Setting the policy to True or leaving it unset means that, with appropriate permissions, users, apps, and extensions can enter Fullscreen mode (in which only web content appears).
Setting the policy to False means users, apps, and extensions can't enter Fullscreen mode.
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Google\Chrome |
| Value Name | FullscreenAllowed |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |