f1 key

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\HELPCTR.EXE .

ren c:/windows/HelPpane.exe after takeown /f ....

.net framework offline (netfx3) enable

Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:J:\sources\sxs /LimitAccess