Hi @Mina,
Have you followed the getting started instructions exactly?
QGC has very strict build requirements, so if you’re using an incorrect version of Visual Studio or Qt it likely won’t work. Also make sure you’ve updated the submodules in your cloned source directory, otherwise some of the required code will be missing.
If I’ve got some time tomorrow I’ll see if I can spin up a Windows VM and get building set up. Otherwise I’ll try to check early next week 