Grants permission to join an authentication policy silo.
Active Directory · Risk: High · Documentation Verified
Last verified: 2026-10-26
Microsoft ActiveDirectory reference: Grants permission to join an authentication policy silo. 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 Grant-ADAuthenticationPolicySiloAccess. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Supported environments
Windows / ActiveDirectory · Windows Server 2025 documentation; feature/module prerequisites apply
Parameters
-Account (required)
Specifies the account to which to grant access to the authentication policy silo. Specify the account in one of the following formats: - A distinguished name - A GUID - A security identifier - A SAM account name The cmdlet searches the default naming context or partition to find the object. If two or more objects are found, the cmdlet returns a non-terminating error. You can also use this parameter to specify a variable that contains user, computer, and service account objects.
-AuthType
Specifies the authentication method to use. The acceptable values for this parameter are: - Negotiate or 0 - Basic or 1 The default authentication method is Negotiate. A Secure Sockets Layer (SSL) connection is required for the Basic authentication method.
-Confirm
Prompts you for confirmation before running the cmdlet.
-Credential
Specifies a user account that has permission to perform the task. The default is the current user. Type a user name, such as User01 or Domain01\User01, or enter a PSCredential object, such as one generated by the Get-Credential cmdlet. By default, the cmdlet uses the credentials of the currently logged on user unless the cmdlet is run from an Active Directory Domain Services Windows PowerShell provider drive. If you run the cmdlet in a provider drive, the account associated with the drive is the default. If you specify credentials that do not have permission to perform the task, the cmdlet returns an error.
-Identity (required)
Specifies an ADAuthenticationPolicySilo object. Specify the authentication policy silo object in one of the following formats: - A distinguished name - A GUID - A name This parameter can also get this object through the pipeline or you can set this parameter to an object instance. The cmdlet searches the default naming context or partition to find the object. If the cmdlet finds two or more objects, the cmdlet returns a non-terminating error.
-PassThru
Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.
-Server
Specifies the Active Directory Domain Services instance to which to connect, by providing one of the following values for a corresponding domain name or directory server. The service may be any of the following: Active Directory Lightweight Domain Services, Active Directory Domain Services or Active Directory snapshot instance. Specify the Active Directory Domain Services instance in one of the following ways: Domain name values: - A Fully qualified domain name - A NetBIOS name Directory server values: - A Fully qualified directory server name - A NetBIOS name - A Fully qualified directory server name and port The default value for this parameter is determined by one of the following methods in the order that they are listed: - By using the *Server* value from objects passed through the pipeline - By using the server information associated with the Active Directory Domain Services Windows PowerShell provider drive, when the cmdlet runs in that drive - By using the domain of the computer running Windows PowerShell
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
Prerequisites
Windows with the ActiveDirectory 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.
Examples
Example 1: Grant access to an authentication policy silo to a user account
This command grants access to the authentication policy silo named AuthenticationPolicySilo01 to the user account named User01. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.