What Is a REG File?

A file with the .regfile extensionis a registration file used by theWindows Registry.

These files can containhives,keys, andvalues.

Screenshot of several REG files in Windows 10

Everything in it explains the changes that should be made to the current state of the registry.

you’re able to save lots of time when making the same registry changes on multiple computers.

How to View, Change, and Build REG Files

These are text-based files.

Windows Notepad is the text editor included in Windows.

Next, chooseAll Files (*.

It’s very easy to accidentally pass over theSave as typeoption when saving.

If you want to edit one, see the section above.

You literally combine the contents of the file with the other registry keys and values that already exist.

Alwaysback up the Windows Registrybefore merging your custom-made or downloaded REG file with it.

To merge/import it with the Windows Registry, just double-click or double-tap the file.

Depending on the changes that the REG file made to the Windows Registry, youmayneed torestart your machine.