Exchange Online: TLS 1.0/1.1 will no longer be supported for POP and IMAP starting in July 2026

Posted on 2026-04-30 by guenni

Exchange LogoMicrosoft has announced that deprecated TLS versions and endpoints for POP and IMAP in Exchange Online will no longer be supported starting in July 2026. This is because Microsoft plans to completely discontinue support for deprecated TLS versions (TLS 1.0 and TLS 1.1) for POP3 and IMAP4 connections to Exchange Online. Exchange Online tenant administrators must take action and ensure that clients support at least TLS 1.2. Read details within my German blog post [use build-in translation to switch language].

This entry was posted in Cloud, Security and tagged , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *

Note: Please note the rules for commenting on the blog (first comments and linked posts end up in moderation, I release them every few hours, I rigorously delete SEO posts/SPAM).