Glassfish/Payara Administrator Credentials dialog annoying

When a Glassfish or Payara server is set up in Netbeans, Administrator Credentials dialogs keep popping up in random intervals, even though the credentials are correct. Probably, the timeout is just too short. The worst is that it steals the focus, i.e. you write an email an dthen notice that your sentence went into the user name field instead of the email software. I hate software stealing the focus, and Netbeans is really the worst here.