"Unable to Create Mapping" Error Message When You Re-create a DFS Share (270580)


The information in this article applies to:

  • Microsoft Windows NT Server 4.0
  • Microsoft Windows NT Server 4.0 SP1
  • Microsoft Windows NT Server 4.0 SP2
  • Microsoft Windows NT Server 4.0 SP3
  • Microsoft Windows NT Server 4.0 SP4
  • Microsoft Windows NT Server 4.0 SP5
  • Microsoft Windows NT Server 4.0 SP6
  • Microsoft Windows NT Server 4.0 SP6a
This article was previously published under Q270580
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

When you try to re-create a DFS share, you may receive the following error message:
Unable to create a mapping
However, you are still able to create new DFS shares after you receive the error message.

CAUSE

This issue can occur if the DFS share is damaged. Note that when this occurs, you may not be able to delete the damaged share.

RESOLUTION

To resolve this issue:
  1. Log on to the Windows NT Server-based computer that hosts the DFS root as an administrator.
  2. Click Start, point to Settings, and then click Control Panel.
  3. Double-click Services.
  4. Click DFS Service, and then click Startup.
  5. Click Disabled, and then click OK.
  6. Quit all programs, and then restart the server.
  7. Log on to the server as an administrator.
  8. Delete the damaged DFS share.
  9. Repeat steps 2-5, but enable the DFS service in step 5.
  10. Restart the server, and then log on as an administrator.
  11. Re-create the DFS share.

MORE INFORMATION

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.

DFS share information is recorded in the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DFSDriver\LocalVolumes

If needed, you can delete orphaned entries.
Modification Type:MajorLast Reviewed:6/11/2002
Keywords:kberrmsg kbnetwork kbprb KB270580
©2002 Microsoft Corporation. All rights reserved.