Microsoft Root Certificate Authority 2011 (often found as MicrosoftRootCertificateAuthority2011.cer
openssl x509 -in msroot2011.cer -text -nooutAs of , this certificate is entering a critical transition period. Several key certificates in the 2011 chain are scheduled to expire in June and October 2026 , requiring systems to migrate to the newer 2023 certificate chain to maintain full security. How the Microsoft Root Certificate Authority 2011 Works microsoft root certificate authority 2011cer work