Yes you are right i overlooked that the default is 2 minutes so this cannot work. I will implement this evening and retest this auto logout after an idle time of 8 minutes.
But i guess my original problem isnt solved, but i hope with setting the correct timeout values i can avoid it.
We took all your sugestions in considiration and checked them one by one but cannot find anything in the code what can cause these switching sessions.
So if i understand well i should put the sessionstate timeout to 2 (minutes) and KeepConnectedLimitation to 3 there should be a timeout after 8 minutes and the session is killed?