When in the debugging state, "Debug" ---> "Window" ----> "Module"
Right-click the "Module" window and select "Symbol Load Information" , the "Symbol Load Information" dialog box will open .
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Information
Based on the Visual Studio installation settings and the changes made to the symbol settings in the "Options" dialog box, the directory to search for symbol files (PDB files) is displayed. -
Symbol Settings
Click this button to change the symbol settings in the "Options" dialog box ( "Debug" category, "Symbols" page). On this page, you can add or remove symbol locations, specify local cache locations (if using symbol servers), and control when symbol locations are searched.