Uncheck the Prevent cross-site tracking setting.

Use the following workaround to access the Teams web client: Teams support for Safari is currently in preview.

Add the sites listed in step 3 above to the Cookies > Allowed Sites setting.

Download and install the Firefox administrative template.

In the Address of website text box, type the following URLs, and then select Allow. Under Cookies and Site Data, select Manage Exceptions. In the Firefox Settings window, select the Privacy & Security tab.

Add the sites listed in step 3 above to the Content settings > CookiesAllowedForUrls setting.

Download and install the Chrome administrative template.

Under Sites that can always use cookies, select Add, and then select the Including third-party cookies on this site check box. In the Chrome Settings window, on the Privacy and security tab, select Cookies and other site data. In the Internet Options window, select Security > Trusted Sites > Sites. Select Accept for First-party Cookies and Third-party Cookies, and then select the Always allow session cookies check box.Īlternatively, follow steps 3 and 4 if you need to keep third-party cookies blocked. In the Internet Options window, select Privacy and Advanced. In Windows Control Panel, open Internet Options. 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.

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