Multimedia Properties Window Closes When You Click Devices Tab

ID: Q183461

The information in this article applies to:

Microsoft Windows NT Workstation version 4.0
Microsoft Windows NT Server version 4.0
Microsoft Windows NT Server, Enterprise Edition version 4.0

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.

SYMPTOMS

When you click the Devices tab in the Multimedia tool in Control Panel, Multimedia Properties may close, and you may be unable to add, remove, or view the properties of any multimedia device drivers.

CAUSE

This issue can occur if Netscape Communicator Professional Edition is installed on your computer, and the Nsmlaw32.dll file is incorrectly registered in your registry.

RESOLUTION

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. 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" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.

To resolve this issue, use Registry Editor to delete the Nsmlaw32.dll value in the following registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\currentVersion\ drivers.desc

Use Registry Editor to delete the Msacm.nsmlaw value in the following registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\currentVersion\ Drivers32

MORE INFORMATION

These registry values are created only when Netscape Communicator Professional Edition is installed in Microsoft Windows NT version 3.5 or 3.51. When you upgrade Windows NT 3.5 or 3.51 to Windows NT 4.0, these registry values are retained.

The third-party product discussed in this article is manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: navigator gold

Keywords : kb3rdparty kbmm NTSrvWkst
Version : WINNT:4.0
Platform : winnt
Issue type : kbprb