Removing the Outlook Extension
To remove the Outlook Extension from users' machines manually:
- Close Microsoft Outlook, if it is open.
- Go to Start > Control Panel > Programs and Features.
- Locate the Outlook Extension and follow the instructions to remove it.
When using GPOGroup Policy Object (GPO) is an Active Directory centralized management and configuration system that controls what users can and cannot do on a computer network., you can remove the Outlook Extensions directly from GPO. For more information refer to Removing the Outlook Extension using Group Policy.