Before diving into the main parts of our series, there may be some of you (like me!) that were already building apps with the preview SDK for Windows 10. If you attempt to open a preview solution with the final version of the SDK installed, you will very likely have issues (as I did!). In this quick bonus post, I’ll cover just a few of the issues I had to fix to get my project updated and running with the latest releases of both Windows 10 and Visual Studio 2015.
Note that your mileage may vary as every project is different, but this is what worked for me, and hopefully it can help others facing similar issues.
Read more at the Falafel Software Blogs: Windows 10 Development: Upgrading from Preview SDK to Release