Hi, provided you've got setup CAS and its certificate correctly, did you 
check that your Java client application really uses the truststore file 
located at "C:\Program Files\Java\jdk-17\lib\security\cacerts"? You can do 
that by adding the following JVM option (system property) when starting the 
Java application: "-Djavax.net.debug=trustmanager" (or 
"-Djavax.net.debug=all", but that will output MUCH more lines).

On Wednesday, 21 June 2023 at 17:01:53 UTC+2 Ray Bon wrote:

> The backend communication between cas and the client needs to be https, 
> even if the browser URL is http.
>
> Check tomcat config (or whatever container you are using), which also 
> needs to know about the cert.
> I have this in server.xml on my laptop:
>
> <Connector port="8443" 
> protocol="org.apache.coyote.http11.Http11NioProtocol"
> maxThreads="150" SSLEnabled="true" scheme="https" secure="true" 
> keystorePass="password"
> keystoreFile="/etc/ssl/certs/thekeystore" clientAuth="false" 
> sslProtocol="TLS">
> </Connector>
>
> Ray
>
> On Mon, 2023-06-19 at 04:43 -0700, fasr favk wrote:
>
> Notice: This message was sent from outside the University of Victoria 
> email system. Please be cautious with links and sensitive information.
>
>
> Hello, my cas server is working fine, but when i try to log in to my cas 
> client application with spring boot , it gives this error : 
> "PKIX path building failed: 
> sun.security.provider.certpath.SunCertPathBuilderException: unable to find 
> valid certification path to requested target..."
>
> i already imported my cas.crt to cacerts in my jdk 17. with keytool:
> *keytool -import -file "C:\etc\cas\cas.crt" -alias cas -keystore 
> "C:\Program Files\Java\jdk-17\lib\security\cacerts"*
> NB: after refreshing my cas server i can see myself logged in with cas 
> client, and am using ldap for auth
> [image: err.png]
>
>

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