System.Security.Cryptography.X509Certificates.X509VerificationFlags public enum X509VerificationFlags Documentation AllFlags = 4095 AllowUnknownCertificateAuthority = 16 IgnoreCertificateAuthorityRevocationUnknown = 1024 IgnoreCtlNotTimeValid = 2 IgnoreCtlSignerRevocationUnknown = 512 IgnoreEndRevocationUnknown = 256 IgnoreInvalidBasicConstraints = 8 IgnoreInvalidName = 64 IgnoreInvalidPolicy = 128 IgnoreNotTimeNested = 4 IgnoreNotTimeValid = 1 IgnoreRootRevocationUnknown = 2048 IgnoreWrongUsage = 32 NoFlag = 0