ERROR: Invalid syntax.

[sec13b]

reg delete "HKCU\Software\Classes\mscfile\shell\open\command" /f && reg delete HKCU\Software\Classes\ms-settings\shell\open\command /f && reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\App Paths\control.exe /f && reg delete HKCU\Software\Classes\exefile\shell\open\command /f && reg delete HKCU\Software\Classes\taskmgr\shell\open\command /f && reg delete HKCU\Software\Classes\AppID{921C1A8B-9F15-4DA4-9235-0472C3A216E6} /f
The operation completed successfully.
The operation completed successfully.
ERROR: Invalid syntax.
Type "REG DELETE /?" for usage.

[blue0x1]

reg delete "HKCU\Software\Classes\mscfile\shell\open\command" /f
reg delete "HKCU\Software\Classes\ms-settings\shell\open\command" /f
reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\App Paths\control.exe" /f
reg delete "HKCU\Software\Classes\exefile\shell\open\command" /f
reg delete "HKCU\Software\Classes\taskmgr\shell\open\command" /f
reg delete "HKCU\Software\Classes\AppID{921C1A8B-9F15-4DA4-9235-0472C3A216E6}" /f

reg delete "HKCU\Software\Classes\mscfile\shell\open\command" /f && reg delete HKCU\Software\Classes\ms-settings\shell\open\command /f && reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\App Paths\control.exe /f && reg delete HKCU\Software\Classes\exefile\shell\open\command /f && reg delete HKCU\Software\Classes\taskmgr\shell\open\command /f && reg delete HKCU\Software\Classes\AppID{921C1A8B-9F15-4DA4-9235-0472C3A216E6} /f
The operation completed successfully.
The operation completed successfully.
ERROR: Invalid syntax.
Type "REG DELETE /?" for usage.