Add-PSSnapin Microsoft.SharePoint.PowerShell #Add the SP snapin $webApp = Get-SPWebApplication http://MyUrl/ # Main SP web app # Optional: clear existing domains # $webApp.PeoplePickerSettings.SearchActiveDirectoryDomains.Clear() # Optional: clear existing domains # $webApp.Update() # Set an encryption key to encrypt/decrypt pwd $key = ConvertTo-SecureString "Password123" -AsPlainText -Force [Microsoft.SharePoint.SPSecurity]::SetApplicationCredentialKey($key) $userpwd = ConvertTo-SecureString "" -AsPlainText -Force # Define AD search object to add to web app $ADSearchObj = New-Object Microsoft.SharePoint.Administration.SPPeoplePickerSearchActiveDirectoryDomain $ADSearchObj.DomainName = "domain.com" $ADSearchObj.ShortDomainName = "domain" $ADSearchObj.IsForest = $false # True if forest $ADSearchObj.LoginName = "DomainUser" $ADSearchObj.SetPassword($userpwd) # Add AD search object to the main SP web app $webApp.PeoplePickerSettings.SearchActiveDirectoryDomains.Add($ADSearchObj) $webApp.Update()