Recover Deleted items in Exchange online (Microsoft office 365)

  In Exchange online we provide 3 layers of Recovery so that messages can be recovered Deleted Items Folder Recover Deleted Items Folder Purges Folder     Deleted Items Folder When a mail is deleted(normal Delete not shift Delete) its moved to Deleted Items folder and its present there until, either we manually delete the messages from there or its deleted automatically as per the Retention Policy of the Organization(default value is 30 days)   Recover Deleted Items Folder   When a mail is Shift deleted(hard deleted), or deleted from Deleted items or removed from deleted items by the Retention policy, its moved to the Recover Deleted Items Folder and it remains there for next 14 days (can be extended to 30 days).   There are 2 folders under Recovery Deleted Items Deleted Folder(its not the normal Deleted folder in the mailbox) Purges Folder    When the mail is present in Recovery Deleted Items(Deleted folder) i

Error - AttributeValueMustBeUnique in Azure AD connect sync

My customer had already created accounts in office 365 and managing them in Azure, however due to some changes in business they wanted to sync AD with Azure to sync Password and Manage Identity form AD.

Solution - Deploy Azure AD connect on ADDC, and post that it will do a Soft Match.

However there were error with some users, their identities did not sync and their status still reflected as Azure AD.

Error - 

Unable to update this object because the following attributes associated with this object have values that may already be associated with another object in your local directory services: [ProxyAddresses;].  Correct or remove the duplicate values in your local directory.  Please refer to for more information on identifying objects with duplicate attribute values.

Tracking Id: b8367c95-ae67-46e1-xxxx-xxxxxxxxxx


I tried to do a Hard match following the article - 

This did not helped 

From the Azure AD connect health wizard took Object ID of On-Prim AD  and tried to Map it against the Azure user 

Set-MsolUser -UserPrincipalName -objectId "1xxxxxxxxxxxxxxxxx=="

Ran the Azure AD connect sync - Did not helped

From the same place (AAD connect health page took Source Anchor
of AD object and Tried to map it 

Set-MsolUser -UserPrincipalName -ImmutableId "1xxxxxxxxxxxxxxxxx=="

This time it was successful 


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