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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
You receive an encrypted e-mail message, or you click an encrypted e-mail message in Microsoft Office Outlook 2007. However, the preview pane remains blank. Additionally, Outlook 2007 appears to stop responding. Only after a longer than expected time, you receive the following message in the preview pane:
This item cannot be displayed in the Reading Pane. Open the item to read its contents.
How to obtain the hotfix
This issue is fixed in the Outlook 2007 Hotfix Package that was released on February 7, 2008. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
948716 Description of the Outlook 2007 hotfix package: February 7, 2008
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
To enable this hotfix, follow these steps:
Exit Outlook 2007.
Start Registry Editor.
In Windows Vista, click Start, type regeditin the Start Search box, and then press ENTER.
If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
In Windows XP, click Start, click Run, type regedit, and then click OK.
Locate and then click the following registry subkey: