“Help, I Can’t Create A C++ Project!”
Solution: You need to download ASP net Core 3.1
If you see this:
You probably need to download ASP net Core 3.1 (if you have Visual Studio 2019 already):
Pro Tip: If you are like me, you downloaded the installer, and then tried to create a project again, and got the same message, and you panicked and grabbed your dog/cat/nearest plant 
for comfort.
Don’t worry, you just have to restart your computer first, THEN it will work and you can being playing with C++ in UE5!
Visual Studio 2019
If you see this,
then you need to download VS 2019
C++ Modules
Don’t forget to include the C++ Modules for VS 2019!
Enjoy!
Rama