Comments on: How to fix "Cannot start Microsoft Outlook. Unable to open Outlook window" error

Unable to open your Outlook? In this article you will find really working solutions for "Cannot start Microsoft Outlook" problem. The fixes will help you open Outlook again with no errors, the solutions work in all versions of Outlook 2016, 2013, 2010, 2007 and lower and on all systems. Continue reading →

Comments page 4. Total comments: 235

  1. It worked! YAY! Thanks a million!!!

  2. Hello Team,

    I am unable to open my old .pst files into new computer what could be the solution for the same I even tried to use Scanpst.exe to repair it but, not successful.

    Need assistance please

    Many Thanks

  3. Its Working...

    Thanks...

  4. I try to open Outlook and a message comes out that we "can only open one version of Outlook at a time". But I do not have any other version open!! can anyone help in words of one syllable please?

  5. Thanks creating a adding a new outlook mail worked for me. Thanks.

  6. Thank you so very much for your kind advice.

  7. Outstanding advice - thank you so much!!

  8. Svetlana- you are a life saver!!! I was trying to back up my contacts and screwed things up. This helped greatly!!!

  9. I had tried ScanPST.exe with no success. So, I followed your given reference about 5 best PST repair tool. I selected stellar PST repair tool and got access to some important emails of my Outlook mailbox.

  10. Thanks a lot. These steps fixed the issue which i was working for more than an hour

  11. Hello Svetlana,

    this helped me to resolve the issue without my IT to do this and they were not able to fix it. thanks for the useful article.

    You are awesome after Step 3 it did not change anything and it still throwed an error but when checked 3. Switch to the Compatibility tab "Run this program in compatibility mode for" was checked again as Windows XP.

  12. I had the same problem and eventually I resolved it by enabling the isatap adapter from Microsoft through the CLI (netsh int isa set state enabled. I have no idea what the link might be between these two but this resolved my headache. ;-)

  13. KrojamSoft FilesSearch Tool helped me in this case.

  14. i have to say thanks a lot for your help because i was facing some problems in my office outlook and after go on your steps now is okay thanks

  15. Thanks! It was the compatibility setting that fixed it for me in Office 2013.

  16. Helpful, Thanks.

  17. None of these worked for me, but I did find a solution...>>>

    control panel --> mail --> show profiles --> Add -->
    (complete wizard)
    then alter the drop down below-->
    change "outlook" to whatever name you just created.
    click OK and run outlook..

    solved the issue for my office 365 dilemma!

    1. Thanks ... this worked for me

    2. OMG! THANKS! THAT WAS JUST THE KEY!! FINALLY!

    3. Nice.
      Many Thanks. Its working.

    4. You are smart.

      Thanks a lot

  18. I was unable to open Outlook 2007 and was receiving a pop up stating an invalid XLM. I followed the instructions:
    Recover Navigation Pane configuration file
    and it fixed the fault.
    Many thanks.

  19. when i am trying click the outlook itself it is not opening with the error set of folders cannot be opened

  20. Superb.. Thank you so much :)

  21. Errores de Outlook

  22. Thanks Svetlana for this excellent write up. Recently, I encountered "Unable to display the folder...." error in my Outlook 2010 and your article helped me a lot. Now, my outlook application is working fine!

    - Mike

  23. Nice Work
    10X

  24. My problem is a little different in that I do not receive a "cannot open default email folder" note. When I click on the mail icon (Windows 8) the blue screen comes up with the envelope on it and then immediately returns to the start screen with all of the icons on it (not the desk top screen).

    Any suggestions for accessing Outlook email?

  25. An orphaned calendar was my problem. I received the error listed, but it corresponded with me removing an account from Outlook. I followed the steps above with no success. After remembering the removed email account, I added it back in from the control panel and opened Outlook without a hitch. After looking around I found a calendar attached to that email account, removed it then removed the account again. Now Outlook works fine.

  26. I have fix this issue by right clicking the Outlook shortcut properties, click compatibility tab and unchecked "Run this program in compatibility mode for" Windows XP (Service Pack 2) and click OK. This time I run the Outlook shortcut and it works fine.

    Note:For some reason, one of our user Outlook shortcut "Run this program in compatibility mode for" Windows XP (Service Pack 2) was set to enabled. The user did not make any changes to the compatibility tab.

  27. I have deleted my data file (.pst) by mistake though it does not contain any data that I require. However, I am unable to open outlook, it says data file missing. I do not have it in my recycle bin as well.
    Is there any way I can get outlook to open and then create a new pst maybe?

  28. i have some issue when i click to access the outloook-exprees in my desktop used window xp the my pc re-start why and solve the my issue uragent?

  29. Thanks! Running- outlook.exe/resetnavpane worked for me!

  30. Hi Svetlana,

    I'm so glad I found you and your excellent fix descriptions, you're a God send.

    Thank you very much for the info.

    Kind regards
    David

  31. Hi Svetlana,

    was looking for solution for about a week. found it here. for me the

    "3. Switch to the Compatibility tab and be sure to clear the "Run this program in compatibility mode for" check box" worked.

    Thank you very much
    Ilia

  32. OUtlook 2013 wouldn't open because of a problem with Google Chrome which also wouldn't open. I reinstalled Google Chrome and the problem was resolved. I went through the above steps first to no avail.

  33. My outlook is working under administrator mode, but while am login as a normal user it is not working.
    Could anyone help me to solve this ..

  34. Thanks for the info! After looking at other sites you had a fix that I hadn't tried/wasn't listed. I found Outlook.exe/ right clicked properties/ de-selected the ""Run this program in compatibility mode for" and it worked!!!!! Amazing! Thanks so much for the fix!!!

  35. Hi.. Thanks for the info.. I just disabled compatible mode in my Outlook 2010 and it works fine !!!!!!!!!!!

  36. hi all!
    my outlook is installed before 2 days ago and it fine ! but when i try to open and sync my email t have configure by outlook but it cannot finished and successes ! and when i want to use outlook after that time it can not opened and
    it says
    "The connection to Microsoft exchange is Unavailable .outlook must be online
    or connected to complete this action".then i hit the enter keyagain it appers other error box that say as following
    "cannot start Microsoft Outlook.cannot open the outlook indow.the
    set of folders.......as the the above messages>
    please help me >

  37. thanks

  38. Thanks for your support

  39. Thank you, thank you, THANK YOU!!!!

    Reset navpane sorted is.

    Did I say thank you?

    Thank you!

  40. :) Got it !!!!!!! its working now ;) Thanks team. thank u sooooooooo much.... :D

  41. I have a situation that is a bit complicated, I will try and make it clear.

    We have two domains with one running Exchange 2003. Clients from both domains have email accounts. So, wanting to upgrade to Exchange 2013 we installed one on the domain without the 2003 server (case of having too).

    Using a third party software we transferred all email accounts to the new Exchange 2013 server. We then took the 2003 off-line and out of the domain. Now due to account problems/setup the Exchange 2013 needed to be moved back to the domain that had the 2003 server. So we build another Exchange 2013 in the original domain where the 2003 server was and transferred all the mailboxes back to it. Then took the other 2013 server off line and out of the domain.

    So we ended up with a 2013 Exchange back in the original domain where the 2003 server was. All the email accounts in this domain are working fine. However all accounts in the other domain have an issue I can't resolve. After launching Outlook, it finds the account but errors out saying that Exchange is not available or is offline. When I check it keeps finding the server from the Exchange 2013 that we installed to transfer the accounts to, which is now gone. No matter when I do it won't find the new server. Outlook Web works for these accounts which is great.

    I have spend two days with this and it's driving me mad. Any help would be appreciated.

  42. Tried all the above on Outlook 2007 w/out success. I ended up moving all the user files to a different directory which forced Outlook to query for the missing .pst file. I selected an archive pst which got Outlook to open for me. Amazingly, I was able to then add the 'bad' .pst file into Outlook as an additional, non-default file. As far as I can tell all the content (email) is there. I ended up opening Outlook in safe mode and the email account settings quit working, but that was fixed by removing the old ones and re-adding them. I was then able to change the original .pst to the default and remove the archive one.

  43. Wow, this report is fantastic!!! Before seeing this report, We've got the error then reinstall, recreate profile and lots of actions during 4~5 hours , but now fortunatelly, I fixed this issue. :)

  44. Great article, solved my problem. Thanks a bunch!!

  45. Yes you rock !!!

    Creating a new outlook profile and restoring the old worked for me.
    Thanks a bunch!

  46. tnx a lot

  47. thankyou soo muchh,,

    solved my probs here. .

  48. thanks, I have found my solution here...

  49. I have tried everything for this issue and would like to try the compatibility mode uncheck that others are having success with. I need help finding the compatibility uncheck box for outlook - when I right click, I see a troubleshoot compatibility, but not a compatibility tab. I am running Windows 8 and Outlook 2013. Would appreciate any help. Thanks so much!

  50. the compatibility mode uncheck box was finally the best solution for my outlook "unopenness" case. thanks a lot for this very useful tips!

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