What is LostAndFound in ADUC ?


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  • Orphaned objects in AD. THey are usually caused by replication problems. It's possible that one object was created on one DC, it didn't replicate, and someone else created the same object on the other DC, then went to delete the first one, then the other one may pick it up as orphaned. That's a loose scenario, but you can see where if there are replication problems, it may cause this, among numerous other problems replication issues will cause.

    Lost And Found Folder in Active Directory

    Lots of orphan objects in Lost & found Container


    Are you having any AD replication or other AD issues? If so, please provide a little background and info so we can assist you.


    Ace Fekay
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    Tuesday, January 29, 2013 4:21 AM
  • LostAndFoundConfig container provides storage for global configuration objects (in forest configuration partition)that are being created in containers that are simultaneously being deleted elsewhere on the network.

    LostAndFound container (in directory partition of each domain) serves the same purpose for domain-specific objects.

    For those objects that is no longer necessary you can safely delete them in both two containers.

    For more information about the occurrence of replication conflict in Active Directory, you may refer to:

    A Guide to Active Directory Replication

    Resolving an Object Move into a Deleted Container
    As mentioned, resolving an object move into a deleted container is a relatively rare conflict, which only occurs in one of two scenarios. In one, an administrator on one DC creates an object within a particular container, for example the Training OU, at the same time that an administrator on another DC deletes the Training OU. The second scenario can occur when an administrator on one DC moves an object into a container at the same time that an administrator on another DC deletes that container.
    Resolution in this case is fairly straightforward: Active Directory moves the "orphaned" object into a special container within Active Directory that was designed for this purpose, the LostAndFound container that exists off of the root of each Active Directory domain. For the domain, the LostAndFound container would be found along the following LDAP path: LDAP://cn=LostAndFound,dc=contoso,dc=com. If you do not see the LostAndFound container when you open the Active Directory Users and Computers snap-in, simply click on View | Advanced Features.

    For details see the tread

    Biswajit Biswas
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    Best regards Biswajit Biswas Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. MCP 2003,MCSA 2003, MCSA:M 2003, CCNA, MCTS, Enterprise Admin

    • Edited by bshwjt Tuesday, January 29, 2013 4:32 AM
    Tuesday, January 29, 2013 4:25 AM