How to Fix the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” Error

 

How to Fix the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” Error

Our article will focus on solving the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” error with universal, easy to apply fixes that work for most users.

Solution: Create a new Outlook profile

Here’s how you can create a new Outlook profile easily.

1. Press the Windows + R keys on your keyboard to launch the Run application. Using this, you can launch any app by simply typing, as long as you know its name.
   
   
2. Type in the word “control” and hit the OK button. Doing so will launch the classic Control Panel application.
   
   [Tip: Older generations of the Windows operating system, such as Windows 7 have a dedicated button for the Control Panel in the Start menu. If your system has it, you can skip the first two steps entirely!]
   
   
3. Change your view mode to either Small Icons or Large Icons to have all tools displayed on the main page.
   
   
4. Click on Mail (MS Outlook). Select Show profiles from the new window.
   
   
5. Click on the Add… button and fill out all the details needed to create a new profile. Once you’re done, go back to the General tab.
   
   
6. In the “When starting Outlook, use this profile” section, under “Always use this profile” select your newly created account and click OK.
   
   
7. Check if you can launch Outlook with your new profile.

Video Tutorial

Ref: How to Fix the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” Error (lnotechlibrary.blogspot.com)