security Source: BleepingComputer

📅 08 October 2026 at 04:30 PM UTC

Microsoft Outlook to block MSIX attachments starting November

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⚡ Executive Takeaways & Intelligence Summary

Microsoft announced that it will add .msix and .msixbundle attachments to the list of blocked attachments in Outlook Web and the new Outlook Windows client starting next month. [...]

Publication Reference: https://www.bleepingcomputer.com/news/microsoft/microsoft-outlook-to-block-msix-attachments-used-in-attacks/

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