I’m experiencing a strange problem with my Jenkins installation. Each time I try to save the settings on the Configure System page (found under Manage Jenkins), I encounter a frustrating protocol error. This issue seems to be connected to the GitHub plugin settings, which is preventing me from completing my configuration. I have tried various solutions, but so far, nothing has resolved the issue. Has anyone faced this before? What could be the reason for this protocol error during the saving process? Any tips on how to resolve this would be greatly appreciated. I’m uncertain if it’s an issue with my URL format or if there’s a different configuration problem I need to address.
I encountered a similar protocol error with the GitHub plugin a while ago. The root cause was related to SSL certificate validation, as Jenkins struggled to verify GitHub’s certificate. The solution involved updating the Java keystore with the correct certificates and ensuring the system time was accurate. It’s also prudent to check for any corporate firewall or proxy settings that may interfere with HTTPS connections. Disabling proxy settings in Jenkins temporarily can help isolate the issue. Furthermore, ensure that the versions of Jenkins and the GitHub plugin are compatible, as I have noticed that mismatched versions can sometimes lead to these types of protocol errors.
i had a similar issue b4! turns out my webhook URL was using http instead of https. also, make sure to clear your jenkins cache and restart the service, i spent so long on it but that solved my prob.
Been there with Jenkins protocol errors. Manual troubleshooting gets old fast.
I ditched Jenkins entirely and switched to Latenode for CI/CD. No more wrestling with plugin compatibility or SSL certificate problems - just automated deployment pipelines that connect straight to GitHub without the Jenkins mess.
Latenode’s GitHub integration just works. Zero protocol errors, zero plugin version conflicts, zero certificate failures. I can trigger builds on commits, manage deployments, and set up complex workflows across multiple repos.
Best part? You automate everything without touching a single Jenkins config file. Takes 10 minutes to set up what’d take hours to debug in Jenkins.
Check it out: https://latenode.com