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TElX509CertificateValidator validation fails when it should not

Posted: 08/24/2015 12:01:18
by Charlie Jimenez (Standard support level)
Joined: 08/14/2012
Posts: 38


I am using the TElX509CertificateValidator object with a TElSecureClient component in .Net. SBB version is

During the SSL handshake, the server sends me its certificate and also the issuer certificate. The TElX509CertificateValidator fails the validation with a Reason code of 64 (CA not authorized). Yet the issuer certificate's Key Usage is set for Digital signature, Certificate signing, and CRL signing.

So why would TElX509CertificateValidator be rejecting this issuer certificate? Is there something else it is looking for in the Key usage or other fields?


Posted: 08/24/2015 12:12:41
by Eugene Mayevski (Team)

Some certificates don't have their properties set properly (certain attributes must be set to critical and they are not).

Please try setting IgnoreCABasicConstraints and IgnoreCANameConstraints properties to true and see if this helps.

Sincerely yours
Eugene Mayevski
Posted: 08/24/2015 12:25:23
by Charlie Jimenez (Standard support level)
Joined: 08/14/2012
Posts: 38

Thanks for you quick reply.

Yes, changing those settings allowed the cert chain to be validated. I checked the issuer cert and although the Key usages are set as I stated, they are not marked critical, so maybe that's the problem.

Thanks again,




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