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Unable to soft delete some messages after installing Exchange 2010 SP2 RU6 or SP3
Article ID: 2822208 - View products that this article applies to.
You may experience the following symptoms with either Outlook in Online mode or Outlook Web App (OWA), when the mailbox is located on a server where Exchange 2010 Service Pack 2 RU6 or Exchange 2010 Service Pack 3 has been installed:
Note: This issue does not happen with messages sent by a user instead of an application, or plain messages without attachments.
This issue can occur after Exchange 2010 Service Pack 2 RU6 or Exchange 2010 Service Pack 3 is installed.
Workaround 1: Hard delete the message instead of soft deleting.
To hard delete email using Microsoft Outlook, select the message and then press SHIFT+DELETE to delete it.
Workaround 2: Use cached mode for Outlook.
When using the cached mode of Outlook, the message can be soft deleted.
Configure Cached Exchange Mode in Outlook 2010
For Exchange 2003-2007 see:
How can I recover items that I have "hard deleted" in Outlook?
For Exchange 2010:
Understanding Recoverable Items: Exchange 2010 Help
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.