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Active Directory Migration with more than 100,000 objects

The specialists of FirstAttribute AG supported one of the largest IT service providers in the chemical industry with an Active Directory Migration.

More than 100,000 users and several thousand servers in a single Active Directory domain were migrated. Here it was important to overcome very specific challenges, like

  • many group memberships of individual users
  • a cleanup of the SID History Migration from previous projects


Our specialists supported the project management of internal IT service provider with the preparation of a migration concept. There were more than 100,000 user objects in the synchronization with the different AD domains.

In this complex environment we used the Active Directory Migration Tool Quest Migration Manager for Active Directory as well as special extensions.

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