Hallo everyone, I have used ATL server and I have a problem with multiple Valdate&Exchange execution upon only one request for server file ,what causes an error in inetinfo.exe (Unhandled exception at 0x7c901230 in inetinfo.exe: User breakpoint) I have debugged the application and at some point of the validate and exchange function (before finishing all instrucions) , function is executed once more from the beggining and afterwards comes back to the last instruction before second execution. I think thats the reason for the problem. I also tried executing application on the other pc and there it functions without any problem Could anyone help me please