No debuging possible anymore, existing project showing "a project with an output type of class library cannot be started directly"

Questions & Answers
1

Hello everyone,

I have an existing project where I was able to activate debugging via the “Start in unity” button.

This button now does not exist anymore?! Only the Start button is there and when I hit it I get the following error:

182285-1.jpg

I tried to understand what this error message actually tells me in order to find out the reason behind it, but honestly I do not understand several things.

  • What is the “Output Type” in this context?
  • What is a Class Library?
  • What do I have to do to solve this problem?

Can anyone help me with this problem?

2

Have you tried regenerating the VS project files via Preferences > External Tools > Regenerate project files (Unity 2020+)