A list of common HRESULT error codes
I was looking for error code –2146232797 (hex 0x80131623, which turned out to be what is thrown by Environment.FailFast) and I’ve stumbled upon this treasure:
Also, here’s a great blog about deciphering an HRESULT:
And here's another good list from MSDN:
I sincerely wish you to never ever need this knowledge...