USAGE: Dfsutil /PurgeMupCache is a special problem repair command that should only be executed on the client. The MUP cache ...

USAGE:
Dfsutil /PurgeMupCache is a special problem repair command that should only
be executed on the client. 

The MUP cache keeps information about both DFS and other shares on
the client system. Suppose, you create a non-DFS (e.g SMB) share and
access it before mapping a DFS namespace by the same name on it. 
The MUP cache might still think that the share is served by the previous
provider (SMB) although DFS is the correct provider now.

This command clears the MUP cache so there won't be any confusion 
about the current provider when such names conflict. 

Usage:
dfsutil /PurgeMupCache
    This command does not take any arguments.
    e.g: dfsutil /PurgeMupCache

Notes:
1) Except for a temporary performance hit, this command has
no other adverse effects. 
2) This command does not affect any DFS metadata on disk.
3) If this command isn't executed and the namespace isn't accessed,
the obsolete cache entry will eventually expire anyway.