I use boost::context to implement cooperative multitasking. At the moment I use boost 1.57 on Windows 7 with VisualStudio 2013. Everything works fine until I throw an exception from a context created by "boost::context::make_fcontext(.......)". I have seen someone had the same problem and it was caused by the Windows OS, that checks the exception hierarchy in the stack and if it finds that the starting point is not the one that should come from the OS then it terminates the process. It suspects some malitious code that corrupted the stack. http://www.blinnov.com/en/2013/04/11/english-boostcontext-and-seh/ This guy metioned in his blogpost, that this problem was solved in boost 1.53 ("Boost 1.53 has updated and fixed version of boost::context library that addresses exactly this problem. "), but somehow I still have the same thing in 1.57. Is there some special preprocessor flag (#define) that I have to activate to get this fix? Thanks! Tamas