VS2013 MFC Symbols missing

My Visual Studio 2013 is unable to load MFC symbols. After setting some options in Visual Studio, I am able to load symbols for most of the Windows DLLs, but MFC symbols (more exact: mfc120ud.i386.pdb and mfc120d.i386.pdb) are still missing.

What I have tried so far:

• Enabled the Microsoft Symbol Servers.
• Under "Automatically load symbols for:" selected "All modules, unless excluded"
• Unchecked "Just My Code"
• Searched locally for the files

Any ideas?

The default setting of Microsoft Symbol Servers only uses HTTP protocol, but loading MFC symbols seems to require HTTPS.

When https://msdl.microsoft.com/download/symbols is added to the symbol file locations, the missing MFC symbols were loaded successfully.