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Defender Product Notification

Product Release

New Product Version Release

Defender 5.9.1


One Identity is excited to announce a new version of Defender 5.9.1 is now available.

Look what's new:

  • Defender AD FS Adapter adds two-factor authentication to services using browser-based federated logins
  • Rebrand to One Identity
  • Support for Windows Server 2016, Active Roles 7.1 and Active Roles 7.2


An upgrade to Defender 5.9.1 is possible from Defender 5.8.2 or Defender 5.8.1 only. If you have Defender 5.7 or earlier deployed, a direct upgrade to Defender 5.9.1 is not supported and may cause your Defender components to stop functioning properly, if attempted. Please upgrade your Defender 5.7 or earlier components to Defender 5.8.2 first and then upgrade them to Defender 5.9.1. See the Release Notes for details.  

If you need assistance with upgrading Defender or ensuring your solution is running optimally, please engage our One Identity Services team. If you need additional services, please visit our Defender Services page.  

Defender 5.8.1 will be in limited support as of 12/31/2017. To determine the current support phase of your product, please refer to the Defender Life Cycle Table.


Be sure to check out the Defender Product Support page to find solution articles, tips and tricks, tutorials, documentation, notifications, life cycle tables, training, and a product User Forum.