Remove all Credentials that include the following: Office, Outlook, ADAL, and MSTeams.

Open the Credential Manager from the Control Panel:.

Step 2: Remove the old broken credentials from Windows In order to make the changes we must ensure that Outlook and al Office apps (that includes Word, Excel, etc…) are closed. Step 1: Close Outlook and all Office applications This entire process will take about half an hour to an hour depending on how tech savvy and familiar with the registry you are. To fix the issue we’re going to remove the old password from your computer, remove the old license activation, and then modify Outlook so that it authenticates a different way.

The problem is related to how Outlook authenticates with Microsoft’s Exchange Online servers. It’s a very frustrating issue and some readers have spent weeks trying to fix it, sometimes spending hours on the phone with tech support. The user will enter their password and submit it and then Outlook will just ask for the password again! Here’s the issue many people are having: Outlook was working fine for months or years and then suddenly it begins to ask for a password. Many readers have sent me this issue recently.

Office 365 keeps asking for activation