Article ID: 232480
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:
(https://support.microsoft.com/kb/257824/EN-US/ )OL2000: Differences Between Outlook and Outlook Express
When you attempt to start Outlook Express, you may receive the following error message:
Outlook Express could not be started because MSOE.DLL could not be loaded.
This issue can occur if you uninstall Microsoft Internet Explorer 5 and then reinstall Windows 98 to restore Internet Explorer 4.x. This process does not remove Outlook Express 5.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
To resolve this issue, remove Outlook Express 5, and then reinstall Outlook Express 4.x:
Article ID: 232480 - Last Review: June 19, 2014 - Revision: 4.0