How to Allow or Prevent Installation of Unsigned Gadgets in Windows 7

Information
This will show you how to allow to prevent all users in Windows 7 from installing gadgets that are not digitally signed to verify it's publisher. By default, both signed and unsigned drivers are allowed to be installed in Windows 7 by all users.
NOTE
Preventing the installation of unsigned gadgets does not affect any unsigned gadgets that were already installed or currently running. All users will still be able to select and add any unsigned gadgets that were already installed.

Through the Local Group Policy Editor

1. Open the Local Group Policy Editor.
2. In the left pane, click on to expand User Configuration, Administrative Templates, Windows Components, and Desktop Gadgets. (See screenshot below)



3. In the right pane, right click on Restrict unpacking and installation of gadgets that are not digitally signed and click on Edit. (See screenshot above)

4. To Allow the Installation of Unsigned Gadgets -

A) Select (dot) either Not Configured or Disabled. (See screenshot below step 6)
B) Go to step 6.

5. To Prevent the Installation of Unsigned Gadgets -

A) Select (dot) Enabled. (See screenshot below step 6)

6. Click on OK. (See screenshot below)



7. Close the Local Group Policy Editor window.
8. Log off and log on, or restart the computer to completely apply.