multiple flyGarmin services used by aircraft pilots are down, including the flyGarmin website and mobile app, Connext Services (weather, CMC, and position reports) and Garmin Pilot Apps (Flight plan filing unless connected to FltPlan, account syncing, and database concierge).
inReach satellite tech (Service Activation and Billing) and Garmin Explore (Explore site and Explore app sign) used for location sharing, GPS navigation, logistics, and tracking through the Iridium satellite network are also down.
Garmin did a hard shutdown of all devices hosted in a data center as well to prevent them from possibly being encrypted.
This company-wide shutdown is what caused the global outage for Garmin Connect and other connected services.