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"Missing Mapi32.dll:239" Error Message Occurs When You Start Outlook

This article was previously published under Q166757
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
When you start Microsoft Outlook 97, you may receive the following errormessage:
Outllib.dll is linked to a missing export Mapi32.dll:239
Outlook Setup did not properly update the Mapi32.dll file, or an incorrectversion of the Mapi32.dll file is located in a directory other than yourdefault Windows\System directory.
To resolve this issue, search for and rename extra Mapi32.dll files:
  1. Quit all running programs.
  2. Click Start on the Windows Taskbar.
  3. Point to Find, and then click Files or Folders to search for Mapi32.dll files.
  4. Rename any Mapi32.dll files that are not located in the default Windows\System directory. To do so:
    1. Right-click the file name.
    2. Click Rename on the shortcut menu.
  5. Close the Find dialog box, and then restart Outlook.
If the problem persists, copy a new Mapi32.dll file from your Outlook Setupmedium to your default Windows\System directory:
  1. Quit all running programs.
  2. Click Start on the Windows Taskbar, point to Find, click Files or Folders to search for Mapi32.dll, and then rename the file.
  3. Change the Look in box on the Find dialog box to point to your Outlook Setup medium, and then search for the Mapi32.dll file.
  4. Copy the Mapi32.dll file to one of the following directories on your computer:
    • Windows\System (if you are running Windows 95)

    • Winnt\System32 (if you are running Windows NT)
  5. Right-click the Mapi32.dll file on your computer and click Properties.
  6. Under Attributes, click to select Archive.

Article ID: 166757 - Last Review: 01/19/2007 23:07:32 - Revision: 1.1

  • Microsoft Outlook 97 Standard Edition
  • kberrmsg kbprb KB166757