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Microsoft 365: Some users may be unable to access SharePoint Online sites configured with Authentication Context

microsoftonline.com
August 2026 23 Minor incident

Title: Some users may be unable to access SharePoint Online sites configured with Authentication Context User impact: Users may be unable to access SharePoint Online sites configured with Authentication Context. More info: Specifically, users are unable to access SharePoint Online sites configured with Authentication Context through sensitivity labels. Current status: We've reproduced the issue in our testing environment and are reviewing HTTP Archive (HAR) logs to determine why direct links fail when Authentication Context is enabled through sensitivity labels. Scope of impact: Some users attempting to access SharePoint Online sites configured with Authentication Context through sensitivity labels may be impacted. Next update by: Monday, August 31, 2026, at 2:30 PM UTC

Started

02:38 UTC

Duration

Lasted 12d 14h

Source

IsDown

Next time

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Affected components: SharePoint Online

What happened?

Title: Some users may be unable to access SharePoint Online sites configured with Authentication Context User impact: Users may be unable to access SharePoint Online sites configured with Authentication Context. More info: Specifically, users are unable to access SharePoint Online sites configured with Authentication Context through sensitivity labels. Current status: We've reproduced the issue in our testing environment and are reviewing HTTP Archive (HAR) logs to determine why direct links fail when Authentication Context is enabled through sensitivity labels. Scope of impact: Some users attempting to access SharePoint Online sites configured with Authentication Context through sensitivity labels may be impacted. Next update by: Monday, August 31, 2026, at 2:30 PM UTC

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