SSL / TLS Problems

Resolve SSL and TLS certificate errors that block email connections in Outlook, Thunderbird, Apple Mail, and mobile clients.

2 articles

How to Fix SSL/TLS Certificate Errors in Email Clients

SSL certificate errors in Outlook, Thunderbird, Apple Mail, or mobile apps block your email from connecting. Learn what causes them and how to fix each type quickly.

Intermediate 3 min read 3 May 17

SSL/TLS Email Certificate Errors — How to Fix Them

Fix SSL and TLS certificate errors in Outlook, Thunderbird, Apple Mail, and mobile email clients. Includes certificate mismatch and expired certificate fixes.

Intermediate 2 min read 6 May 17