- Some mailboxes show as linked or shared rather than as user mailboxes.
- Repeated mailbox credential prompts in Microsoft Outlook or Outlook Web App (OWA)
- Unexpected delays in, or halted mail flow.
- Problems accessing Public Folders, sometimes resulting in the following error:Cannot expand the folder. Microsoft Exchange is not available. Either there are network problems or the Exchange Server is down for maintenance.
Set-User -Identity useraddress -LinkedMasterAccount $null
Set-User -Identity firstname.lastname@example.org -LinkedMasterAccount $null
This will remove the msExchMasterAccountSID attribute from the user’s account.
If msExchRecipientTypeDetails = 1, then msExchMasterAccountSID should not exist on the account in Active Directory.
For more information on possible values for the msExchRecipientTypeDetails attribute, see the following Office 365 blog post:
O365: Exchange and AD - How msExchRecipientDisplayType and msExchangeRecipientTypeDetails Relate to Your On-Premises
Article ID: 2996202 - Last Review: 13 Jan 2016 - Revision: 1