Windows Troubleshooter Guide/File Extensions

When troubleshooting problematic issues, knowledge of the various types of files you may come across can be of utmost importance. One way of figuring out which files to suss out as important and not important, besides the name, is the file extension. Aside from the usual file extensions one comes across such as  or , these files are often unreadable using non-programming related computer programs, and even then, may not be readable at all, save for the computer itself. Most issues one finds on a computer tend to originate from a program complaining about some  file with a specific reference to some line in code from a   file.