We strongly recommend you recreate your production instance and test the upgrade in this cloned environment.
- Create a snapshot of your current production Confluence environment on a test server - see Moving Confluence Between Servers for how to do this.
- Follow the steps below to perform the upgrade on your cloned environment.
- Test all your unsupported add-ons (plugins) and any customisation (for example custom themes and layouts) with the new version before proceeding with the upgrade in your production environment.