Build error: “The process cannot access the file because it is being used by another process”

Question

I\'ve got a C# webforms app, that until today had been working just swimmingly.

Now today, all of a sudden, every time I try run the app, I get a file l

Answer 1

I had faced the same issue. I tried Several Solutions listed above but they didn't work for me.

I solved this issue by Closing the Connection from the Server Explorer and closed all the Tabs which was open in the Visual Studio.