Office 365 – Unable to permanently remove email in a full mailbox

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If a mailbox is in Litigation Hold, the hold needs to be removed before mails can be removed.

Example:
GA Account: [email protected]
User’s Mailbox: [email protected]
Allocated Quota: 99GB
Current usage: 100.1GB

1.  $SccSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.compliance.protection.outlook.com/powershell-liveid/ -Credential $credential -Authentication "Basic" -AllowRedirection

2.  Import-Module ExchangeOnlineManagement

3.  Connect-IPPSSession -UserPrincipalName [email protected]

4.  Get-ComplianceCase

5.  New-ComplianceSearch -Name "UserMails" -ExchangeLocation "[email protected]"

6.  Get-ComplianceSearch -Identity 'UserMails' | Format-List

7.  Start-ComplianceSearch -identity "UserMails"

8.   Get-ComplianceSearch
- Wait for status to be "Completed"

9.   New-ComplianceSearchAction -SearchName "UserMails" -Purge -PurgeType HardDelete

10.  Get-ComplianceSearchAction
- Wait for status to be "Completed"

11. Remove-ComplianceSearchAction -Identity "UserMails_Purge"

12. Each action will only remove 10 items. Repeat 9 to 11 until desired reduction of storage is accomplished.

References:

  • https://www.reddit.com/r/Office365/comments/1fz7jp2/new_purview_portal_delete_messages_from_content/
  • https://learn.microsoft.com/en-us/powershell/module/exchange/new-compliancesearch?view=exchange-ps
  • https://learn.microsoft.com/en-us/powershell/module/exchange/new-compliancesearchaction?view=exchange-ps
  • https://learn.microsoft.com/en-us/purview/ediscovery-delete-items-in-the-recoverable-items-folder-of-mailboxes-on-hold?view=o365-worldwide
  • https://learn.microsoft.com/en-us/purview/ediscovery-delete-items-in-the-recoverable-items-folder-of-mailboxes-on-hold?view=o365-worldwide

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