I am attempting to build the OpenSSL dlls for Windows 2012 R2. I have MS Visual Studio 2015 Enterprise and ActivePerl installed. During the "nmake -f ms\ntdll.mak" process I get an error message the "windows.h" file cannot be found. I have several copies of "windows.h" on my computer: 1 each for Windows 7 and Windows 8.1, and 2 for different versions of Window 10. I'm assuming the Windows 8.1 version would be compatible with Windows 2012 R2, however I am not sure where to put the "windows.h" file so it will be picked up during the build. Any guidance would be greatly appreciated. [cid:image001.png at 01D1331E.96FD6780] Joseph A. Bossle III, "Jody" Sr. Technical Consultant / Global Information Technology Baxter International Inc. One Baxter Parkway / Deerfield, Illinois 60015 T 224.270.3563 / M 630.650.9413 joseph_bossle at baxter.com<mailto:john_sample at baxter.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20160425/a7bc1082/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 5416 bytes Desc: image001.png URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20160425/a7bc1082/attachment.png>