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dfsdiag testsites

Checks the configuration of active directory Domain Services (AD DS) sites by verifying that servers that act as namespace servers or folder (link) targets have the same site associations on all domain controllers. Windows commands reference

On Windows

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Windows

from the Windows commands reference, CC BY 4.0
dfsdiag /testsites </machine:<server name>| /DFSpath:<namespace root or DFS folder> [/recurse]> [/full]

To check the site associations on machine\MyServer, type

dfsdiag /testsites /machine:MyServerIdentify
/machineThe name of the server on which to verify the site association. Windows commands reference

To check a Distributed File System (DFS) folder to verify the site association, along with verifying that AD DS and the registry of the server contain the same site association information, type

dfsdiag /TestSites /DFSpath:\\contoso.com\namespace1\folder1 /fullIdentify
/DFSpathThe namespace root or Distributed File System (DFS) folder (link) with targets for which to verify the site association. Windows commands reference
/fullVerifies that AD DS and the registry of the server contain the same site association information. Windows commands reference

To check a namespace root to verify the site association, along with enumerating and verifying the site associations for all folder targets under the specified namespace root, and verifying that AD DS and the registry of the server contain the same site association information, type

dfsdiag /testsites /DFSpath:\\contoso.com\namespace2 /recurse /fullIdentify
/DFSpathThe namespace root or Distributed File System (DFS) folder (link) with targets for which to verify the site association. Windows commands reference
/recurseEnumerates and verifies the site associations for all folder targets under the specified namespace root. Windows commands reference
/fullVerifies that AD DS and the registry of the server contain the same site association information. Windows commands reference
/machine:<server name>The name of the server on which to verify the site association.
/DFSpath:<namespace root or DFS folder>The namespace root or Distributed File System (DFS) folder (link) with targets for which to verify the site association.
/recurseEnumerates and verifies the site associations for all folder targets under the specified namespace root.
/fullVerifies that AD DS and the registry of the server contain the same site association information.