Will dropping out of a masters make it harder to get accepted to a masters in another field?
I can only say this with all of my heart:

Above all else, choose a field that maximizes both your earning potential and your love for the occupation.

In that statement, I've narrowed it down to two variables. You can make it more complicated if you choose, but I'd advise against it. Trust me. 25 years from now, you don't want to regret having chosen the wrong occupation. I can't stress that enough. Look at this resource regarding occupations.