If you want to change something in your Registry editor it’s good to have a Backup so if something won’t work after it you could go back to the moment it works.
1. When you open the registry editor to work with it go to „File->Export…“ to make a Backup
2. Now you could choose a save path.
You can also select „All“ to save the whole registry or „Selected branch“ to save only the path you work with.
3. If you want to insert the backup choose „File->import…“ and choose the backup data.<