on-boarded(added CNAME’s to Cloudflare and started proxying) two websites in cloudflare for a domain.
Users are facing issue in connecting to the websites from their respective interfaces.
Logs in the their interface found this error:
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Any help greatly appreciated.
That’s completely foreign to me.
It sounds like your CNAMEs are set to 
and they don’t work. Do they work when they are set to 
? And are you using HTTPS in both cases?
Thanks for your response.
Yes the websites are working normal for many users but there are a couple of users trying to reach these websites from an interface and they are getting this certificate error.
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Note* Websites are working as normal and have no issues.
So it sounds like their interface is acting somewhat like a browser, but they don’t like the SSL/TLS certificates? Is this consistent for all users of that specific interface?
It might help to run the hostname through an SSL test for potential warnings:
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