Legacy TLS tour continues with Exchange Online blocking old versions from July 2026
ID: 3a620381-44df-5582-a793-233ca8691c31
STIX ID: report--3a620381-44df-5582-a793-233ca8691c31
Feed Name: The Register (Security)
Microsoft will begin blocking TLS 1.0 and 1.1 for POP3 and IMAP4 connections to Exchange Online starting July 2026; organizations that previously opted into legacy endpoints or use outdated email clients should verify support for TLS 1.2+ to avoid connectivity disruptions.
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