How to Recover deleted mailbox in Exchange online

Procedure to copy  the data from Deleted Mailbox to Active Mailbox.

 

1)      Start Windows PowerShell

Start > search for “PowerShell” > Start Windows PowerShell by clicking on “Run as Administrator”.

2)      Connect the Windows PowerShell to Office 365 Exchange Online . Please execute below command in PowerShell.

$LiveCred = Get-Credential (Supply Exchange Online Admin’s log in credentials in the prompt window)

Set-ExecutionPolicy Unrestricted (Proceed with Y if prompted)

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic -AllowRedirection

Import-PSSession $Session

3)      Verify if the old mailbox is in deleted state.

Get-Mailbox -SoftDeletedMailbox accounts

4)      If the Mailbox is found collect the ExchangeGuid of the deleted Mailbox.

(Get-Mailbox -SoftDeletedMailbox Deleted_User_Alias@domain.com).ExchangeGuid

5)      Collect the ExchangeGuid of the Active Mailbox.

(Get-Mailbox ACTIVE_USER_ALIAS@domain.com).ExchangeGuid

6)      Now copy the data from the deleted mailbox to the new Mailbox.

New-MailboxRestoreRequest -SourceMailbox “Guid of Deleted Mailbox copied from step 4” -TargetMailbox “Guid of Deleted Mailbox copied from step 5”  AllowLegacyDNMismatch -verbose

7)      Monitor the same.

Get-MailboxRestoreRequest

8)      Once it is completed all the data would be moved to the new one.

 


—–Sample with Regular PowerShell —–

1)      Verify the active Mailbox.

Get-Mailbox ACTIVE_USER_ALIAS | FL  Name,Alias,UserPrincipalName,ExchangeGuid,Guid,EmailAddresses,Database

2)      Verified the same in the soft deleted list.

Get-Mailbox -SoftDeletedMailbox Deleted_User_Alias | FL Name,Alias,UserPrincipalName,ExchangeGuid,Guid,EmailAddresses,Database

3)      Collect the data about the mailboxes.

1)      Active Mailbox.

Get-Mailbox ACTIVE_USER_ALIAS | FL Name,Alias,UserPrincipalName,ExchangeGuid,Guid,EmailAddresses,Database
Name              : ACTIVE_USER_ALIAS
Alias             : ACTIVE_USER_ALIAS
UserPrincipalName : ACTIVE_USER_ALIAS@domain.com
ExchangeGuid      : b09181cd-9183-4036-8946-9339dfa27702
Guid              : 28101858-670e-4b47-aedc-7f9cc583a80dEmailAddresses    : {SIP:ACTIVE_USER_ALIAS@domain.com, SMTP:ACTIVE_USER_ALIAS@domain.com, smtp:ACTIVE_USER_ALIAS@domain.com}

2)      Deleted Mailbox.

Get-Mailbox -SoftDeletedMailbox Deleted_User_Alias | FL
Name,Alias,UserPrincipalName,ExchangeGuid,Guid,EmailAddresses,Database
Name              : Deleted_User_Alias
Alias             : Deleted_User_Alias
UserPrincipalName : Deleted_User_Alias@domain.com
ExchangeGuid      : b4dc2e0c-d2ba-4524-9722-dd279b6c6f61
Guid              : a3d02e59-60fd-4bca-b9ca-609c2f792891
EmailAddresses    : {SIP:ecbb89072dda4219a644fab1b054efa6;Deleted_User_Alias@domain.com}

4)      Creating the Mailbox restore request.

New-MailboxRestoreRequest -SourceMailbox b4dc2e0c-d2ba-4524-9722-dd279b6c6f61 -TargetMailbox b09181cd-9183-4036-8946-9339dfa27702 -AllowLegacyDNMismatch -Verbose

5)      Once Request created successfully confirmed the batch completed successfully.

Get-MailboxRestoreRequest | FL Identity,requestguid,Status

See Overview of recover Soft deleted mailbox in Exchange online.

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