I'm referring to both Continuum and the old one (removed) that was featured in builds pre-9879 and 9926, Explorer.exe right? And if so, any idea how can we remove the time stamp/time bomb of it?
Yeah, I'm wondering the same... Now that Windows RT 8.1 has got Update 3 which ports the pre-99xx menu to Windows 8.1, it would be super cool to ahve that ported to Windows 8.1 for x86 as well... I wonder what the files are, I would try it myself if I'd know...
It's next to impossible to port it back to 8.1 because this update is ARM-only. There are no binaries available for x86/x64. What you could try is to take a Server 2016 technical preview that still includes the pre-XAML menu and try to port it to Windows 10 client editions. Obviously the code is not located in Explorer.exe, someone claimed they are both the same for server and client when he compared the two of the same build. Someone in the mood and with the knowledge could try to attach WinDbg to Explorer, use the menu, make a dump and analyze the call stack, but I guess one would need private symbols to get a traceable result that doesn't cause headaches.
I'm not a coder but, if you remove the shell experience host package, the new crappy start menu is removed as well (the system will stay perfectly usable using classic shell). So I think is located there.