How can I resolve the error message "Cannot access file '...' because it is being used by another process"
You receive this error message if the following conditions are true:
The assembly that is specified in the error message is a signed assembly and is not installed in the Global Assembly Cache (GAC); instead, the assembly is in the Bin directory of the ASP.NET Web application. -and-
Your ASP.NET Web application has just been restarted.