Outlook The Security Certificate Was Issued By A Company You Have Not Chosen To Trust [FREE]

Never click "Yes" to this error on a public network. Always verify the "Issued by" field. When in doubt, call your IT helpdesk and ask, "Did you guys recently roll out a new internal root CA?"

Decoding the Outlook Nightmare: "The Security Certificate Was Issued by a Company You Have Not Chosen to Trust" Never click "Yes" to this error on a public network

Outlook (and Windows) maintains a list of "Trusted Root Certification Authorities." These are global companies like DigiCert, GlobalSign, or Let's Encrypt. When a certificate is presented, Outlook checks: Is the issuer on my trusted list? call your IT helpdesk and ask

If the answer is "No," Outlook slams the brakes. This usually happens in three specific scenarios: Never click "Yes" to this error on a public network