Outlook 365 not opening in Windows 11

When I enter Outlook /safe it gives me one option as a profile name-Outlook. When I click Okay it says "Cannot Start Microsoft Exchange. Cannot open the Outlook window. The set of folders cannot be opened. the attempt to log on to Microsoft Exchange has failed." That's the same thing that happens every time I try to open Outlook. This occurred recently for me in Windows 11, only after the last update. The Microsoft Mail app does not allow me to send or receive e-mails. A fix is supposed to be forthcoming.

Hi, Gema.

Thanks for the response, but as I mentioned above, I already tried to start Outlook in safe mode and outlook didn't start in safe mode either.

Hi JP55!

I am an independent consultant from the Community and it is important for me to ensure that all your questions are answered and that you have a positive experience.

First, I advise you to analyze whether the failure is related to add-ins in the application.

1. Press the Windows + R keys, type Outlook /safe and click OK.
2. Choose the Profile and click OK; and click File> Options.
3. In the Outlook Options window, click the Add-ins option.
4. In the View and manage Microsoft Office add-ons option, go to the Manage option and select the COM add-ins option and click the GO button.
5. In the COM Add-in window, deselect all available Add-ins and click OK.
6. Close Outlook in Safe Mode, start Outlook normally and check to see if the problem persists.

Learn more about add-ins in Outlook: https://docs.microsoft.com/en-us/office/dev/add...

If you still get the error, follow the steps below to Create an Outlook profile and see if you get the same error:

1. Type Control in Windows search and click on Control Panel;
2. In the Windows Control Panel, select E-mail;
3. In the Configure e-mail dialog box, click Show profiles;
4. On the General tab, click Choose profile to be used and click Add;
5. In the Profile name box, type a descriptive file name for the email profile and click OK;
6. In the E-mail Accounts dialog box, select the option Add a new e-mail account and click Next;
7. Click the appropriate server type for the new email account and click Next;
8. Enter your account information in the required boxes and click Next;
9. Click Finish and OK.

Restart the computer and verify that the behavior persists with the newly created profile.

If you still have any questions, answer with the details to help you.

Thank you for using the Community.