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FIX: You receive a "Stop error code 0x00000019" or "Stop error code 0x000000c4" error message when you access NFS resources by using User Name Mapping

When you access network file system (NFS) resources on a client computer that has Client for NFS and User Name Mapping installed, you receive one of the following Stop error messages:

Error message 1
Stop 0x00000019 (parameter1, parameter2, parameter3, parameter4)
Error message 2
Stop 0x000000c4 (parameter1, parameter2, parameter3, parameter4)
Note The parameters in these Stop error messages vary depending on the system's configuration.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To apply this hotfix, you must have Windows Services for UNIX 3.5 installed on the computer.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform
Rpcxdr.sys8.0.1969.6154,52803-Jan-200804:48Not applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 946226 - Last Review: 01/21/2012 00:39:00 - Revision: 2.0

  • Microsoft Windows Services for UNIX 3.5
  • kbautohotfix kbexpertiseadvanced kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe KB946226