Here’s an early warning so Zwifters can plan tomorrow’s activities accordingly. Zwift has posted the following notice:

Planned Server and Database Maintenance

We’ll be performing a database & server upgrade impacting all systems on Apr 17, 3:00 – 5:00 UTC // Apr 16, 8PM – 10PM PT. All services will go offline and you will not be able to login or save any data.

We will be upgrading our Authentication System Servers and migrating and upgrading the Database Servers used by the Authentication System. While this maintenance is in progress access to Zwift servers won’t be possible. Users should avoid riding into that maintenance windows because besides riding alone it won’t be possible to save or upload your activity while the maintenance is in progress, and existing sessions may get invalidated after the upgrade.

As always, Zwift system status (including scheduled maintenance windows) is available at