Article ID: 257238 - Last Review: January 27, 2007 - Revision: 2.1 Outlook Express 5.01 not upgraded on Windows 2000This article was previously published under Q257238 For information about the differences between Microsoft Outlook Express and Microsoft Outlook e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base: 257824
(http://support.microsoft.com/kb/257824/EN-US/
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OL2000: Differences Between Outlook and Outlook Express SYMPTOMS
When you upgrade Microsoft Windows 2000 to Microsoft Internet Explorer 5.5 or Internet Explorer 5.5 Service Pack 1 (SP1), Outlook Express is not upgraded to version 5.5 or Outlook Express 5.5 SP1. RESOLUTION
To resolve this issue, install Windows 2000 SP1, Internet Explorer 5.01 SP1, or Internet Explorer 5.01 Service Pack 2 (SP2), and then install Internet Explorer 5.5 or Internet Explorer 5.5 SP1. MORE INFORMATION
To upgrade Internet Explorer and Outlook Express, follow these steps:
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