Created attachment 12682 [details] zonemapping When I set in GPO Zonemapping for Internet Explorer. Mapping would work (I think:) See enclosure, how are setted zones. But every gpo sync like gpupdate ends with error, that system ignored IE Zonemapping: Windows failed to apply the Internet Explorer Zonemapping settings. Internet Explorer Zonemapping settings might have its own log file. In GPResult can find error 87: <Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider Name='Microsoft-Windows-GroupPolicy' Guid='{AEA1B4FA-97D1-45F2-A64C-4D69FFFD92C9}'/><EventID>7016</EventID><Version>0</Version><Level>2</Level><Task>0</Task><Opcode>2</Opcode><Keywords>0x4000000000000000</Keywords><TimeCreated SystemTime='2016-11-22T13:22:17.551695800Z'/><EventRecordID>221301</EventRecordID><Correlation ActivityID='{947B44E8-B077-4FCF-A641-334402181B1B}'/><Execution ProcessID='1020' ThreadID='10160'/><Channel>Microsoft-Windows-GroupPolicy/Operational</Channel><Computer>kr-svec.pak.izscr.cz</Computer><Security UserID='S-1-5-18'/></System><EventData><Data Name='CSEElaspedTimeInMilliSeconds'>0</Data><Data Name='ErrorCode'>87</Data><Data Name='CSEExtensionName'>Internet Explorer Zonemapping</Data><Data Name='CSEExtensionId'>{4CFB60C1-FAA6-47F1-89AA-0B18730C9FD3}</Data></EventData></Event>