id summary reporter owner description type status milestone component version severity resolution keywords cc 10788 GetLogicalProcessor isn't available for Windows platform less or equals to 0x0502 steve.tousignant@… viboes "I've runned into an issue while using boost 1.56.0 and boost 1.57.0 while ours software was deployed on a Windows XP SP2. When using the threading library from boost, we have found out that it was using a feature only available on Windows XP SP3 and higher. The effect are that the software built with Boost 1.56.0 and boost 1.57.0 refuse to start even after we force the feature set of windows XP to be used by the Windows Platform SDK. I will attach a patch as a proposed fix for future version of boost." Bugs closed Boost 1.60.0 thread Boost 1.57.0 Problem fixed