Description
When users are signed in with a work account, some Microsoft 365 sites (for example, microsoft.com, cloud.microsoft, and microsoft365.com) may open authentication pop-up windows to Microsoft sign-in endpoints such as login.microsoftonline.com, login.live.com, or login.microsoft.com. These pop-ups are required to complete sign-in. Microsoft Edge now allows authentication pop-up windows from Microsoft first party services by default. Admins can control availability to this feature using the M365AuthPopupsInWorkEnabled policy.
Change History
May 15, 2026 at 12:00 AM
Updated
Release Date
Previous
June CY2026
New
July CY2026
Modified Date
Previous
2026-05-12T23:00:33.000Z
New
2026-05-14T23:15:59.000Z
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