Microsoft DFSN reference: Creates a folder in a DFS namespace. The syntax and selected example below are adapted from the pinned Windows Server 2025 reference. Module availability, target configuration and delegated permissions determine whether it can run in your environment. Documentation and parameter text: Microsoft, CC BY 4.0; formatting adapted by Cmdlet World. No execution testing is claimed.
Use an account with the target resource permissions documented for New-DfsnFolder. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Supported environments
Windows / DFSN · Windows Server 2025 documentation; feature/module prerequisites apply
Parameters
-AsJob
Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete. The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet. For more information about Windows PowerShell background jobs, see about_Jobs.
-CimSession
Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.
-Confirm
Prompts you for confirmation before running the cmdlet.
-Description
Specifies a description for a DFS namespace folder.
-EnableInsiteReferrals
Indicates whether a DFS namespace server provides a client only with referrals that are in the same site as the client. If this value is $true, the DFS namespace server provides only in-site referrals. If this value is $false, the DFS namespace server provides in-site referrals first, then other referrals.
-EnableTargetFailback
Indicates whether a DFS namespace uses target failback. If a client attempts to access a target on a server and that server is not available, the client fails over to another referral. If this value is $true, once the first server becomes available again, the client fails back to the first server. If this value is $false, the DFS namespace server does not require the client to fail back to the preferred server.
-Path (required)
Specifies a path for the folder. This path must be unique. This path cannot be the name of an existing DFS namespace folder.
-ReferralPriorityClass
Specifies the target priority class for a DFS namespace folder. Target priority offers you the ability to classify and rank in-site targets. You can specify targets to receive the highest or lowest preference, and you can divide the remaining targets based on their site cost for a DFS client to connect to them. The acceptable values for this parameter are: - GlobalHigh - The highest priority class for a DFS target. Targets assigned this class receive global preference. - SiteCostHigh - The highest site cost priority class for a DFS target. Targets assigned this class receive the most preference among targets of the same site cost for a given DFS client. - SiteCostNormal - The middle or normal site cost priority class for a DFS target. - SiteCostLow - The lowest site cost priority class for a DFS target. Targets assigned this class receive the least preference among targets of the same site cost for a given DFS client. - GlobalLow - The lowest level of priority class for a DFS target. Targets assigned this class receive the least preference globally.
-ReferralPriorityRank
Specifies the priority rank, as an integer, for a target in the DFS namespace. Lower values have greater preference. A value of zero (0) is the greatest preference.
-State
Specifies the state of the DFS namespace folder. The acceptable values for this parameter are: - Online - Offline Clients do not receive referrals for a DFS namespace folder that is offline.
-TargetPath (required)
Specifies a path for a target for the DFS namespace folder.
-TargetState
Specifies the state of the DFS namespace folder target. The acceptable values for this parameter are: - Online - Offline Clients do not receive referrals for a DFS namespace folder target that is offline.
-ThrottleLimit
Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.
-TimeToLiveSec
Specifies a TTL interval, in seconds, for referrals. Clients store referrals to targets for this length of time. The default TTL interval for folder referrals is 1800 seconds (30 minutes).
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
Prerequisites
Windows with the DFSN module and the Windows feature or management tools that provide it. Confirm target connectivity and version compatibility using the linked Microsoft reference.
Security considerations
This cmdlet changes system state. Review every target and parameter in the official reference, test outside production, and prepare an appropriate backup or rollback. Do not execute the example automatically.
This command creates a folder called LegacySoftware in the \\Contoso\AccountingResources namespace. The folder target is \\Contoso-FS\AccountingLegacy. The command enables target failback for the folder. The command includes a description for the new folder. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.