Unknown Change in code files - externally

I am working on the project and got that message in the visual studio the files are modified externally, reload files… I reloaded and now the project is broken I can’t compile it.
I have a backup copy of the project and will restore it, this is not a problem.

The Question what makes these changes and I on the PC +3 live hours, and nobody at home, what to blame for this change?

Smells like you are using pirated VS or its plugin … or many other reasons. :earth_africa:

Sir, I have free visual studio code :yawning_face: