Post: #2

These messages are not errors, just some compiler warnings that can be safely ignored. But you can also disable these messages easily, you just need to right-click on project name > properties > C/C++ > general, and change "warning level" from level 4 to level 2

Anyway, this source code is from 07/feb/2017, which is outdated and will make your server highly vulnerable because it doesn't have any fix from past 4 years. It's recommended always use the latest source code available (https://github.com/Sphereserver/Source) to get the latest fixes/features, and also the latest visual studio version (current version is 2019)