Fix: The process cannot access the file because it is being used by another process (.NET)
Stuck with the annoying "The process cannot access the file because it is being used by another process" or MSB3021 error in Visual Studio? In this video, we'll fix this build error in less than 1 minute so you can get back to coding!
This error usually happens when a background process (like a hanging .exe or a lagging Hot Reload node) keeps your compiled application locked in the bin\Debug\ folder, preventing MSBuild from overwriting it.
Hope you like this!