Same issue on 3 different switches in my house. Seems to work until the switch goes to sleep or is shut off and then its logged out. Quickest workaround I have found is to manually close the software (home button and press x) on the switch then then relaunch it then try to login to the Microsoft account, then have to go login on the computer. Otherwise it either gets stuck in a loop of asking me to login to the account over and over or it just hangs and never finishes loading the game. The main screen background loads without the actual UI loading. Really annoying when both kids are trying to play together on their switches and I have to repeatedly login to both switches and pull out a computer to login to both Microsoft accounts about 10 times a day.
Same issue on 3 different switches in my house. Seems to work until the switch goes to sleep or is shut off and then its logged out. Quickest workaround I have found is to manually close the software (home button and press x) on the switch then then relaunch it then try to login to the Microsoft account, then have to go login on the computer. Otherwise it either gets stuck in a loop of asking me to login to the account over and over or it just hangs and never finishes loading the game. The main screen background loads without the actual UI loading. Really annoying when both kids are trying to play together on their switches and I have to repeatedly login to both switches and pull out a computer to login to both Microsoft accounts about 10 times a day.