Use WinDbg and SOS.DLL with multiple CLR instances SxS in the same process

If you debugging a managed app that has more than one CLR instances loaded in the same process (typically V2/V1.1 + V4 at the time of writing), you’ll probably run into a problem that SOS commands doesn’t quite work in this case. More specifically, if you do a .loadby sos clr, all SOS commands work just fine. But if you unload the SOS (by .unload command) and then load the SOS for V2 by using .