Ø Open GPO management console
Ø Right click and edit the specific GPO or Create and link new GPO and Edit
Ø User Configuration>Security Settings>Software Restriction Policies
Ø Right Click Software restriction policies>create
Ø Right click on Additional Rules>New Hash Rule>Browse and select application exe/icon>open
Ø Apply>ok
Ø Close GPO
You are laughing now!
Screen Shot Example:
