I had this error when I upgraded from 8 to 8.1 and thought that my upgrade went wrong. I uninstalled my upgraded version and did a clean install of 8.1 but the error still persists whenever I just click on the "Find More Apps". I did the self signed certs as instructed in the documentation and updated all the configs (web.conf, server.conf, input.conf)
but it pulls in a different certs which looks like a default one but i have no idea where this would be set or if it is something else as this is a clean install and has this error out of the box.
Error connecting: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed - please check the output of the `openssl verify` command for the certificates involved; note that if certificate verification is enabled (requireClientCert or sslVerifyServerCert set to "true"), the CA certificate and the server certificate should not have the same Common Name.. Your Splunk instance is specifying custom CAs to trust using sslRootCAPath configuration in server.conf's [sslConfig] stanza. Make sure the CAs in the appsCA.pem (located under $SPLUNK_HOME/etc/auth/appsCA.pem) are included in the CAs specified by sslRootCAPath. To do this, append appsCA.pem to the file specified by the sslRootCAPath parameter.
I tried and followed the suggestion "appending appsCA.pem" etc but it's is not a solution.
I am a little lost here, since all of the recommendations and suggestions didn't work.