If you've been working in Visual Studio for any length of time then you'll probably be familiar with the following message.
You've set a breakpoint in the code from a 3rd party dependency for which the debug symbol file .pdb has not been loaded.
How can you tell what symbols have been loaded? Easy, it's in the Modules windows in the debug menu.
Once you launch the window, you can then view all the loaded modules and whether their symbols are loaded.
To load the symbols for your module, just right click on the module and select
Load Symbols as below.