This is a first. Reviewing my event logs after today's June Win Updates on my Win 7 SP1 build yielded this gem shown below. Win Updates status display after updating showed all updates completed successfully. So hopefully this specific reg update was not required? Win Updates get worse with each passing month Log Name: Application Source: MsiInstaller Date: 6/10/2015 8:24:39 AM Event ID: 1039 Task Category: None Level: Warning Keywords: Classic User: SYSTEM Computer: xxxxxx Description: Product: Microsoft Office Professional Plus 2010. The application tried to modify a protected Windows registry key \Software\Classes\Interface\{BEF6E003-A874-101A-8BBA-00AA00300CAB}. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MsiInstaller" /> <EventID Qualifiers="0">1039</EventID> <Level>3</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2015-06-10T12:24:39.000000000Z" /> <EventRecordID>100970</EventRecordID> <Channel>Application</Channel> <Computer>xxxxx</Computer> <Security UserID="S-1-5-18" /> </System> <EventData> <Data>Microsoft Office Professional Plus 2010</Data> <Data>\Software\Classes\Interface\{BEF6E003-A874-101A-8BBA-00AA00300CAB}</Data> <Data>(NULL)</Data> <Data>(NULL)</Data> <Data>(NULL)</Data> <Data>(NULL)</Data> <Data> </Data> <Binary>7B39313134303030302D303031312D303030302D303030302D3030303030303046463143457D</Binary> </EventData> </Event>