This article explains what an ASP file is and how to open one on your computer.
How do I execute an asp file?
A file with the .ASP extension is most likely an Active Server Page file, an ASP.NET web page served by a Microsoft IIS server. The server processes scripts in the file and then generates HTML to display the page in the browser.
These files are also called Classic ASP files and normally use the VBScript language. Newer ASP.NET pages are saved with the .aspx file extension and are often written in C#.
You'll often see ".ASP" at the very end of a URL pointing to an ASP.NET web page, or when your browser accidentally sends you an ASP file instead of the file you were trying to download.
