Microsoft KB Archive/271183

= Error Message: System Error 85 Has Occurred. The Local Device Name Is Already in Use =

Article ID: 271183

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT 4.0 Service Pack 1
 * Microsoft Windows NT 4.0 Service Pack 2
 * Microsoft Windows NT 4.0 Service Pack 3
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6
 * Microsoft Windows NT 4.0 Service Pack 6a

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This article was previously published under Q271183



SYMPTOMS
When your logon script runs, it may not work, and you may receive the following error message:

System error 85 has occurred. The local device name is already in use.



CAUSE
This issue can occur if the drive letter that is being mapped by the net use command is already mapped in the user's properties.



RESOLUTION
To resolve this issue, change the drive letter mapping in the logon script or in the home drive to correct the overlap of drive letters.



MORE INFORMATION
The mapping of the home drive is processed before the logon script runs. The home drive maps the drive letter successfully, and then the logon script attempts to map the drive letter and is unable to do so. The net helpmsg 85 command generates the following error message:

The local device name is already in use.

Additional query words: fail homedrive resource

Keywords: kberrmsg kbnetwork kbprb KB271183

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