This policy setting blocks all add-ins that are not managed by the "List of managed add-ins" policy setting.
If you enable this policy setting, and the "List of managed add-ins" policy setting is also enabled, all add-ins are blocked except those that are configured as 1 (always enabled) or 2 (configurable by the user) in the "List of managed add-ins" policy setting.
If you disable or do not configure this policy setting, users can enable or disable any add-ins that are not managed by the "List of managed add-ins" policy setting.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | software\policies\microsoft\office\16.0\ms project\resiliency |
| Value Name | restricttolist |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |