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How to show hidden Windows file extensions is simply a matter of making a selection inside folder options.
It's sometimes important to show hidden file extensions especially if you have downloaded an unknown file type and you need to look it up on the Internet. Also, sometimes you will receive a file from someone you know that accidentally deleted the file extension. In that case you will need to manually add the extension so the file will work. IMPORTANT: Never open files originating from unknown sources. You don't want to infect your system with a virus.
Steps for showing hidden Windows file extensions
1. Click Start > Control Panel.
2. Click Appearance and Themes, and then click Folder Options.
3. Select the View tab inside folder options and scroll down until you see a checked box "Hide extensions for known file types".
4. Uncheck the box and click Apply. You will now be able to see the Windows file extensions.
How to manually change Windows file extensions | Show Hidden Files or Folders
How to Show Hidden Windows File Extensions
It's sometimes important to show hidden file extensions especially if you have downloaded an unknown file type and you need to look it up on the Internet. Also, sometimes you will receive a file from someone you know that accidentally deleted the file extension. In that case you will need to manually add the extension so the file will work. IMPORTANT: Never open files originating from unknown sources. You don't want to infect your system with a virus.
Steps for showing hidden Windows file extensions
1. Click Start > Control Panel.
2. Click Appearance and Themes, and then click Folder Options.
3. Select the View tab inside folder options and scroll down until you see a checked box "Hide extensions for known file types".
4. Uncheck the box and click Apply. You will now be able to see the Windows file extensions.
How to manually change Windows file extensions | Show Hidden Files or Folders