Forum Discussion
David Wilson
Aug 16, 2017Brass Contributor
O365 Online Archiving Not Working
 We migrated users to O365 last week.  And for the most part everything is good.  All using E3 licenses  But one users mailbox is not archiving.     I've confirmed that is OWA for the user  right clic...
slawrance
Jun 21, 2021Copper Contributor
I had the same issue this week and thanks to you all I also found the problem was due to the mailbox having the retention hold enabled even though it showed disabled in EAC. Can confirm this site had used the Office365 PST import utility too.
To check the mailbox:
Get-Mailbox "Michael Allen" | Select RetentionHoldEnabled
To disable retention hold:
Set-Mailbox "Michael Allen" -RetentionHoldEnabled $false
Start the Managed Folder Assistant
Start-ManagedFolderAssistant -Identity "Michael Allen"
To check the mailbox:
Get-Mailbox "Michael Allen" | Select RetentionHoldEnabled
To disable retention hold:
Set-Mailbox "Michael Allen" -RetentionHoldEnabled $false
Start the Managed Folder Assistant
Start-ManagedFolderAssistant -Identity "Michael Allen"
Joshua Bines
Dec 02, 2021Iron Contributor
BishopstonIT slawrance Quite right on the PST Import here's the documentation.
After PST files are imported, the retention hold setting for the mailbox is turned on for an indefinite duration. This means that the retention policy assigned to the mailbox won't be processed until you turn off the retention hold or set a date to turn off the hold. Why do we do this? If messages imported to a mailbox are old, they might be permanently deleted (purged) because their retention period has expired based on the retention settings configured for the mailbox. Placing the mailbox on retention hold gives the mailbox owner time to manage these newly imported messages or give you time to change the retention settings for the mailbox. See the More information section in this topic for suggestions about managing the retention hold.
https://docs.microsoft.com/en-us/microsoft-365/compliance/use-network-upload-to-import-pst-files?view=o365-worldwide
After PST files are imported, the retention hold setting for the mailbox is turned on for an indefinite duration. This means that the retention policy assigned to the mailbox won't be processed until you turn off the retention hold or set a date to turn off the hold. Why do we do this? If messages imported to a mailbox are old, they might be permanently deleted (purged) because their retention period has expired based on the retention settings configured for the mailbox. Placing the mailbox on retention hold gives the mailbox owner time to manage these newly imported messages or give you time to change the retention settings for the mailbox. See the More information section in this topic for suggestions about managing the retention hold.
https://docs.microsoft.com/en-us/microsoft-365/compliance/use-network-upload-to-import-pst-files?view=o365-worldwide