MC1420903: Exchange Online Blocks Duplicate Dynamic Distribution Group Creation to Reduce Admin Overhead
Posted inExchange Online

MC1420903: Exchange Online Blocks Duplicate Dynamic Distribution Group Creation to Reduce Admin Overhead

Exchange Online will prevent creation of duplicate Dynamic Distribution Groups Message ID: MC1420903 [What and Why:] We are introducing a reliability improvement to Dynamic Distribution Groups (DDGs) in Exchange Online. To prevent unnecessary duplication and reduce administrative overhead, Exchange Online…
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MC1293480: Exchange Online Retires Legacy TLS for POP and IMAP Connections, Requires TLS 1.2 or Later
Posted inExchange Online

MC1293480: Exchange Online Retires Legacy TLS for POP and IMAP Connections, Requires TLS 1.2 or Later

(Updated) Exchange Online: Retirement of legacy TLS versions for POP and IMAP connections Message ID: MC1293480 (Updated) Updated July 7, 2026: We have updated the timeline. Thank you for your patience. [Introduction]We are retiring support for legacy Transport Layer Security (TLS)…
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MC1227623: Exchange Online Adds PowerShell Cmdlet to Change Meeting Organizer
Posted inExchange Online

MC1227623: Exchange Online Adds PowerShell Cmdlet to Change Meeting Organizer

(Updated) Change meeting organizer via PowerShell cmdlet in Exchange Online Message ID: MC1227623 (Updated) Updated July 6, 2026: We have updated the content. Thank you for your patience. [Introduction]We’re adding a new PowerShell cmdlet that lets administrators change the organizer of…
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