Disable function "Show Character" in wireless connection

1.Create a new GPO and link it to the OU where you want the policy applied.

2.Edit the new GPO and navigate to User Configuration\Policies\Windows Settings\Security Settings\Software Restriction Policies.

3.In the Object Type pane, double click on “Enforcement” and change the “Apply Software Restriction Policies to the following:” and check “All Software Files” which will include DLL files.

4.Next go to the “Additional Rules” node, right click on the blank area and add a new path rule.

5.In the Path field type C:\Windows\System32\wlanui.dll and select the security level as Disallowed. wlanui.dll is the Wireless Lan User Interface GUI.

6.Go to Computer Configuration\Policies\Administrative Templates\System\Group Policy and set the “User Group Policy loopback processing mode” to Enabled and select Replace which will override any other policies this software policy will take precedence.