Campus Active Directory - Connect to Another Forest with PowerShell

PowerShell will automatically create a PSDrive for the Active Directory domain that the client is a member of. An additional PSDrive can be created for a different domain in another forest.

The following command will create a PSDrive for a different domain than the one the host is joined to.
New-PSDrive -Name <PSDrive-Name> -PSProvider ActiveDirectory -Server "<Domain-Controller>" -Scope Global c-credential (Get-Credential "<User-Name>") -root "//RootDSE/"
The "-Scope Global" switch is required if you run this cmd-let from a script. The new PSDrive can be used in several ways. Lets say that you want the to manage objects in with PowerShell from a host joined to the production AD forest. The following command will create a PSDrive named "ADTEST" that will be connected to the "" domain.
New-PSDrive -Name ADTEST -PSProvider ActiveDirectory -Server "" -Scope Global -credential (Get-Credential "ADTEST\jsmith-ou") -root "//RootDSE/"
To use this PSDrive you can "cd" to the "ADTEST" PSDrive and then run the Active Directory modules as normal:
PS C:\> cd ADTEST:
PS C:\> Get-ADDomain
The second method is to provide the "server" switch with the name of the domain controller:
PS C:\> Get-ADDomain -server ""
The following code will check to see if the drive exists prior to attempting creation of the new PSDrive
if (-not(Get-PSDrive TEST)) {
    New-PSDrive -Name ADTEST -PSProvider ActiveDirectory -Server "" -Scope Global -credential (Get-Credential "ADTEST\jsmith-ou") -root "//RootDSE/"
    "Drive already exists"

Note: Starting on April 1st, 2016, will change to

Keywords:campus active directory powershell psdrive   Doc ID:34832
Owner:Marc T.Group:Campus Active Directory
Created:2013-10-28 08:11 CSTUpdated:2016-04-11 09:34 CST
Sites:Campus Active Directory
Feedback:  10   5