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How to Show File Extensions in Microsoft Windows XP

1) Open Windows Explorer.

1a) Choose “My Computer” from the Start Menu. This is NOT the same thing as Internet Explorer.

2) Click the “Tools” menu on the menu bar in Explorer (the menu bar is at the top of the Explorer window, underneath the window title).

2a) Click the “Folder Options” item in the popup menu that appears.

3) A dialog box appears.

3a) Click the “View” tab at the top of the window.

4) Locate “Hide file extensions for known file types”.

4a) Uncheck the box beside it to disable it.

5) Click the button “Apply to All Folders”.

5a) Then click “Apply” and then “OK”.

How to Show File Extension in Microsoft Windows Vista and Windows 7

1) Click the Start menu.

1a) This is the round icon that is on the bottom left corner of your screen.

2) Type “folder options” (without the quotes).

2a) Click the line “Folder Options” that appears at the top of the Start menu.

3) A dialog box with the title “Folder Options” will appear.

3a) Click the “View” tab at the top of the window.

4) Click to uncheck the box for “Hide extensions for known file types”.

5) Click the “OK” button at the bottom of the dialog box.

How to Show File Extensions in Microsoft Windows 8

1) Click the start screen.

1a) Move your mouse to the bottom left corner of your screen.

1b) In Windows 8, there’s no indication that this will cause the start screen to appear.

2) Type “folder options” (without the quotes).

3) Click the line “Settings” on the right side of the screen.

4) The left side of the screen now shows “Folder Options” as one of the possible results.

4a) Click it.

5) A window with the title “Folder Options” will appear.

5a) Click the “View” tab at the top of that dialog box.

6) Look for the line “Hide extensions of known file types” and click the box beside it to remove the check mark.

7) Click the “OK” button.

How to Show File Extensions in Microsoft Windows 10

1) Click the icon on the task bar at the bottom of the screen to invoke the Start menu. (Windows logo.)

2) Type “folder options” (without the quotation marks).

3) Click the “File Explorer Options” item that appears in the “Best match” list.

4) A dialog box with the title “File Explorer Options” will appear.

4a) Click the “View” tab at the top of the window.

5) Scroll to find the item “Hide extensions for known file types” and click the box next to it to remove the check mark.

6) Click the “OK” button.