Microsoft will block POP3 and IMAP4 connections using legacy TLS 1.0 or 1.1 in Exchange Online from July 2026, ending its ...

Microsoft announced plans to deprecate legacy Transport Layer Security (TLS) versions and older endpoints for POP3 and IMAP4 connections in Exchange Online, as part of ongoing eff ...

Microsoft says it will start blocking legacy TLS connections for POP and IMAP email clients in Exchange Online starting in July 2026. The Transport Layer Security (TLS) cryptographic protocol protects ...

TLS conversion: The volume of TLS certificates used in companies has increased steadily in recent years due to the increasing adoption of the technology. Almost all (95%) security leaders say digital ...

Microsoft will block TLS 1.0 and 1.1 in Exchange Online by July 2026, requiring organizations to upgrade to TLS 1.2 or higher.