Q. How can I open an ".ASC" file?
These files can be opened practically by any text editor [such as Notepad or TextPad on Windows; TextEdit on Mac OS] and executed with the proper scripting engine. Launch a .asc file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .asc file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .asc files aren't yet associated with it. In this case, when you try to open a .asc file, you can tell Windows which application is the correct one for that file. From then on, opening a .asc file will open the correct application.
Retrieved April 14, 2017 from http://www.reviversoft.com/file-extensions/asc