Where are registry key associations for file extensions located in the registry?

HKEY_CLASSES_ROOT
Extensions are associated in HKEY_CLASSES_ROOT key.

How do I show file extensions in Windows XP?

Windows XP

1. In Windows Explorer, choose Tools > Folder Options.
2. Click the View tab in the Folder Options dialog box.
3. In Advanced Settings, select Show Hidden Files and Folders.
4. Deselect Hide Extensions for Known File Types.
5. Click OK.

Where are file extensions stored?

View the files belonging to an installed Chrome extension When extensions are installed into Chrome they are extracted into the C:\Users\[login_name]\AppData\Local\Google\Chrome\User Data\Default\Extensions folder. Each extension will be stored in its own folder named after the ID of the extension.

How do I make file extensions visible?

Windows 10:

1. Open File Explorer; if you do not have an icon for this in the task bar; click Start, click Windows System, and then File Explorer.
2. Click the View tab in File Explorer.
3. Click the box next to File name extensions to see file extensions.
4. Click the box next to Hidden items to see hidden files.

How do I show file extensions?

Fortunately, it only takes a few steps:

1. Choose My Computer from the Windows Start menu. (You can use any method for launching Explorer.)
2. Choose Folder Options from the Tools menu and click the View tab.
3. In the Folder Options dialog box, uncheck the Hide Extensions For Known File Types option.
4. Click OK.

How do I fix registry file is missing or corrupt?

If the Windows System Registry file is missing or contains errors, enable the Recovery Environment, and run Startup Repair. Additionally, use System Restore and repair your Master Boot Record using Command Prompt. If the issue persists, reset your computer. As a last resort, clean install Windows.