Messages aren't automatically moved to a user's archive mailbox after you create a retention policy in Exchange Online for Office 365

Article ID: 2627729 - View products that this article applies to.

Not sure what release of Office 365 you're using? Go to the following Microsoft website:
Am I using Office 365 after the service upgrade?
(http://office.microsoft.com/redir/HA103982331.aspx)
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PROBLEM

In Microsoft Exchange Online for Microsoft Office 365, you use the New-RetentionPolicy Windows PowerShell cmdlet to create a retention policy that moves email messages from a user's' mailbox to the user's archive mailbox. For example, you create a retention policy by using the following series of PowerShell cmdlets. 
New-RetentionPolicyTag "ArchiveTag" –Type All –RetentionEnabled $true –AgeLimitForRetention 90 –RetentionAction MoveToArchive 

New-RetentionPolicy "CorpPolicy" –RetentionPolicyTagLinks "ArchiveTag" 

Set-Mailbox <mailbox> -RetentionPolicy "CorpPolicy" 

Start-ManagedFolderAssistant –Identity <mailbox>

However, after you create the retention policy, the policy doesn't automatically run. That is, messages that have reached the age limit that's set in the policy aren't automatically moved to the user's archive mailbox. 
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CAUSE

This issue occurs if the size of the mailbox in Exchange Online is less than 10 megabytes (MB). The retention policy runs automatically one time every seven days for mailboxes that are larger than 10 MB. However, the retention policy doesn't automatically run for mailboxes that are smaller than 10 MB. 
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WORKAROUND

For mailboxes that are smaller than 10 MB, manually run the Start-ManagedFolderAssistant –Identity <mailbox> cmdlet every time that you want to move messages to the archive.
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MORE INFORMATION

For more information about how to set up and manage retention policies in Exchange Online, go to following Microsoft website:
Set Up and Manage Retention Policies in Exchange Online with Windows PowerShell
(http://technet.microsoft.com/en-sg/exchangelabshelp/gg271153#defaulttags)
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Still need help? Go to the Office 365 Community
(http://community.office365.com/)
website.
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Properties

Article ID: 2627729 - Last Review: May 31, 2013 - Revision: 8.0
Applies to
  • Microsoft Office 365 for enterprises (pre-upgrade)
  • Microsoft Office 365 for small businesses  (pre-upgrade)
  • Microsoft Office 365 for education  (pre-upgrade)
  • Microsoft Exchange Online
Keywords: 
o365 o365a o365m o365062011 pre-upgrade o365e o365p o365022013 after upgrade KB2627729
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