Windows Active Directory Free Tools
Active Directory Duplicate Finder tool
Get Duplicates is a Powershell utility that is useful for administrators to identify duplicate entries for Active Directory attribute(s) in the domain. Duplicate entries are listed out on a convenient interface which helps administrators to ensure a duplicate free Active Directory.
Pre-requisites to using the tool:
How to get Duplicate AD attributes using 'Duplicates Identifier' tool?
This lists the duplicates for the selected attribute.
Note: The ‘Advanced’ button will help you generate results for more attribute in the Domain in accordance with the user’s query.
Run 'Get Duplicate Tool' using Powershell:
'add-PSSnapin 'GetDuplicates' followed by 'Get-GetDuplicates'.