The error ERR_BAD_SSL_CLIENT_AUTH_CERT is a security-related bug that appears in web browsers, especially Google Chrome, due to a failure to interact with the SSL/TLS client authentication process.  This issue arises when SSL/TLS certificates are required on both client and server sides, but the client fails to present a valid certificate or the server can't verify it. Common causes include certificate misconfiguration, incorrect device date/time, software issues, or interference from browser extensions and antivirus programs. There are many different ways to fix the error which you need to understand properly in detail. Furthermore I found the helpful resource at:-  https://cheapsslweb.com/resources/how-to-fix-the-err_bad_ssl_client_auth_cert-error. I hope it helps!     ... View more

@sandip87  It would be difficult to point our the specific misconfiguration without seeing your nifi.properties, login-identity-providers.xml, and authorizers.xml files.  Also sharing the complete stack trace thrown during NiFi service startup would be helpful as well.  There should be more than what you shared that was logged in the nifi-app.log. Thanks, Matt ... View more