Enable/Disable the fullscreen mode on session start.
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\AnyDesk\Config\AdXXXXXXXXMsi\Defaults |
| Value Name | Image.InstaFullscreen |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |