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: 9/29/2020Supported 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.