How to uninstall SendGuard using GPO?

This is for Classic Outlook users only.

Step 1: Open Server Manager
Step 2: Select Tools
Step 3: Group Policy Management
Step 4: Find the GPO you created to deploy SendGuard in your forest tree
Step 5: Right-click on the GPO and Edit
Step 6: Expand Computer Configuration → Policies → Software Settings → Software Installation
Step 7: Right-click on the Package you want to uninstall and select Properties
Step 8: Under the Deployment tab, Select the “Uninstall this application when it falls out of scope of management”.
Step 9: Close the GPO editor and select the GPO you just finished editing and remove the groups, users, and computers from the Security Filtering section.

The add-in will be automatically uninstalled on the next client machine start-up.