diff --git a/PowerEditor/bin/nppIExplorerShell.exe b/PowerEditor/bin/nppIExplorerShell.exe
deleted file mode 100755
index d14630ea..00000000
Binary files a/PowerEditor/bin/nppIExplorerShell.exe and /dev/null differ
diff --git a/PowerEditor/installer/nppSetup.nsi b/PowerEditor/installer/nppSetup.nsi
index 0c26bd26..29ac3fab 100644
--- a/PowerEditor/installer/nppSetup.nsi
+++ b/PowerEditor/installer/nppSetup.nsi
@@ -653,7 +653,6 @@ Section -"Notepad++" mainSection
 		
 	IfFileExists "$INSTDIR\plugins\DSpellCheck.dll" 0 +11
 		MessageBox MB_YESNOCANCEL "Due to the stability issue, DSpellCheck.dll will be moved to the directory $\"disabled$\".$\nChoose Cancel to keep it this installation.$\nChoose No to keep it forever." /SD IDYES IDNO never IDCANCEL donothing ;IDYES remove
-	remove:
 		Rename "$INSTDIR\plugins\DSpellCheck.dll" "$INSTDIR\plugins\disabled\DSpellCheck.dll"
 		Delete "$INSTDIR\plugins\DSpellCheck.dll"
 		Goto donothing
@@ -1226,13 +1225,6 @@ SectionGroup "Themes" Themes
 	${MementoSectionEnd}
 SectionGroupEnd
 
-${MementoUnselectedSection} "As default html viewer" htmlViewer
-	SetOverwrite on
-	SetOutPath "$INSTDIR\"
-	File "..\bin\nppIExplorerShell.exe"
-	WriteRegStr HKLM "SOFTWARE\Microsoft\Internet Explorer\View Source Editor\Editor Name" "" "$INSTDIR\nppIExplorerShell.exe"
-${MementoSectionEnd}
-
 InstType "Minimalist"
 
 ${MementoSection} "Auto-Updater" AutoUpdater
@@ -1246,15 +1238,6 @@ ${MementoSection} "Auto-Updater" AutoUpdater
 	File "..\bin\updater\README.md"
 ${MementoSectionEnd}
 
-/*
-${MementoSection} "User Manual" UserManual
-	SetOverwrite on
-	IfFileExists  "$INSTDIR\NppHelp.chm" 0 +2
-		Delete "$INSTDIR\NppHelp.chm"
-	SetOutPath "$INSTDIR\user.manual"
-	File /r "..\bin\user.manual\"
-${MementoSectionEnd}
-*/
 
 ${MementoSectionDone}
 
@@ -1270,7 +1253,6 @@ ${MementoSectionDone}
     !insertmacro MUI_DESCRIPTION_TEXT ${autoCompletionComponent} 'Install the API files you need for the auto-completion feature (Ctrl+Space).'
     !insertmacro MUI_DESCRIPTION_TEXT ${Plugins} 'You may need those plugins to extend the capacity of Notepad++.'
     !insertmacro MUI_DESCRIPTION_TEXT ${Themes} 'The eye-candy to change visual effects. Use Theme selector to switch among them.'
-    !insertmacro MUI_DESCRIPTION_TEXT ${htmlViewer} 'Open the html file in Notepad++ while you choose <view source> from IE.'
     !insertmacro MUI_DESCRIPTION_TEXT ${AutoUpdater} 'Keep your Notepad++ update: Check this option to install an update module which searches Notepad++ update on Internet and install it for you.'
     ;!insertmacro MUI_DESCRIPTION_TEXT ${UserManual} 'Here you can get all the secrets of Notepad++.'
     ;!insertmacro MUI_DESCRIPTION_TEXT ${shortcutOnDesktop} 'Check this option to add Notepad++ shortcut on your desktop.'