This is the Trace Id: c9d6e1b1c34b88c7c42e0f47bd405894

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Microsoft 365 delivers cloud storage, advanced security, and Microsoft Copilot in your favorite apps—all in one plan.
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Various apps that are part of a Microsoft 365 subscription, such as: Microsoft Copilot, Word, Excel, PowerPoint, Outlook, OneNote, OneDrive, Microsoft Defender, Microsoft Teams, Microsoft Designer, Clipchamp.

Microsoft 365 Root Certificate Chain Bundle - Worldwide

Certificate bundle containing root CA certificates for endpoint security and TLS authentication for Microsoft 365 Worldwide customers.

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  • Version:

    1.2

    Date Published:

    3/16/2026

    File Name:

    m365_root_certs_20220331.p7b

    m365_root_certs_20260316.p7b

    File Size:

    14.1 KB

    35.7 KB

    Certificate bundle containing root CA certificates for endpoint security and TLS authentication for Microsoft 365 Worldwide customers. This bundle is an aggregate of the Office 365 Certificate Chain bundles at https://docs.microsoft.com/en-us/microsoft-365/compliance/encryption-office-365-certificate-chains. Last updated: 9/29/2020

  • Supported Operating Systems

    Linux And Unix, Macintosh, Windows 10, Windows 11

    Windows, Mac OS, Linux, UNIX

  • Install the certificate bundle to computers used to connect to Microsoft 365 endpoints.

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