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Outlook not connecting to Exchange Online mailboxes
If you find that some Outlook clients stopped connecting to the Exchange Online mailbox but OWA and ActiveSync is still connecting then check if modern authentication has been disabled for your O365 tenant To check run: Get-OrganizationConfig | Format-Table Name,OAuth* -AutoIf you find it is set to False and all your Outlook clients are 2013 or newer then enable it by running:Set-OrganizationConfig -OAuth2ClientProfileEnabled $trueYour disconnected users should start connecting within a few minutes.
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Unable to see remote mailbox on the on premises Exchange servers but can see it in Exchange Online
We’ve had a few instances where a user could not receive mail into their Exchange Online mailbox. Upon investigation we noted the onmicrosoft.com address is the primary SMTP address for the user and that the remote mailbox object is not available in Exchange on premises. To resolve this do the following: Open Active Directory Users and Computers (dsa,msc from start -> run) Click on View -> Advanced Features Do a search for the user who has the issue as per above Right click on the user and choose properties Click on Object and make a note of the path Close the search you made. Now navigate in Active Directory Users…
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Moving an on premise mailbox to Office 365 gives the error “Transient error StoragePermanentException has occurred. The system will retry (6/640).”
One of my colleagues battled to migrate an on premise Exchange 2010 mailbox to Office 365. After trying to repair the mailbox and numerous other things he still received the below error: Transient error StoragePermanentException has occurred. The system will retry (6/640). Eventually he appended the -SkipMoving:FolderRestrictions to the New-MoveRequest cmdlet and managed to migrate the user’s mailbox to Office 365.
