Microsoft KB Archive/174843

Knowledge Base

OL97: Error Message: Outllib.dll is Linked to Missing Export Mapi32.dll

Article ID: 174843

Article Last Modified on 1/20/2007

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APPLIES TO

• Microsoft Outlook 97 Standard Edition

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This article was previously published under Q174843

SYMPTOMS

When you start Microsoft Outlook 97 you receive the following message

The Outllib.dll file is linked to missing export Mapi32.dll:36.

followed by:

A device attached to the system is not functioning.

If you try to check your Windows Messaging Profile properties in Control Panel, when you double-click the Mail and Fax icon (or Mail icon if you do not have fax services installed), you receive the following error:

You need more memory or system resources. Close some windows and try again.

CAUSE

When you installed Microsoft Internet Explorer 4.0 and Microsoft Outlook Express, you selected the option to make Outlook Express the default Simple MAPI client.

NOTE: In some cases, a corrupt Mapi32.dll file has caused this problem.

RESOLUTION

Do not use Outlook Express as your default Simple MAPI client.

- or -

Find all instances of Mapi32.dll, rename each, and replace the Mapi32.dll file in your System folder.

To Reset Your Default Simple MAPI Client

1. Start Outlook Express.
2. On the Tools menu, click Options.
3. Click the General tab, then click to clear "Make Outlook Express my Default Simple MAPI client."
4. Restart Windows.

To Rename and Replace Your Mapi32.dll File

1. Right click on the Mapi32.dll file in your Windows\System or Windows\System32 folder.
2. Click Rename on the Shortcut menu.
3. Type Mapi32.old as the new name for the file.
4. Copy the Mapi32.dll from the Office\Wms\Win95 or Office\Wms\WinNT folder of your Office 97 setup compact disc, into your Windows\System or Winnt\System32 folder.
   

If you use the Small Business Edition of Office, copy the Mapi32.dll from the Outlook\Office\Wms\Win95 folder of your Office setup CD into your Windows\System or Winnt\System32 folder.

1. In the Windows Explorer, click the file you copied to your hard drive, and on the File menu, click Properties.
2. Click to clear the Read-Only check box, click to select the Archive check box, and click OK.
3. Close the Explorer.

NOTE: Mapi32.dll is a system file. If you do not see this file on your CD-ROM, click the Folder Options on the View menu of Windows Explorer, and then under the View tab's Advanced Settings, click the radio button to select "Show all files" for Hidden files.

WORKAROUND

Steps to Reproduce Problem

If you are using Outlook Express 4, follow these steps:

1. Start Outlook Express.
2. On the Tools menu, click Options.
3. Click the General tab, and then click to select the Make Outlook Express my Default Simple MAPI client check box.
4. Click OK, and then click OK to close the Options dialog box.

If you are using Outlook Express 5, follow these steps:

1. Start Outlook Express.
2. On the Tools menu, click Options.
3. Click the General tab, and then click Make Default under the Default Messaging Programs section.
4. Click OK to close the Options dialog box.

REFERENCES

For additional information about the "Outllib.dll file is linked to missing export Mapi32.dll:36" error message, while using Eudora Pro, click the article number below to view the article in the Microsoft Knowledge Base:

163750 OL97: Outlook Running with Eudora Pro May Cause Errors

Additional query words: OE

Keywords: kberrmsg kbprb KB174843

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