To allow users to write registry keys under 
HKEY_CURRENT_USER without being part of a domain, you need to adjust the permissions on the registry key in question. Here's how you can do this: 
- Grant Write Permissions to the Registry Key:
- Navigate to the specific registry key you want to grant write permission to.
- Right-click on the key and select "Permissions."
- Click on "Add" to add the user you want to grant permission to.
- In the "Enter the object names to select" field, type the username of the user or group.
- Click "Check Names" to validate the user/group, and then click "OK."
 
- Set Permissions:
- Select the added user/group from the list of Group or user names.
- Check the box for...