If you're trying to open a file and it keeps opening the wrong apps, you may need to change your file extension. Here's how you can fix it ...

To show file extensions in Windows, open the File Explorer. Click View on the menu ribbon at the top, and check the box next to File name extensions. To change a file extension, right-click a file ...

The dialog box window more specifically states, If you change a file name extension, the file may become unusable. That dialog box pops up when File (or Windows) Explorer is configured to show file ...

How do I change the file extension for all files in a folder? To change the file extension for all files in a folder, in Windows 7, click on the Organize button and then click Folder and search ...

We show you how to change a file extension in Windows 10 using some File Explorer tweaks and a simple rename.

Learn how to rename files or folders in Windows 11/10 using Command Prompt, PowerShell, Context Menu, Home Menu in Explorer, Keyboard Shortcut, etc.

File extensions can protect against malware and make it clearer when searching for files. We teach you how to show File Extensions in Windows 10.

Here are four ways to show file extensions in Windows 11. You can view file types like PDF, PNG, ZIP, etc., and open them with a suitable app.

If you want Windows 10 to show file extensions, enable them in File Explorer, try with Control Panel, or via Registry Editor.

On Windows 11, you can change the format of a file in multiple ways through File Explorer, Command Prompt, and from a compatible application. In this guide, I'll show you how.