Environment: MSVC++ 9.0. I create the following DLL: ***bip_dll.cpp*** include <boost/interprocess/sync/named_mutex.hpp> using namespace boost::interprocess; named_mutex mutex(open_or_create,"foo"); __declspec(dllexport) void foo(){} ***bip_dll.cpp*** and use it inside the following executable: ***test.cpp*** __declspec(dllimport) void foo(); int main() { foo(); } ***test.cpp*** The program hangs on DLL loading time when creation of mutex in bip_dll.cpp is attempted. In particular, hanging occurs inside the invocation of get_wmi_class_attribute(strValue, L"Win32_OperatingSystem", L"LastBootUpTime"); in line 1554 of boost/interprocess/detail/win32_api.hpp, when control hits lines 1479 and ff: if( 0 != pIWbemLocator->ConnectServer( bstrNamespace, // Namespace 0, // Userid 0, // PW 0, // Locale 0, // flags 0, // Authority 0, // Context &pWbemServices ) ) { ... This is related to ticket https://svn.boost.org/trac/boost/ticket/4606 . Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo