@dbeato said in GPO for compatibility mode: @Grey said in GPO for compatibility mode: A previous admin created a gpo to alter and add an entry under the hive HKEY_CURRENT_USER in Key path Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Ranges\Range66 which forces a single entry for compatibility mode. I've spent a lot of time testing and, while the setting is to apply once and not again, it doesn't seem to allow a user to add more sites to compatibility mode and keep that addition after a reboot. Has anyone successfully created a GPO for IE11 to enable CM for users to add items, while also pushing a list of our own? Is there a best method around for achieving this goal? I have not, I only keep adding it through GPO (In the medical field which they have many sites as this). Ditto - Just have to keep adding them via GPO. So glad we barely use IE 11 anymore.