**Compatibility:** Firefox 62, Firefox ESR 60.2\
**CCK2 Equivalent:** N/A\
**Compatibility:** Firefox 62, Firefox ESR 60.2\
**CCK2 Equivalent:** N/A\
Add bookmarks in either the bookmarks toolbar or menu. Only `Title` and `URL` are required. If `Placement` is not specified, the bookmark will be placed on the toolbar. If `Folder` is specified, it is automatically created and bookmarks with the same folder name are grouped together.
**Compatibility:** Firefox 60, Firefox ESR 60\
Add bookmarks in either the bookmarks toolbar or menu. Only `Title` and `URL` are required. If `Placement` is not specified, the bookmark will be placed on the toolbar. If `Folder` is specified, it is automatically created and bookmarks with the same folder name are grouped together.
**Compatibility:** Firefox 60, Firefox ESR 60\
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `disableFirefoxUpdates`\
**Compatibility:** Firefox 60, Firefox ESR 60\
**CCK2 Equivalent:** `disableFirefoxUpdates`\
### DisableDefaultBrowserAgent
Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
### DisableDefaultBrowserAgent
Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
**Compatibility:** Firefox 75, Firefox ESR 68.7 (Windows only)\
**CCK2 Equivalent:** N/A\
**Preferences Affected:** N/A
**Compatibility:** Firefox 75, Firefox ESR 68.7 (Windows only)\
**CCK2 Equivalent:** N/A\
**Preferences Affected:** N/A
| `blocked_install_message` | This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else. This setting can be used only for the default configuration.
| `restricted_domains` | An array of domains on which content scripts can't be run. This setting can be used only for the default configuration.
| `blocked_install_message` | This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else. This setting can be used only for the default configuration.
| `restricted_domains` | An array of domains on which content scripts can't be run. This setting can be used only for the default configuration.
**Compatibility:** Firefox 78, Firefox ESR 78\
**CCK2 Equivalent:** N/A\
**Compatibility:** Firefox 78, Firefox ESR 78\
**CCK2 Equivalent:** N/A\