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When you try to sign into Microsoft Stream in Microsoft Edge, Chrome, Safari, iOS, or Internet Explorer, your browser may continually loop, and you can never sign in because you do not have or it is not allowed.


This issue occurs if your organization uses Trusted Sites and doesn't enable third-party cookies or URLs, including Microsoft Stream. In this case, the Stream web-based application cannot sign in, as the trusted sites for Stream are not enabled.


  • Microsoft 365 apps and services will not support Internet Explorer 11 starting August 17, 2021 (Microsoft Teams will not support Internet Explorer 11 earlier, starting November 30, 2020). Learn more

  • Please note that Internet Explorer 11 will remain a supported browser. Internet Explorer 11 is a component of the Windows operating system and follows the Lifecycle Policy for the product on which it is installed.


Change your browser settings using administrator rights or a Group Policy object (GPO).

Internet Explorer

  1. In the Internet Options window, select Privacy and Advanced.

  2. Select Accept for First-party Cookies and Third-Party Cookies and select the Always allow session cookies check box.

  3. In the Internet Options window, select Security Trusted Sites > Sites.

  4. Add the following sites:




Microsoft Edge

1. In the Edge Settings window, select Site permissions and Cookies and site data.

2. Turn on Allow sites to save and read cookie data (recommended) and make sure Block third-party cookies is turned off.

3. In the same window, under Allow, select Add to add the following sites:




Google Chrome

  1. In the Chrome Settings window, click Site settings > Privacy and security section, then select Cookies and site data.

2. Select Allow all cookies and make sure Block third-party cookies is not selected.

3. In the same window, under Sites than can always use cookies, select Add.

4. Add each of the following sites separately, and make sure you select the All cookies, on this site only checkbox:





1. In the Safari Settings window, scroll down and select Safari > Preferences.

2. Click Privacy, then select Prevent cross-site tracking to disable it.


1. Go to Settings, then scroll down and select Safari.

2. Under the Privacy & Security section, select Prevent cross-site tracking to disable it

Note: It's always good to validate and enable all trusted URLs for Teams and review the requirements in this article: Office 365 URLs and IP address ranges.

More information

If these workarounds don't resolve your problem, do one of the following:

  • To leave us a comment, click the No box in the Was this information helpful? section below and type your comment.

  • To talk to a support representative, click the Contact us button below. 

  • To get help from the Office community, click Ask the community below.

  • To get more information about general Windows 10 Help and troubleshooting, see: Need help with Windows 10?

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