Every time you work on large assembly or drawings inventor goes not responding and in the task bar an ADApplicationButton could be seen which is running in the background while inventor hangs.
Is this known issue with Inventor and is there any fix for this? Please help.
I understand how frustrating this problem is!
My bet is that you have a 3Dconnexion mouse. When I uninstalled the software drivers for my 3D mouse, these problems went away. When I re-installed the drivers, the problem came back.
I followed the procedure found on the following link and have not experienced the problem since.
Alternatively, you can try unloading the 3DxInventor addin from Tools>Options>Add-Ins. Apparently it has worked for some people but then it was reported that the buttons on the mouse won't work afterwards.