Article ID: 2714467 - View products that this article applies to.
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PROBLEM

When Exchange Online users try to recover an email item that was deleted more than 14 days ago, they discover that they can't do so.

CAUSE

By default, the period in which deleted items are available for recovery in Exchange Online is 14 days. After 14 days, these items are no longer available in the Recover Deleted Items folders in Microsoft Outlook or in Microsoft Outlook Web App.

SOLUTION

To increase the deleted item recovery (Single Item Recovery) period for all users from the default 14 days to the 30-day maximum, follow these steps:
  1. Connect to Exchange by using remote PowerShell. For more info about how to do this, see Connect to Exchange Online using remote PowerShell.
  2. In the PowerShell command window, run the following command:
    Get-Mailbox | Set-Mailbox -SingleItemRecoveryEnabled $True -RetainDeletedItemsFor 30 -UseDatabaseRetentionDefaults $False
Note The Single Item Recovery period for Exchange Online in Office 365 Small Busess can't be changed from the default value of 14 days. 

MORE INFORMATION

To recover items that were deleted more than 30 days ago

If you want to recover items for a period of more than 30 days, you must use Litigation Hold.

However, be aware that although Deleted Item retention and Litigation Hold are similar, they are not the same thing.

Specifically, Litigation Hold is an option that is inaccessible to the user. For recovery of deleted items that have aged past 30 days, an Exchange Online admin (who is a member of the Discovery Management Role Group) must perform a discovery search to recover the items.

If you want to implement deleted item recovery for a period of more than 30 days, it's best to use a combination of the following options:
  • Extend deleted item recovery to the maximum value of 30 days to reduce the number of Help desk calls.
  • Implement Legal Hold to cover the timeframe that you want.
For more info about Litigation Hold and other compliance topics in Office 365, see Compliance.

Still need help? Go to the Office 365 Community website.

Properties

Article ID: 2714467 - Last Review: September 12, 2014 - Revision: 9.0
Applies to
  • Microsoft Exchange Online
Keywords: 
o365 o365a o365p o365e o365m o365022013 KB2714467

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