Hey everyone, Just wanted to share my experience with the same Solr Server error message I recently encountered. Following @surajacharya advice above, I compared the permissions on the truststore file between a functioning Solr server host and the problematic one. I noticed that the permissions were set to 400 on the problematic host and 644 on the good one. I went ahead and adjusted the permissions on the truststore file of the problematic host to 644 and then restarted the Solr server. Voila! The issue was resolved. Just thought I'd share this in case someone else runs into a similar problem. ... View more