DeleteVolumeMountPointW function (fileapi.h)

Deletes a drive letter or mounted folder.


BOOL DeleteVolumeMountPointW(
  [in] LPCWSTR lpszVolumeMountPoint


[in] lpszVolumeMountPoint

The drive letter or mounted folder to be deleted. A trailing backslash is required, for example, "X:" or "Y:\MountX".

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.


Deleting a mounted folder does not cause the underlying directory to be deleted.

If the lpszVolumeMountPoint parameter is a directory that is not a mounted folder, the function does nothing. The directory is not deleted.

In Windows 8 and Windows Server 2012, this function is supported by the following technologies.

Technology Supported
Server Message Block (SMB) 3.0 protocol No
SMB 3.0 Transparent Failover (TFO) No
SMB 3.0 with Scale-out File Shares (SO) No
Cluster Shared Volume File System (CsvFS) No
Resilient File System (ReFS) No

SMB does not support volume management functions. For CsvFs, a new mount point will not be replicated to the other nodes on the cluster.


For an example, see Unmounting a Volume at a Mount Point.


Requirement Value
Minimum supported client Windows XP [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 [desktop apps | UWP apps]
Target Platform Windows
Header fileapi.h (include Windows.h)
Library Kernel32.lib
DLL Kernel32.dll

See also



Mounted Folders


Volume Management Functions