[Version]
signature="$Windows NT$"

[DefaultInstall]
AddReg = ChgHtmlIcon.AddReg
DelReg = ChgHtmlIcon.DelReg

[ChgHtmlIcon.AddReg]
HKLM,"SOFTWARE\Classes\htmlfile\DefaultIcon",,0,%IconPath%
HKLM,"SOFTWARE\Classes\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\htmlfile\DefaultIcon",,0,%IconPath%
HKCU,"Software\Classes\Opera.HTML\DefaultIcon",,0,%IconPath%
HKLM,"Software\Classes\Opera.HTML\DefaultIcon",,0,%IconPath%

[ChgHtmlIcon.DelReg]
HKCU,"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm"
HKCU,"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html"

[Strings]
IconPath = "%SYSTEMROOT%\explorer.exe,14"

------解决方案--------------------

是的office也会替换图标，另外你要确认F盘那个路径下ico文件确实存在么