Minecraft 1.12 recently came out and so obviously I am gonna have to update the game to get it. However, if I am connected to WiFi and I open Minecraft, it starts to update. It fills up the loading bar 120.38 MB. (all the way) And then it just resets at 0.00 MB. I can play in 1.12 if I turn off WiFi, but I want to play online on servers.
After it does this about 3 times it displays the following message: Unable to update the Minecraft Native Launcher