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Windows XP SP2<br />
Outlook 2007<br />
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I tried to quick-click an e-mail's category and Outlook locked up. &nbsp;The e-mail was currently assigned to a category that was not in the Master Category List. &nbsp;I killed the process in task manager, but upon re-opening Outlook, the to-do bar was spazzing and I couldn't do anything inside of Outlook. &nbsp;
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Windows XP SP2
Outlook 2007

I tried to quick-click an e-mail's category and Outlook locked up.  The e-mail was currently assigned to a category that was not in the Master Category List.  I killed the process in task manager, but upon re-opening Outlook, the to-do bar was spazzing and I couldn't do anything inside of Outlook.  

Outlook 2007 To-Do Bar Locked Up

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.