Could not load file or assembly 'xxx.Data' The process cannot access the file because it is being used by another process

Question

I have this error since today in a project which I have worked for months and has always worked.

I tried cleaning the solution and rebuild, and building works perfect. I

Answer 1

I wanted to share my scenario here if it helps someone. I set an interval in javascript for two different functions calling the same function on the server side each differentiated with a just one parameter. Then OS threw the above error

The process cannot access the file because it is being used by another process

    [WebMethod]
    public List GetNotifications()
    {
        return objCommonModels.GetNotificationsData(1);
    }

    [WebMethod]
    public List GetOTPNotifications()
    {
        return objCommonModels.GetNotificationsData(2);
    }

        //Javascript
        setInterval(LoadNotifications, 3000);

        setInterval(LoadOTPNotifications, 3000);

Then i seperated the two functions to make them unique... I didn't have faith in differentiating the timer seconds in JS... HOPE IT HELPS SOMEONE..