Additionally, if you try to move an Exchange 2013 mailbox to an Exchange 2010 mailbox on-premises, you’ll receive the following warning message:
+CategoryInfo: InvalidArgument: (:MailboxOrMailUserIdParameter) [New-MoveRequest], UnableToMoveUCS…nlevelException
+FullyQualifiedErrorId: [Server=BN1PR04MB219,RequestId=e8740227-f060-4dd6-ac29-98aca24df8da,TimeStamp=7/24/2013 7:09:05 PM B1CB8EAD,Microsoft.Exchange.Management.RecipientTasks.NewMoveRequest+PSComputerName: pod51041psh.outlook.com
Since then, this feature was disabled because by default, and Skype for Business Online contact lists are now managed by Skype for Business Online. However, some users might still be using the Exchange UCS and experience no issues or problems at all. If their mailbox is unavailable through Exchange Web Services (EWS) at any time, they won’t be able to change or even access their contact lists. If this becomes an issue, you may want to migrate your contacts back to Skype for Business Online.
If you're experiencing this issueCheck the Lync Configuration Information screen. To do this, follow these steps:
- Press and hold the Ctrl key, and then right-click the Lync icon in the notification area.
- Select Configuration Information.
- If the mailbox is inaccessible, you should see Exchange connection Down next to UCS Connectivity State.
Then, check the Personal Information ManagerMake sure that the Personal information manager is set to Microsoft Exchange or Microsoft Outlook in Lync. To check this setting, open Lync, click the gear icon, and then click Personal.
Then, check the DNS configuration for EWS ConnectivityNext, if you're using a custom domain in Office 365, and the user has an Exchange Online mailbox, but the contact list is still unavailable, verify that all the necessary Domain Name System (DNS) records for Exchange Online Autodiscover are present. Lync uses the Exchange Autodiscover service to connect to the user’s mailbox. If the Autodiscover service isn’t working correctly, Lync won’t be able to pull the user’s contact list from the Exchange Unified Contact Store (UCS). For more information about how to verify the Exchange Autodiscover service, see "Method 2" of the Solution section in the following Microsoft Knowledge Base article:
If the mailbox was accidentally disconnected or unlicensedYou have 30 days to reconnect the mailbox without any consequences. The user’s mail, settings, and contact list will be restored a short time after you reconnect the mailbox. After 30 days, the user’s data is not recoverable.
If the mailbox disconnect was intentional and you have to restore the user’s contact list for LyncTo restore the user’s contact list to the Lync Server, you have to temporarily reconnect the user’s mailbox and then run the Skype for Business OnlineRemote PowerShell cmdlet Invoke-CsUcsRollback to have the user’s contact list migrated from his or her Exchange mailbox to the Lync server.
For information about how to restore deleted users or reconnect mailboxes, go to the Office 365 help topic:
If you want to migrate your contacts back toSkype for Business OnlineConfirm that the user is enabled for UCS. Press Ctrl while you right-click the Lync icon in the notification area, and then click Configuration Information.
- If the Value for Contact List Provider is UCS, then the user’s contacts are stored in the Exchange Unified Contact Store. Run the Skype for Business Online Remote PowerShell cmdlet Invoke-CsUcsRollback to migrate the user’s contacts back to the Lync server.
- If the Value for Contact List Provider is NOT UCS, then there’s no need to migrate your contacts back. But if you still can't access your contact list, you may have to do additional troubleshooting. For more information, go to the following Microsoft Knowledge Base article: 2435699 Contacts in Skype for Business Online appear offline or aren't searchable in the address book