Android Apps asking for Domain Passwords

I’m new to mc home, and have got my head around some of its idiosyncrasies in the last week, but one i can’t figure is the android apps on a tv streamer have suddenly started asking for user account name and password.

It is essentially the same issue as in this support page (below) re the same event happening on windows systems. I tried the ‘nobody’ and random here, but it didn’t work.

it is windows 10 pro 64 and android 7. several apps are affected, one or two are not,. of those affected vlc will be the most familiar.