since today suddenly two IEs are started, although I have configured only one WebAdapter. If I set "StartOnProjectStart" to false no browser is started. If I set it to true but "Not to run" only one browser is started, but it is not under control of Robotics. Is it a bug or how can I ensure, that only one browser is started.
What has changed in your adapter? Which build are you running? The adapter will start only one instance of IE. If you are getting an instance started when you have the Not to Run set, you must be starting IE somewhere in your solution separately.