COMMAND EVERYTHING.
Modifies an Active Directory Domain Services authentication policy silo object.
Microsoft ActiveDirectory reference: Modifies an Active Directory Domain Services authentication policy silo object. 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 Set-ADAuthenticationPolicySilo. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Windows / ActiveDirectory · Windows Server 2025 documentation; feature/module prerequisites apply
-Add- Specifies a list of values to add to an object property. Use this parameter to add one or more values to a property that cannot be modified using a parameter. To identify an attribute, specify the Lightweight Directory Access Protocol (LDAP) display name defined for it in the Active Directory Domain Services schema. Specify the attribute and the value of the attribute in the following format: @{'AttributeLDAPDisplayName'=value}. To specify multiple values for an attribute, specify a comma separated list the values for the display name. You can specify values for more than one attribute by using semicolons to separate attribute value pairs. When specifying the *Add*, *Remove*, *Replace*, and *Clear* parameters together, the operations are performed in the following order: - Remove - Add - Replace - Clear
-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.
-Clear- Specifies an array of object properties that are cleared in the directory. Use this parameter to clear one or more values of a property that cannot be modified using a parameter. To modify an object property, you must specify the LDAP display name. You can modify more than one property by specifying a comma-separated list. When specifying the *Add*, *Remove*, *Replace*, and *Clear* parameters together, the operations are performed in the following order: - Remove - Add - Replace - Clear
-ComputerAuthenticationPolicy- Specifies the authentication policy that applies to computer accounts.
-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.
-Description- Specifies a description for the object. This parameter sets the value of the description property for the object. The LDAP display name (ldapDisplayName) for this property is description.
-Enforce- Indicates whether the authentication policy is enforced. Specify $True to set the authentication policy to enforced. Specify $False to set the authentication policy to not enforced.
-Identity (required)- Specifies an Active Directory Domain Services authentication policy silo object. Specify the authentication policy silo object in one of the following formats: - A distinguished name - GUID - 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.
-Instance (required)- Specifies a modified copy of an ADAuthenticationPolicySilo object to use to update the actual ADAuthenticationPolicySilo object. When you specify this parameter, any modifications made to the modified copy of the object are also made to the corresponding ADAuthenticationPolicySilo object. The cmdlet only updates the object properties that have changed. When you specify the *Instance* parameter, you cannot specify other parameters that set properties on the object. To get the ADAuthenticationPolicySilo object to use to update the ADAuthenticationPolicySilo on which the cmdlet runs, use the Get-ADAuthenticationPolicySilo cmdlet.
-PassThru- Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.
-ProtectedFromAccidentalDeletion- Indicates whether to prevent the object from being deleted. When this property is set to true, you cannot delete the corresponding object without changing the value of the property. The acceptable values for this parameter are: - $False or 0 - $True or 1
-Remove- Specifies that the cmdlet remove the values of an object property. Use this parameter to remove one or more values of a property that cannot be modified using a cmdlet parameter. To remove an object property, you must specify the LDAP display name. Specify the attribute and the value of the attribute in the following format: @{'AttributeLDAPDisplayName'=value}. To specify multiple values for an attribute, specify a comma separated list the values for the display name. You can specify values for more than one attribute by using semicolons to separate attribute value pairs. When specifying the *Add*, *Remove*, *Replace*, and *Clear* parameters together, the operations are performed in the following order: - Remove - Add - Replace - Clear
-Replace- Specifies a list of values for an object property that replaces the current values. Use this parameter to replace one or more values of a property that cannot be modified using a cmdlet parameter. To modify an object property, you must specify the LDAP display name. Specify the attribute and the value of the attribute in the following format: @{'AttributeLDAPDisplayName'=value}. To specify multiple values for an attribute, specify a comma separated list the values for the display name. You can specify values for more than one attribute by using semicolons to separate attribute value pairs. When specifying the *Add*, *Remove*, *Replace*, and *Clear* parameters together, the operations are performed in the following order: - Remove - Add - Replace - Clear
-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: - Fully qualified domain name - NetBIOS name Directory server values: - Fully qualified directory server name - NetBIOS name - 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
-ServiceAuthenticationPolicy- Specifies the authentication policy that applies to managed service accounts.
-UserAuthenticationPolicy- Specifies the authentication policy that applies to user accounts.
-WhatIf- Shows what would happen if the cmdlet runs. The cmdlet is not run.
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.
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.