Can WinDBG be made to find mscordacwks.dll in the symbol store?

Question

The Question

There are plenty of manual ways to make WinDBG find mscordacwks.dll without a symbol store (putting the file in the path somewhere, putting it in the same

Answer 1

Since no other solution has appeared and my workaround seems to handle everything nicely, I'm just going to keep on with that, and I would recommend anyone else who never wants to see the annoying Failed to load data access DLL, 0x80004005 error again do the same.

So to make this work for you (and everyone who uses your symbol store, so I really wish Microsoft would do this to save us all a lot of trouble) simply place the compressed DAC file (mscordacwks.dl_) by hand into the correct path within your local SYM store.

Here are the steps I follow to accomplish this:

1. In WinDBG do a !sym noisy
2. In WinDBG do a .cordll -ve -u -l
3. In WinDBG do another !CLRStack or other psscor2 command if necessary to force it to load symbols again
4. The symbol search logging will reveal the dll it’s looking for and where it’s looking in your symbol store by showing lines like this: C:\Symbols\mscordacwks_AMD64_AMD64_2.0.50727.4216.dll\4E1545829a3000\mscordacwks_AMD64_AMD64_2.0.50727.4216.dll which indicates two things:
   • you need the 64-bit mscordacwks.dll of version 2.0.50727.4216; see https://stackoverflow.com/a/12024171/1910619 for ways to get it
   • it needs to go in a subfolder called 4E1545829a3000 under a folder called mscordacwks_AMD64_AMD64_2.0.50727.4216.dll in your symbol store
5. Once you obtain the file, rename it according to the name WinDBG is looking for, e.g. "mscordacwks_AMD64_AMD64_2.0.50727.4216.dll"
6. Manually compress this file using makecab.exe like this: makecab /D CompressionType=LZX /D CompressionMemory=21 mscordacwks_AMD64_AMD64_2.0.50727.4216.dll mscordacwks_AMD64_AMD64_2.0.50727.4216.dl_
7. Copy that compressed file to the expected place in the symbol store. (That you found in step 4 above, so C:\Symbols\mscordacwks_AMD64_AMD64_2.0.50727.4216.dll\4E1545829a3000\mscordacwks_AMD64_AMD64_2.0.50727.4216.dl_ in our running example here.)