Microsoft 365 Activity: Unable to complete login securely

Teams LTI requires third-party cookies to complete the login process when loading content in Moodle. Some browsers block these by default, follow our guides to learn how to enable these

When accessing Microsoft content in Moodle such as Teams meetings or recordings you might see an error message: Unable to complete login securely. Please try again.

This is caused by your browser blocking third-party cookies, which are used by Microsoft to log in to their platforms. To sign in, you’ll need to enable third-party cookies in your browser. Find your browser in the list below to learn how to do this.

Google Chrome

Follow the steps below to enable third-party cookies in Google Chrome.

Click the three dots menu button in the top right corner, then select Settings

Click Privacy, then Third-party cookies

Check Allow third-party cookies

Return to the page that was showing the error message. The window should now load correctly.

Safari

Follow the steps below to enable third-party cookies in Safari.

Click Safari in the menu bar, then choose Settings

Click Privacy, then un-check Prevent cross-site tracking

Return to the page that was showing the error message. The window should now load correctly.

Microsoft Edge

Follow the steps below to enable third-party cookies in Microsoft Edge

Click the three dots menu button in the top right corner, then select Settings

Click Privacy, search, and services then Cookies

Uncheck Block third-party cookies

Return to the page that was showing the error message. The window should now load correctly.

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