The name PDB is part of the DLL. Renaming a DLL will not change its contents, so renaming a PDB will also not work. Instead, keep the original name.
Make sure your characters are set correctly, for example. use Microsoft characters and your own characters:
.symfix c:\debug\symbols
.sympath+ c:\path_to\myproject\bin\Release
.reload
Also, don't worry about the module name in WinDbg. It replaces some special characters, but does not affect the loading of characters. If you still have problems getting characters to load, enable the debug character
!sym noisy
, WinDbg . , . , .sympath+. ,
!sym quiet
.symopt+ 0x80000000 *** noisy
.symopt- 0x80000000 *** quiet