Settings Reference
Most settings are changed directly from the menus — see Appearance and Language. This page documents where settings are stored and the options that can be adjusted in the configuration file.
Where Settings Are Stored
O&O RegEditor stores its settings in a portable configuration file rather than in the registry.
| Location | When it is used |
|---|---|
OORegEditor.cfg in the program folder | Preferred when present — lets you carry your settings with the program (portable use). |
%LocalAppData%\OO Software\OO RegEditor\OORegEditor.cfg | The per-user location, used when no portable file is present. |
The file is a UTF-8 text file in an INI-like format with sections and entries. When you first run this version, existing settings from earlier versions are migrated automatically from the registry; the original registry entries are left untouched.
When O&O RegEditor runs inside the Windows Preinstallation Environment (for example as part of O&O BlueCon), settings are kept in memory only and are not written to disk.
Adjustable Options
These entries live in the [Settings] section. Most have a menu equivalent; a few can only be set by editing the file while the program is closed.
| Entry | Meaning | Default | Menu equivalent |
|---|---|---|---|
Language | Interface language: 0 = Windows default, 1 = English, 2 = German. | 0 | View > Language |
ThemeMode | Appearance: follow Windows, light, or dark. | Follow Windows | View > Appearance |
AddrListMaxItems | Maximum number of paths kept in the address-bar history. | 100 | — (file only) |
SearchMaxResults | Maximum number of search results; 0 means unlimited. | 0 (unlimited) | — (file only) |
TitleValueBeforeKey | Show the value name before the key path in the window title. | On | View > Window title |
TitleReverseKeyOrder | Reverse the order of the key path segments in the window title. | Off | View > Window title |
TitleKeyCharLength | Number of characters shown for the selected key segment in the title. | 9 | — (file only) |
TitleMiddleKeyCharLength | Number of characters shown for the intermediate key segments in the title. | 2 | — (file only) |
Other Stored Data
The configuration file also keeps items such as the last opened path, the address-bar and computer history lists, your favourites, and the window and toolbar layout. These are managed by the program as you use it; there is normally no reason to edit them by hand.
O&O RegEditor writes the configuration file as it runs and when it exits. If you edit the file by hand, close the program first, or your changes may be overwritten.