During an upgrade, FusionAuth monitors your deployment, and if it becomes unresponsive for more than five minutes, the on-call engineer is alerted. A snapshot of the database is taken before the upgrade, so a rollback is possible, though it is manual and would result in data loss from the time of the upgrade to the rollback. Rollbacks are very rare and have only happened once in the past four years.

You can safely upgrade directly to 1.59, and many customers do skip versions. The upgrade process is straightforward: once started, the deployment status changes to Upgrading and returns to Active when complete. For production instances, downtime is minimal (typically seconds, if at all) because multi-node deployments use rolling upgrades. Most upgrades take under 20 minutes, though in rare cases they can take up to an hour.

FusionAuth never forces you to upgrade, but if you are running a very old version (1–2 years behind) and encounter issues, support may request that you upgrade before troubleshooting.

Upgrading a Deployment

The best way to see this is to visit the theme history github repo.

It is mentioned in the theme upgrade documentation.

That looks like you haven't applied the migrations needed. Per the release notes, that upgrade will require database migrations: https://fusionauth.io/docs/v1/tech/release-notes/

As a reminder, you can have fusionauth do the database migrations, but only if you are in development mode (check fusionauth.properties). If you are in production mode, you'll have to apply the migrations yourself, as outlined here: https://fusionauth.io/docs/v1/tech/installation-guide/upgrade/#database

FYI a lot more FusionAuth Cloud details are available in the cloud installation guide.

Added missing db migration notices for 1.21.0 and 1.22.0.

Once you make the purchase, you will be given a license id. You’ll enter that license id into your self-hosted FusionAuth under the Reactor menu item. This will activate your license and enable all of the premium features.

If you also purchase an Edition that comes with support, you’ll see a new menu item on your account in the FusionAuth website. This will let you open support tickets or provide you with our support phone number if you have an emergency.