Rejected NTLM authentication

[Sacha_Brys]

Client Certificate Error(s): 1) Unknown Certificate Authority: A valid certificate chain or partial chain was received, but the certificate was not accepted because the CA certificate could not be located or couldn`t be matched with a known, trusted CA

So,

When I do a ‘Configuration evaluation Tool’, then the user would hit the right rule.
What is going wrong here?

[Stefan_K_]

Did you import the Root-CA Certificate in your AAA-Config?

Control → Access Control → Configuration → AAA → Select your AAA-Config → Update Trusted Authorities