Why do I receive the error message "The add-in 'C:\WINDOWS\SYSTEM\Xcolext' could not be installed" when I start Microsoft Outlook 2000?

A. If you upgrade from Windows 98 to Windows XP, you might receive an error message when you start Outlook 2000. To resolve this problem, perform the following steps:

  1. Start Outlook.
  2. From the Tools menu, select Options.
  3. Select the Other tab.
  4. Click Advanced Options.
  5. Click Add-In Manager.
  6. Clear the XTNDConnectPC check box, then click OK to close all dialog boxes.
  7. Restart Outlook.

If you continue to receive the error message, close Outlook, delete the extend.dat file from your profile (e.g., C:\documents and settings\<user name>\local settings\application data\microsoft\outlook), then restart Outlook.

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