At first i am sorry for my english. I run my 16 bit app on Win NT. This app runs some other 16 bit apps as child processes. When i try exit Win NT the main app processes WM_QUERYENDSESSION message and stops Win NT exit. Child processes don't receive WM_QUERYENDSESSION message, but Win NT informs me the app is not responding. How can i shake off this problem. I have not this problem on Win 95 or Win 3.1.