Summary
When attempting to open Microsoft Teams, especially from within Canvas, some users encounter loading issues. This problem arises when the Trusted Sites feature is enabled in the browser, but the URLs for Microsoft Teams haven't been added to the list of trusted sites. This article provides instructions on manually adding sites to your Trusted Sites list.
To add Teams sites to your Trusted Sites list for:
How-To
Task: To manually add Microsoft Teams sites to your Trusted Sites list
Instructions
Microsoft Edge
Step 1 - In the Edge Settings window, select Cookies and Site permissions > Cookies and data stored > Manage and delete cookies and site data.
Step 2 - Turn on Allow sites to save and read cookie data (recommended), and make sure that Block third-party cookies is turned off.
Alternatively, if you have to keep third-party cookies blocked, do this instead in the same window:
Under Allow, select Add to add the following sites:
- [*.]microsoft.com
- [*.]microsoftonline.com
- [*.]teams.skype.com
- [*.]teams.microsoft.com
- [*.]sfbassets.com
- [*.]skypeforbusiness.com
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Google Chrome
Step 1 - In the Chrome Settings window, open the Privacy and security tab, and then select Cookies and other site data.
Step 2 - Under Sites that can always use cookies, select Add, and then select the Including third-party cookies on this site checkbox.
Step 3 - Add the following sites:
- [*.]microsoft.com
- [*.]microsoftonline.com
- [*.]teams.skype.com
- [*.]teams.microsoft.com
- [*.]sfbassets.com
- [*.]skypeforbusiness.com
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Mozilla Firefox
Step 1 - In the Firefox Settings window, select the Privacy & Security tab.
Step 2 - Under Cookies and Site Data, select Manage Exceptions.
Step 3 - In the Address of website text box, enter the following URLs, and then select Allow:
https://microsoft.comhttps://microsoftonline.comhttps://teams.skype.comhttps://teams.microsoft.comhttps://sfbassets.comhttps://skypeforbusiness.com
Step 4 - Select Save Changes.
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Safari
Teams support for Safari is currently in preview. Update the following setting, and then try again to access the Teams web client:
Step 1 - Select Preferences > Privacy.
Step 2 - Clear the Prevent cross-site tracking checkbox.
Step 3 - Close Safari, reopen the browser, and then navigate to teams.microsoft.com.
For more information, see Limits and specifications for Teams
This Microsoft article on Teams troubleshooting provides further background.
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Outcome
Users will be able to fix an error in their browser or Canvas when accessing Microsoft Teams.
Further Readings
Microsoft Support - Teams troubleshooting
Microsoft Support - Limits and Specifications for Teams
Need additional help?
For assistance concerning site creation, content sharing, file synchronization, or other common SharePoint, OneDrive, Teams, or Office app activities, we recommend our Microsoft 365 Learning sites:
Learn more about the great tools our Microsoft 365 Learning sites offer!
Visit the Technology Help Desk Support page to locate your local campus contact information or to submit an online technology support request. For password issues you must call or visit the Help Desk in person.