ID: Q180127
The information in this article applies to:
IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.
NOTE: These procedures only apply if you have installed Outlook with the Corporate Workgroup/Other option. This option allows you to use Messaging Application Programming Interface (MAPI) services. To determine your installation type, on the Help Menu click About Microsoft Outlook. In About Microsoft Outlook you should see "Corporate" if you have the Corporate Workgroup installation.
When starting Microsoft Outlook 98 with Microsoft Windows NT 4.0, you may receive the following error message:
The procedure entry point wnetnumcachedpassword could not be located
in the dynamic link library 'MPR.DLL'
The wrong version of the Windows Messaging subsystem of Windows NT is installed on your computer.
1. Rename Mapi32.dll in the \Winnt\System32 directory on your computer.
2. Click the Start button the Windows taskbar, point to Settings, and then
click Control Panel.
4. Double-click Outlook 98.
5. In the Outlook 98 Maintenance Wizard, click Rerun Outlook 98 Setup.
Copy Mapi32.dll from your Microsoft Outlook 98 CD to the \Winnt\System32 directory on your computer. The Mapi32.dll file for Windows NT is located in the \EN\NT4SP3\I386 directory.
As a last resort, remove and reinstall the Windows Messaging subsystem as described in the More Information section of this article.
CAUTION: The procedures below remove your existing mail profile information. You will have to create a new profile after following the steps below.
Follow these steps to remove and reinstall the correct Windows NT Messaging files:
1. On the Windows Taskbar, click Start and point to Settings and then click
Control Panel.
click Microsoft Outlook 98.
If prompted to remove the Windows Messaging component, click Keep.
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows NT 4.0. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the Changing Keys And Values online Help topic in Registry Editor (Regedit.exe). Note that you should make a backup copy of the registry files (System.dat and User.dat) before you edit the registry.
1. On the Windows Taskbar, click Start, point to Settings and then click
Control Panel.
to clear Windows Messaging, and click OK.
click Start and then Run.
5. In the Registry Editor, navigate to the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows Messaging Subsystem
click Export Registry File. Export the key to your Desktop as a
backup and with the key still selected, press the DELETE key to remove
it from the registry.
1. On the Windows Taskbar, click Start point to Settings and then click
Control Panel.
select Windows Messaging. Click Details and make sure all required
components are checked. Click OK and click OK.
1. Insert your Outlook CD into the drive.
2. If Setup does not automatically start, click Start and then Run. In the
Open box, type D:\Setup, where D is the name of your CD drive. Click OK.
Once Outlook is reinstalled, you must create a new profile. For more information on how to set up a profile, please see the following article in the Microsoft Knowledge Base:
Article-ID: Q182159
Title : OL98: (CW) User Profiles and Information Services
For more information on Windows NT errors with MPR.DLL, please see the following article in the Microsoft Knowledge Base:
Article-ID: Q163211
Title : XCLN: Setup:WNetEnumCachedPasswords could not be located
Keywords : kberrmsg kbdta StpMaint StpErr
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbprbLast Reviewed: April 16, 1999