Forticlient terminates WLAN

hello,

i use the forticlient version 6.0.10.0297 and have the following problem

i establish a connection to the internet via wlan 

then connect me with my infrastrucure (mail / file server) using forticlient

after a short time the WLAN connection is terminated (the forticlient seems to keep going) then he stopped and the WLAN connection is established again

for this a use an MS Win 10 Pro client

with an MS Win 7 and an older forticlient Version i have no problems (using the same WLAN).

can anyone help me here?  

greetings