Handling system upgrade glitches requires a solid plan to minimize disruption. Start with a detailed rollback strategy and verified backups, testing the upgrade in a non-production environment. Implement staged rollouts to limit impact, keeping parallel systems active as a fallback. Use a dedicated response team and robust monitoring to detect issues quickly. Prioritize critical functions and document every step for troubleshooting. Communicate regularly with stakeholders, and have contingency plans ready. After resolution, conduct a post-assessment to learn from the experience, improving future upgrades with automated processes and incremental changes.

Start with full backups to ensure data can be restored if needed. Test upgrades in a sandbox environment before applying them to production systems to identify potential issues. Have a rollback plan in place, so if something goes wrong, you can quickly revert to a stable state. Keep system monitoring tools active during the upgrade to catch errors in real-time and ensure clear communication across teams so everyone is prepared for any challenges.