Messenger error #602

[Sandra]

I just got a brand new Lumia 640 XL and Messenger wont start and says "username is not a member of the user table". How to fix that?

 

[Adam Garnett]

This seems to be a big problem that's sprung up recently with people using the latest Windows 10 Mobile build. There should be some sort of solution soon. There are at least two other forums on this topic, and nobody seems to have found a fix.

 

[RumoredNow]

This is an ongoing issue with the app... and ther are many threads about it.

Members, use this thread to further the discussion as it is the longest running: http://forums.windowscentral.com/windows-phone-apps/380928-2.htm#post3216352