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

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Article ID: 271183 - View products that this article applies to.
This article was previously published under Q271183
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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.

Properties

Article ID: 271183 - Last Review: October 31, 2006 - Revision: 1.1
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
Keywords: 
kberrmsg kbnetwork kbprb KB271183

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