Microsoft UNIX Licensing.

1978 AT&T System 7 for XENIX

1991 Apple System 7 for Windows 3.1

1994 DEC UNIX for Windows NT

2002 SCO UNIX for Windows XP

After XP Microsoft moved away from UNIX Licensing and started International ECMA 335 & 336 Standard or .NET.

Microsoft Buys Into SCO Group’s Unix

Microsoft to license Unix code 

I licensed Windows NT, XP and 2003 code from Microsoft and have my original System Integrator contract.my startup is a Gold Microsoft Partner and Microsoft Bizspark Graduate. I'm a UVa Computer Science Alumni in 2013 with a 3.2 GPA and Scholar award. I need my Windows Vista, 7, 8/8.1 Source to complete my Microsoft contract and I have my software assurance

Startups … inside giant companies