The trouble sourced from the watch's automatic connection. Some WiFi hotspots the Series 3 models latched onto were the unauthenticated (aka captive) kind used by coffee shops or libraries that redirect users to a web page to confirm or further interact. Because the watchOS would link automatically without bringing up the prompted site, users were stuck in limbo, unconnected but locked to inoperative WiFi.

Device owners can download the 4.0.1 update from the Apple Watch app on their iPhones. Per the update's language, according to 9to5Mac: