How to resolve failed Jenkins plugin downloads?

If you encounter issues while trying to download plugins in Jenkins, you can try the following solutions:

1. Check your internet connection: Make sure your connection is working properly and try using a different network to confirm if the issue is related to your internet connection.
2. Check Jenkins configuration: In the global configuration of Jenkins, make sure that you have properly set up the proxy server (if applicable). If a proxy server is in use, ensure that the settings are correct.
3. Try switching to a different Jenkins plugin update center by using different Jenkins update centers. In Jenkins’ global configuration, you can manually choose a different update center to download plugins.
4. Manually installing plugins: If you are unable to download plugins from Jenkins, you can try downloading the plugin manually from the Jenkins plugin website (https://plugins.jenkins.io/) or another reliable source, and then uploading the .hpi file to Jenkins through the plugin management page manually for installation.
5. Check Jenkins logs: Search the Jenkins log file for any error messages related to plugin downloads. You can find detailed error information in the Jenkins log file to help troubleshoot further.

If these methods do not work, you can try reinstalling or updating Jenkins, or reach out to the Jenkins community for further assistance.