Microsoft Outlook randomly or all the time doesn’t start and gives this error “Cannot start Microsoft outlook. Cannot open the outlook window. The set of folders cannot be opened. The information store could not be opened.” Happens mostly when the user login into the PC after a restart. Reinstalling the outlook will not solve the issue and not even resetting the navpane via this command outlook.exe /resetnavpane. There can be many solutions to this issue depending upon what OS and environment it is being used. Here are some solutions related to this issue: Show
Fix Cannot start Microsoft outlook. Cannot open the outlook window. The set of folders cannot be opened. The information store could not be opened.Solution 1: Close Lync before Starting OutlookWhen you log in to Windows, Lync (Skye for Business) automatically starts. Quit the Lync from Start Manager by killing its process and then start Outlook, it should work fine. After opening Outlook, you can open Lync with no issues. Solution 2: Setting Up Correct Outlook Data file as DefaultEnsure that the correct Outlook data file is set as default. Click on Start > Control Panel > Mail > Show Profiles > Properties > Data Files > Select the correct .pst file and click on Set as default. If the correct .pst file is already set as default then try the steps below: Right-click on Outlook (.exe) > Properties > Compatibility > uncheck all the boxes. Locate Outlook.exe in Program Files as it can be different with different Office Versions for the above step like the path for Outlook.exe of Office 365 in Windows 10 is:
Solution 3: Deleting Corrupt ProfileWhen opened, click on Mail (Outlook 2016) – It will show you settings of the account, data files, and Profile. Click on ‘Show Profiles‘ Button. You will find your existing profile in the window. Select it and delete it. Its the reason for conflict. Restart outlook. Solution 4: Fixing The Issue in Mac
Solution 5: For Older Outlook VersionsBackup anything currently in your profile %appdata%\Microsoft\Outlook folder
Start the outlook again and create a new profile, name it however you want. It will ask you for some basic information, your email address and it will figure out the rest if connected to your company’s exchange server. Solution 6: Fix Corrupt Profile of Outlook 2016
That’s it, next time Outlook will load using the new one. Solution 7: Fix Outlook Address Bookthis is a legacy folder located here
in a weird-looking folder like \492b5fea-f7bf-4bbd-9504-75882a5126e1. Inside this, you’ll find files ending in .oab e.g., uANRdex.oab etc. In my case for some reason the folder was empty and the files missing. Right-click on the folder and selected “Restore previous version” – somehow they got deleted on this system. There is little help with the old Outlook Address book. The addresses don’t live in “Contacts” and are only visible if you click the To: CC: or BCC: buttons on an email. See this page for trying to get addresses out of there. To get Outlook to stop referencing it; go to Control panel\Mail\Data files\Address Books (tab). Here “Remove” is not an option, but when I click “Change” it explains how to change to Contacts only. Solution 8: Repairing Outlook Data File
Solution 9: Disable Compatibility
Solution 10: Set Default Profile
2. Add your email account. 3. Then click on “Show Profiles“. 4. Delete default profile “Outlook” and Select radio button “Promote for a Profile to be Used” (for multiple profiles), then click apply and ok button. or 4. Select your profile “XYZ” and select the Radio button “Always use this profile” (for using a single profile), then click apply and ok. Hopefully following any of the ten solutions I wrote would solve this issue for you. How do you fix Cannot start Microsoft Outlook The set of folders Cannot be opened?Choose Start > Run, and in the Open box, type Outlook. ... . In the upper-left corner of Outlook, choose File > Options > Add-ins.. Select the check box next to an add-in you want to re-enable, and then choose OK.. Repeat all steps until you've re-enabled all of the original add-ins and revealed the source of the error.. How do you fix Cannot start Microsoft Outlook Cannot open Outlook window the set of folders Cannot be opened the attempt to log on to Microsoft Exchange has failed?This is what you need to do. Step 1: Simply open the Run dialog box on your system and type in "outlook.exe /resetnavpane". Step 2: After typing, press the Enter key or click on "OK" and then launch Outlook. The settings will begin to recover now.
What does it mean when Outlook says the set of folders Cannot be opened?According to users, The set of folders cannot be opened error can appear due to XML files in Outlook's directory. These files can become corrupted causing the problem to appear. To fix the issue, you need to delete those files manually.
Can not start Microsoft Outlook can not open the Outlook window the set of folders Cannot be opened the information store could not be opened?Run in safe mode Some Add-ins or custom items also may cause your issue, please try to restart your Outlook in safe mode(Windows +R>type "Outlook.exe /safe">enter) Repair your data file If your issue still exists, it may be related to your corrupted data file, please try to repair it to test.
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