Microsoft Edge: Allow M365 authentication popups in work profiles

Vendor: Microsoft
Product: Microsoft 365
Type: Availability
Announcement date: 2026-05-12
Effective date: Date not published
Impact: Affected

In brief

What the source says

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. GA date: September CY2026 In development General Availability Worldwide (Standard Multi-Tenant) Microsoft Edge Web

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Who is affected: The audience described by the Microsoft update is represented by: Microsoft Edge: Allow M365 authentication popups in work profiles 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

Why it matters: The change matters because the official source describes: Microsoft Edge: Allow M365 authentication popups in work profiles 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

Urgency: Monitor

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Raw capture
2026-08-29T09:22:49.319599+00:00
Event
Microsoft Edge: Allow M365 authentication popups in work profiles 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. GA date: September CY2026 In development General Availability Worldwide (Standard Multi-Tenant) Microsoft Edge Web
source
Product Microsoft 365
Microsoft Edge: Allow M365 authentication popups in work profiles 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. GA date: September CY2026 In development General Availability Worldwide (Standard Multi-Tenant) Microsoft Edge Web
source
Insight a salesperson
Microsoft Edge: Allow M365 authentication popups in work profiles 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. GA date: September CY2026 In development General Availability Worldwide (Standard Multi-Tenant) Microsoft Edge Web
source

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