Quick Start
This page gives you the shortest reliable path to your first change in O&O RegEditor.

Figure: The main window — key tree on the left, value list on the right.
Before You Start
Changing the registry can affect the stability of Windows and installed programs. Before you edit anything important:
- Make a current backup of your data.
- Export the key you are about to change so you can restore it later. See Export.
Make Your First Change
- Open O&O RegEditor.
- In the key tree on the left, expand a main key (for example
HKEY_CURRENT_USER) and navigate to the key you want to edit. You can also type or paste a path into the address bar and press Enter. - Select a key. Its values appear in the value list on the right.
- To change a value, double-click it — or select it and press Enter — to open the value editor.
- Enter the new data and confirm with OK.
- To add something new, right-click a key and choose New to create a subkey or a value of the type you need.
Recommended Habits
| Habit | Why it helps |
|---|---|
| Export before you edit | Lets you re-import the original data if a change causes problems. |
| Use the address bar | Fastest way to reach a known path; it also remembers recent paths. |
| Add frequent locations to Favourites | One-click return to keys you visit often. |
| Search instead of scrolling | The result list finds keys, value names, and data across a whole branch. |
What To Do Next
- Learn the interface in User Interface.
- Understand keys, values, and hives in Registry Structure.
- Learn the value types and how to enter data in Value Types.