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There are good arguments both for and against disabling this option. If file extensions are not shown in explorer, renaming a file will not affect its extension. If an extension is accidentally removed, the file will not invoke the correct application and will not be useable until its extension is reinstated. If you cannot remember the correct file extension, you may not be able to reinstate the file. However, where you are trying to identify a file's extension, having them hidden can cause problems. The only indication of a file extension will be the icon displaying the application that it will be run under. Where you have several file types that run under the same application, it can be difficult to tell one from another without being able to see their file extensions.

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Why does windows display known file extensions?

You probably have the folder options settings chosen to to display the known files extensions. If you want to disable this option, then "Start" open up "My Computer". Now from the top nav-menu click on "Tools". A Folder Options box should appear. Click on the "View" tab. Now scroll down until you find an option that reads "Hide extensions for known file types" and put a check-mark in that box. Now "Apply" and "Ok", and now it should hide the known file extensions.


How do you hide known file extensions?

Open any folder, click on Tools, click on the View tab and check the "Hide extensions for known file types" box.


When does Windows hide file extensions in File Explorer?

Windows hides file extensions in File Explorer by default for known file types to simplify the user experience and reduce clutter. This setting can be adjusted in the Folder Options menu, where users can choose to show file extensions for all files. The option is typically turned on for security reasons, as displaying extensions can help users identify potentially harmful files. To view file extensions, users can enable the "File name extensions" checkbox in the "View" tab of the Ribbon in File Explorer.


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How do you set whether Windows Explorer displays the extension of the file or not?

open explorer, click Tools in Explorer, choose Folder Options.., on View tab scrol down till you see Hide extensions for known file types - check or uncheck this option.


Which file extensions are hidden after windows is installed?

By default, Windows hides the extensions of files when viewed in Windows Explorer and on the Windows desktop. You may unhide all known file types by opening Windows Explorer, selecting Tools > Folder Options, clicking the View tab, and removing the checkmark to ñhide file extensions for known files types.î


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Which file extensions are hidden just after Windows is installed?

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How do you unhide the files on computer?

in windows open folder options click the views tab and uncheck the box that says "hide extensions for known file types"


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