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Microsoft Exchange Online Hybrid Modern Authentication sync delays affecting Outlook mobile users

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📰 1 unique sources, 1 articles

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Microsoft is addressing an Exchange Online issue affecting Outlook mobile users with Hybrid Modern Authentication (HMA). The problem, caused by a recent service update, results in 12-hour sync delays and mailbox crashes. The issue began on August 17, preventing users from accessing email and calendars. Microsoft has deployed a fix to prevent sync jobs from entering a quarantine state. Additionally, Microsoft is investigating a separate issue causing blank screens and freezes in Microsoft Teams desktop app during meetings and calls, potentially affecting users with specific Intel drivers.

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  1. 23.08.2025 17:15 📰 1 articles

    Microsoft Exchange Online sync delays affecting Outlook mobile users

    Microsoft identified an issue with Exchange Online causing 12-hour sync delays and mailbox crashes for Outlook mobile users with Hybrid Modern Authentication (HMA). The problem began on August 17, 2025, and was caused by a recent service update. Microsoft deployed a fix to prevent sync jobs from entering a quarantine state. Additionally, Microsoft is investigating a separate issue affecting Microsoft Teams desktop app users with Intel driver 32.0.101.69xx versions, causing blank screens and freezes during meetings and calls.

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