Trust anchor not found connecting to server from Android app

[Till R]

I exchanged the built-in cert with a let's encrypt cert for the https port. It seems to show fine in the browser. However the app gives a connection error:

The remote server could not be joined: javax.net.ssl.SSLHandshakeE xception: java.security.cert.CertPath ValidatorException: Trust anchor for certification path not found.

What could be the problem? Is the cert store hard coded inside the app?

Thanks in advance for any hints .

Till

[Till R]

I solved it: the X1 lets encrypt cert was missing in the chain. Seems like there cannot be multiple certs in one file? Anyway: it works now!

Till

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[Bubblesoft]

Hi,

Yes, as you found out, each certificate in the chain must be in its own separate file, as explain in the doc:

https://bubblesoftapps.com/bubbleupnpserver2/docs/config_advanced.html#configuring-a-custom-tls-certificate