Yes, solved. The issue was with the VC++ Directories/includes . The project I was trying to build was looking for certain header files in locations the documentation did not list of all possible needed locations. Thanks for any help on this matter, From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Fedot Fedotov Sent: Thursday, June 07, 2012 2:18 AM To: pjsip list Subject: Re: Help understanding instructions for windows Hello! first of all - Use VS 2005 or VS 2008! and you will not have additional problems with build pjproject and add it to your own project 4. I set PJ_WIN32=1 in solution, when I used PJproject library and I put this macros in: <Project Properties>->Configuration Properties->C/C++->Preprocessor->Preprocessor Definitions-> add one more line "PJ_WIN32=1" 5. About linking pjproject library: to 2 things: 5.1 <Project Properties>->Configuration Properties->Linker->General->Additional Library Directories-> add one more line <path to directory with debug and (or) release pjsip library> for example D:\Projects\MyProject\libpjsip 5.2 <Project Properties>->Configuration Properties->Linker->Input->Additional Dependencies->add one more line libpjproject-i386-Win32-vc8-Debug.lib (for debug, and for release configuration of your own project - add release pjproject library) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120608/d0961891/attachment-0001.html>