【FAILED.】重装即可。。。
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINESOFTWARERegisteredApplications]
"Firefox"="Software\Clients\StartMenuInternet\FIREFOX.EXE\Capabilities"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXE]
@="Mozilla Firefox"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXECapabilities]
"ApplicationDescription"="Firefox enables safe and simple surfing. With a familiar interface, improved security features, including protection against identity theft, and integrated search you will get a lot more out of the Web."
"ApplicationIcon"="D:\Program Files\English\auxiliary\Mozilla Firefox\firefox.exe,0"
"ApplicationName"="Firefox"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXECapabilitiesFileAssociations]
".htm"="FirefoxHTML"
".html"="FirefoxHTML"
".shtml"="FirefoxHTML"
".xht"="FirefoxHTML"
".xhtml"="FirefoxHTML"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXECapabilitiesStartMenu]
"StartMenuInternet"="FIREFOX.EXE"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXECapabilitiesURLAssociations]
"ftp"="FirefoxURL"
"http"="FirefoxURL"
"https"="FirefoxURL"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEDefaultIcon]
@="D:\Program Files\English\auxiliary\Mozilla Firefox\firefox.exe,0"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEInstallInfo]
"HideIconsCommand"=""D:\Program Files\English\auxiliary\Mozilla Firefox\uninstall\helper.exe" /HideShortcuts"
"IconsVisible"=dword:00000001
"ReinstallCommand"=""D:\Program Files\English\auxiliary\Mozilla Firefox\uninstall\helper.exe" /SetAsDefaultAppGlobal"
"ShowIconsCommand"=""D:\Program Files\English\auxiliary\Mozilla Firefox\uninstall\helper.exe" /ShowShortcuts"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshell]
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellopen]
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellopencommand]
@="D:\Program Files\English\auxiliary\Mozilla Firefox\firefox.exe"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellproperties]
@="Firefox-Options"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellpropertiescommand]
@=""D:\Program Files\English\auxiliary\Mozilla Firefox\firefox.exe" -preferences"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellsafemode]
@="Firefox-Safe Mode"
[HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternetFIREFOX.EXEshellsafemodecommand]
@=""D:\Program Files\English\auxiliary\Mozilla Firefox\firefox.exe" -safe-mode"
参考资料：
http://forums.mozillazine.org/viewtopic.php?f=38&t=2423783#
https://arstechnica.com/civis/viewtopic.php?f=15&t=264451
https://support.microsoft.com/en-us/help/310516/how-to-add-modify-or-delete-registry-subkeys-and-values-by-using-a-reg
https://docs.microsoft.com/en-us/windows/desktop/shell/start-menu-reg