Troubleshooting: Connot Log in to MS Teams in Chromium Browser

Problem 

When you try to sign in to Microsoft Teams in Chromium Browser, the site loops continuously, and you can't sign in. 

For more information, see https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/teams-sign-in/sign-in-loop#resolution.

Solution

For Microsoft Teams to work in Chromium Browser, it is required to allow the use of cookies. You can allow the use of all third party cookies in Chromium Browser by disabling the Block third party cookies parameter under Apps > Chromium Browser > Chromium Browser Global > Privacy.

To make the necessary cookie exception while keeping the blocking of third party cookies:

1. Enable the Block third party cookies parameter under Apps > Chromium Browser > Chromium Browser Global > Privacy.
   MS Teams specific parameters are shown to configure the exception.
   

2. Enable the Enable Cookies Allowlist for MS Teams parameter.
   The Cookies Allowlist for MS Teams becomes activated with the list of necessary URLs as default.
   

3. Save the changes.