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The VPN 3030 Concentrator cannot authenticate to new Active Directory (AD) controllers

Core issue

Authentication for users might fail on the VPN Concentrator while using the Active directory (AD) controller,

The VPN Concentrator throws out the error shown below,

%AUTH-4-5: RPT=267: Authentication rejected: Reason = Unspecified handle

Resolution

To resolve the issue, perform these steps:

  1. Make sure that time syncronization between the VPN Concentrator and the domain controller is done.

  2. The domain name must be specified in upper case on the VPN Concentrator.

  3. Disable preauthentication in the user profile of the domain controller.

For additional information, refer to PPTP to CVPN Concentrator.


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