Visual Studio C# can't start helloWorld?

Question

C++ / C#

...\Bin\Microsoft.Common.CurrentVersion.targets(4183,5): warning MSB3026: Failed to copy 'obj\Debug\netcoreapp3.1\ConsoleApp1.dll' to 'bin\Debug\netcoreapp3.1\ConsoleApp1. dll". Retry 10 will start in 1000ms. The process cannot access the file "bin\Debug\netcoreapp3.1\ConsoleApp1.dll" because this file is being used by another process. "ConsoleApp1 (15008)" is blocking this file.
What is it, already after 1 compilation. What process is blocking?
PS And why are there already such problems on hello World, I clicked somewhere in the wrong place.

Answer 1

Find the ConsoleApp1 process in the task manager (or the process with the name of your hello world) and kill it.