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If you read and close an e-mail message that is contained in a public folder in Microsoft Office Outlook 2003, the e-mail message is not changed from unread to read.
This problem may occur when you run Outlook 2003 in Cached Exchange Mode.
This problem was first fixed in a hotfix that is now contained in a service pack. If you installed the latest Office 2003 service pack, you do not have to install the hotfix.
Service pack information
This problem is corrected in Office 2003 Service Pack 2.
To resolve this problem, obtain the latest service pack for Office 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
870924 How to obtain the latest service pack for Office 2003
How to obtain the hotfix
This issue is fixed in the Outlook 2003 post-Service Pack 1 Hotfix Package that is dated September 9, 2004. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
839647 Description of the Outlook 2003 post-Service Pack 1 hotfix package: September 9, 2004
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Office 2003 Service Pack 2.