely re-install Windows 7 upon a clean install & don't use the old Corel Office X4 suites in question at all upon Win7 if using the latest Windows 7 operating system with the Microsoft Office 2010 products installed, as these old Corel Office X4 products are not Microsoft Office Outlook 2010 or Microsoft Office Outlook 2007 compliant.

    Also do observe the following:>

    Just use the latest Office 2010 RTM products. Then do the following: As you setup Outlook 2010 to work for the first time, there you'll need to input your correct ISP settings for either a pop3/IMAP 4 email accounts that you use. Also If the settings are not done correctly, you'll experience those problems you were having. - This depends upon how you setup your ISP settings within Outlook 2010, then also do remember to send yourself the test message that's displayed within Outlook 2010 there before completing your E-mail accounts settings within Outlook 2010 as this is to check that everything is in order with Outlook 2010! - If the test message does not get done correctly, then you have an ISP pop3/IMAP e-mail settings issue!

    Also, do take the following into concideration:> Your chosen Virus Scanner that you use for Windows 7 / Vista etc. - Please do try to either use the Microsoft Security Essentials (you'll need to select the download possibly twice to actually get their download), or just use the Panda Global Security 2010 as both these products do work fully with all the Microsoft Office 2010 products.

    The following virus scanners does clash with Outlook 2010 and also with Outlook 2007 as well. Becareful if & when using these anti-virus / virus scanners:> F-Secure 2009, Trend Micro Internet Security Pro 2010, Norton 360 v3x series. If using F-Secure Internet Security 2010 or a previous version, then pay attention to this:> If your system has any form of a nVIDIA Ion/GeForce Graphics Cards installed, then F-Secure will auto un-install all your nVIDIA drivers + any of the Ion/GeForce software that was installed by nVIDIA and it will also block these drivers as a problem, (this means you'll have no correct nVIDIA graphics drivers, so don't use it if you have any nVIDIA graphics card upon your computer/notebook system! Trend Micro will clash with Outlook 2010 if your Trend Micro settings are not correctly configured, so best to avoid that if using Outlook 2010.

    Lastly, you may beta test out any of the various anti-virus 2010 scanners available, but do so at your own risk!

    Thanks. Xen.

    • Proposed as answer by Chaz Weston Wednesday, June 30, 2010 11:11 AM
    Wednesday, June 30, 2010 11:10 AM
  • Turning off Windows Search (unchecking Microsoft Outlook in Control Panel: Indexing Options) solved this problem for me.

    I fought it for a more than a week off and on.  I have a new machine with Windows 7 and Outlook 2010.  I tried various methods to import an Outlook 2000 .PST and the system kept going non-responsive.  I tried reinstalling Office, creating new profiles, scanpst.exe, converting the old .PST using 2003 Outlook, etc.  Finally, at one lockup I got this clue:

    Microsoft Outlook (Not Responding) Cannot move the items.  'Windows Search' exited without properly closing your Outlook data file '\\server\User Folders\username\My Documents\Outlook Files\Outlook.pst'. 'Microsoft Outlook' must be restarted. If this error message recurs, contact support for 'Windows Search' for assistance.

    It seems unlikely that Microsoft would allow a major conflict like this to go out the door.  I suspect that there is a three-way conflict with my antivirus software, Trend Micro OfficeScan 10.0.  I will try the updated version, 10.5, and see if it allows Windows Search to run.

    Monday, November 22, 2010 7:04 PM
  • I updated my antivirus software to the latest version (Trend Micro OfficeScan 10.5) and it did not help.  Unloading it did not work either.

    My configuration does not allow Outlook and Windows Search to coexist.  It's a brand new PC.  There's not a lot on it.  It  does not make sense that Microsoft has a conflict with two of its mainstream programs.

    Before opening Outlook, go to Control Panel: Indexing Options, click Modify, and uncheck Outlook.

    Wednesday, November 24, 2010 10:20 PM
  • I did the same thing, turning of windows search, and it solved my problem.  I also use microsoft antivirus, crazy stuff.  I downloaded Google search which seems like it would be less efficient being it's not native, but what can you do.  Thanks for the share, everyone else with suggestions got so complicated I thought I might never solve it without taking my computer in.  Jeremy
    Tuesday, February 08, 2011 8:42 AM
  • I had the same problem with WIN7 x64 and Office 2010. Not responding and had to end-task in task manager.

    Once I modified exclusions to remove outlook in Indexing Locations, Outlook 2010 now runs smoothly.

    Monday, February 21, 2011 3:04 AM
  • I'm having the same issue on one of my users computers.  If un-indexing Outlook fixes it I'm going to be pissed because that is one of the best features IMO.
    Friday, March 18, 2011 3:29 PM
  • I have been fooling with trying to get Outlook to respond for 1.5 days and this fixed it immediately!!  Thank you!


    Monday, March 21, 2011 2:26 PM
  • I have also been suffering for day and a half. Unindexing fixed it to some extent. I am still experiencing "not responding" error but not everytime.
    Tuesday, March 29, 2011 3:47 AM
  • When ever I would "reply to all" outlook 2010 would not respond. I turned off indexing and outlook 2010 is running perfectly now. thanks for the fix!
    Sunday, May 29, 2011 4:59 PM
  • The way to fix  the Outlook not responding issue is by using the Office repair tool in the control panel.

    In the control panel: Highlight MS Office entry, click change on top bar, then select repair. 

    All those other non-fix gimmicks are a waste of time, and I wasted plenty time finding they all suck and no one mentioning the repair tool.

    Tuesday, July 19, 2011 6:02 AM
  • I have the same problem but I do not have "go to meeting" or other add-ins.


    Win 7 Professional, 64-bit, Outlook 2010, I get "not responding" almost daily, happens randomly when I click on an email message or when I delete message.  My primary email is G-Mail....  does that cause a problem?

    Sunday, November 27, 2011 4:05 PM