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RADIUS authentication failing after upgrading NetScaler to 12
Published: Sep 14, 2017   -   Updated: Sep 14, 2017
Issue: Radius authentication attempts fail for AD users after applying NetScaler 12 build 41.16 upgrade

Applies to:
  • RADIUS
  • Citrix Netscaler
  • Delegated Authentication

Cause: NetScaler 12.0 introduces an issue that causes a timeout during authentication attempts in environments using Active Directory Delegated Authentication

Resolution: downgrade the NetScaler to 11.1 build 53.11

Please see this discussion on Citrix's user forums for more details.

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