HOWTO: debug the AppPool crashing

get latest WinDbg here
make dir c:\MySymbols

Alt+1 in WInDBG and execute

.sympath cache*c:\MySymbols;srv*https://msdl.microsoft.com/download/symbols
.reload

after that

!clrstack

if appears error message, do

.cordll -ve -u -l

If you see message ERROR: Unable to load DLL mscordacwks, take mscordacwks from original system and copy it into \mscorwks.dll\53A121FA5ae000\mscordacwks.dll

and repeat

.cordll -ve -u -l
!clrstack -p

It returns function calls with arguments. To dump the object's value use !do with HEX address, e.g.

!do 0x09fd0618 

Enjoy!