[satbyy]

Certificate issuer "Microsoft IT SSL SHA2" is via Baltimore CyberTrust Root [1], which exists in Firefox's CA store, as well as /etc/ssl/certs. It also exists in Android (Settings -> Security -> Trusted Credentials). So, I'm not sure where Chrome-on-Android looks for certs.

[1] https://ssl-tools.net/subjects/26102266b387fb8b911bc6d37b35b...

Indeed SSL checker[2] says that "this certificate is not trusted by all browsers". Intermediate cert probably missing.

[2] https://www.sslshopper.com/ssl-checker.html#hostname=blogs.o...

[iso-8859-1]

Intermediate cert definitely missing: https://www.ssllabs.com/ssltest/analyze.html?d=blogs.office....