Starting on November 30, 2020, the Microsoft Teams web app no longer supports Internet Explorer 11. For more information, see Set mandatory or recommended policies and CookiesAllowedForUrls setting. Add the sites listed in step 3 above to the Content settings > CookiesAllowedForUrls setting, either with a mandatory or recommended policy.Download and install the Microsoft Edge administrative template.To change the settings by using GPO, follow these steps: In the same window, under Allow, select Add to add the following sites: Alternatively, follow step 3 if you need to keep third-party cookies blocked. Turn on Allow sites to save and read cookie data (recommended) and make sure Block third-party cookies is turned off. In the Edge Settings window, select Cookies and site permissions then select Manage and delete cookies and site data under Cookies and data stored. ResolutionĬhange the settings for your browser using administrator rights or a Group Policy Object (GPO). Therefore the Teams web-based application is not able to sign in. This issue occurs if your organization uses Trusted Sites and doesn't enable the URLs for Microsoft Teams. When you try to sign in to Microsoft Teams in Microsoft Edge, Internet Explorer, Google Chrome, Mozilla Firefox, or Safari, the site continually loops, and you can never sign in. Applies to: Microsoft Teams, Skype for Business Online.
