How do I eliminate outlook keeps asking for password?

It is extremely annoying, when MS in spite of entering it many times in the app. I am passing through this technical situation. So it is making me more frustrating. I don’t know exactly why I am facing this difficult situation. There can be many technical causes why it asks from me to type my password again and again. I have applied my technical solutions to sort out Outlook keeps asking for password error, but no results. I have no appropriate resolutions for this error.