Microsoft KB Archive/289856

= The User Name Mapping Service May Not Be Updated After the Default Cache Limit Is Reached =

Article ID: 289856

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows Services for UNIX 2.0 Standard Edition

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This article was previously published under Q289856



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
The User Name Mapping service that is used by Server for NFS may not be updated after the default cache-update limit is reached and users that have been added recently to the computer may not be able to access network file system (NFS) services.



CAUSE
This problem can occur because Server for NFS ignores the default cache-update settings in the registry for updating the User Name Mapping service. The following registry key holds the settings:

HKEY_LOCAL_MACHINE\Software\Microsoft\Server For NFS Mapping\CurrentVersion

Registry Value: CacheRefresh

Data Type: DWORD

Range: 300 to 86,400 seconds (5 minutes to 24 hours)

Default: 1,800 seconds (30 minutes)

If you change this registry key, there is no effect upon the User Name Mapping service because the settings are completely ignored.



RESOLUTION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To work around this problem, use either of the two methods:  Restart the server. Stop and restart both Server for NFS and the User Name Mapping service:  Start the Services for UNIX Administration tool. Right-click Server for NFS, and then click Stop. When the service has stopped, click the start option from the same menu to start the service. Repeat the same process for the User Name Mapping service. </ul>

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: SFU

Keywords: kbbug kbnofix kbunixservice KB289856

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