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How to Show File Name Extensions in Windows Explorer

I do not see the file name extensions when I look at my files in Windows Explorer. How do I turn this on?

Different file types have different extensions. For example, a Lighthouse Studio survey has an extension of .ssi. When data is accumulated into Lighthouse Studio, it creates a database file which has a .db3 extension. When you export data, it is often saved as a .csv extension. There are dozens of different file name extensions that are used by Sawtooth Software products. File extensions help the operating system identify the correct program to open for that particular file. Being able to see these extensions will help you better manage the files.

To show file name extensions in Windows Explorer, follow these steps:

For Windows 8-10

  1. Start Windows Explorer, you can do this by opening up any folder.
  2. Click the View menu.
  3. Check the box next to "File name Extensions"

For Windows Vista, Windows 7, and Windows Server 2008

  1. Start Windows Explorer, you can do this by opening up any folder.
  2. Click Organize.
  3. Click Folder and search options.
  4. Click the View tab.
  5. Scroll down until you notice Hide extensions for known file types, un-check this line by clicking the check box. To hide file name extensions, check this line.
  6. Click OK

For Windows 2000, Windows XP, and Windows Server 2003

  1. Start Windows Explorer, you can do this by opening up any folder.
  2. Click Tools, and then click Folder Options.
  3. Scroll down and then click Folder and search options.
  4. Click the View tab.
  5. Scroll down until you notice Hide extensions for known file types, un-check this line by clicking the check box. To hide file name extensions, check this line.
  6. Click OK

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