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Articles for product: Exchange Online

Article ID Article Title Hidden
4459261 Primary SMTP proxy address is replaced by targetAddress value in a hybrid environment
4462988 "REST API is not yet supported for this mailbox" error for request to a mailbox
4467875 "550 x-dg-ref header is too long" NDR when you send mail in Exchange Online
4481100 Unable to upgrade distribution lists to Office 365 groups
4482720 "Bad Request" error when you try to connect to Exchange Online PowerShell
4486479 On-premises users can’t access cloud archive mailboxes that they have Full Access permission to in Outlook
4486480 "Your request can't be completed right now" when accessing public folder items by using OWA
4486848 ArchiveStatus is set to "None" for an active archive mailbox in Office 365
4487380 UserAgent property value in the unified audit log from the Security & Compliance Center
4490129 Sender Rewriting Scheme (SRS) in Office 365
4490155 Email messages redirected from one mailbox to another mailbox through an Inbox rule are marked as SPAM
4490420 GetFolder requests for a Public Folder mailbox hosted in Exchange Online can sometimes return an incorrect TotalCount value
4490422 Exchange Web Services notification events can sometimes return an UnreadCount of -1
4491013 Outlook client displays Teams or Skype for Business retention policies
4495258 "TLS negotiation failed with error NoCredentials" error if messages to external domains are deferred
4502865 "User is already being moved‎" error when you move mailboxes from on-premises to Exchange Online in a hybrid deployment
4505746 EAC is slow to display recipients if PowerShell Transcription is turned on
4508006 Cannot migrate on-premises archive mailboxes to Office 365 in a hybrid migration
4514202 "550 5.1.10 RESOLVER.ADR.RecipientNotFound" NDR and moderation acceptance email fails in Exchange Online
4521831 Exchange Online deprecating Basic Authentication
4550577 New resources for moving to Modern Authentication