If this setting is ON, user will be prevented from modifying the filename proposed by MacroView when saving messages from Outlook.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | Software\Policies\MacroView\DMF\UserOptions |
| Value Name | MSGFilenameLocked |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |