If this policy is disabled, all shutdown preferences can be changed by the user.
If this policy is enabled, any shutdown preferences explicitly set via policy cannot be changed by the user.
If this policy is not configured, no shutdown preferences can be changed by the user (previous behavior).
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Mozilla\Firefox\SanitizeOnShutdown |
| Value Name | Locked |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |