since today my MEL Cloud binding stopped working:
Login error, reason: java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
It was working for years… does anybody else facing the same issue?
(I am running OH 5.0M2)
Regards, Kai
Same problem here, i’m still running on OH 4.3.5:
Login error, reason: java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
MELCloud-Bridge-Thing in OH reports COMMUNICATION_ERROR.
Login and communication on MELCloud works as expected.
Regards, Rolf
Same here, also still on 4.3.5
Same here with OH 4.0.0
Now it‘s online again (for me).
Strange, isn‘t it? 
Same discussion here.
Cloud with app worked for me yesterday but OH not. Still curious why this happened, perhaps they changed their SSL certificate and distrubution took some time?!? Code looks fine for me.
Now after stop / start account it’s online again.
I checked one of the URLs the binding calls yesterday and the certificate was valid from the 5th June, so relatively new. Doesn’t account for the issue only happening yesterday. The intermediate and root were issued ages ago too, so unless they changed the problem doesn’t sound like it was from there.
Would need to check the cert again to see if it’s been updated in the last 24 hours.
Today MEL-Cloud Binding is online again without any modifications. 