The first time I ran the symbols.cmd file in an Admin command prompt, I got: SYMCHK: dwmcore.dll FAILED - dwmcore.pdb mismatched or not found I changed the symbols.cmd file to run symcheck with verbose output (add "/v" option, i.e. SYMCHK /r /v), and ran symbols.cmd again and that second time I ran it, it worked (though it had nothing to do with the change I made to that file). SYMCHK: FAILED files = 0SYMCHK: PASSED + IGNORED files = 3 I Added /v parameter but still same result after 15 tries