For those of you who use Groove Music on Windows 10 and have been experiencing an app crash upon startup, Microsoft has rolled out an update to the app to address this annoying issue.
Turns out the issue was related to the sign-in portion of Groove Music, causing the app to crash. For some users, this was preventing Groove Music from being used completely. Thankfully, Microsoft rolled out the update within a few days and it's available right now if you have yet to update.
— Ellen Adams (@ellenment) November 6, 2015