How to Show or Hide File Extensions in window 7 or window xp?

How to Show or Hide File Extensions in window 7 or window xp?

This is main problem that you can not see the extension of file in operating system on window wista and window 7 and you can not change the extension by rename the file.

For window 7 open any folder press alt button a top navigation will show on top.

Click on tools as image shows below

1. Click on folder option
2. Click on View Tab

3. Click Show or hide file extensions.
4. In the Folder Options box that appears, clear the checkbox next to Hide extensions for known file types, then click OK.




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