OL2002: Error Message: "Outlook Express 4.01 Required" When You Start Outlook

If you start Outlook 2002 on a computer that is running Microsoft Windows 98, you may receive the following error message: If you start Outlook 2002 on a computer that is running Microsoft Windows NT 4.0, you may receive the following error message:

This behavior occurs because the Microsoft Outlook Express files that Outlook 2002 requires are missing or have been removed if Outlook Express was uninstalled.

Use the information is this section to resolve this behavior.

How to Reinstall Outlook Express 5 By Using the Original Release of Windows 98

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click the Add/Remove Programs icon.
3. Click Microsoft Internet Explorer 5 and Internet Tools, and then click the Add/Remove button.
4. Click to select the Outlook Express check box even if it is bold.

How to Reinstall Outlook Express 5 By Using Microsoft Windows 98 Second Edition

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click the Add/Remove Programs icon.
3. Click the Windows Setup tab.
4. Click to clear then Outlook Express check box, and then restart your computer.
5. Follow steps 1 through 3 again, and then click to select the Outlook Express check box.

How to Reinstall Outlook Express 5 By Using Windows NT 4.0

1. Insert the Office 2002 or Outlook 2002 CD-ROM.
2. Locate the \FILES\OSP\1033\IE5\EN folder on the CD-ROM.
3. Run the IE5Setup.exe file.