Is the breakpoint a normal red circle or has a cautious side in it?
If this is a red circle, then the likely problem is "Only my code," and VS thinks that this is not your code. Go to the debugger β Tools β Options and turn off βOnly my codeβ. This should fix the problem.
If he has a warning sign, then hover over the breakpoint and see what the error says, and please send it back as a comment / change to your answer.
EDIT OP hollow circle with "No characters" prompt
Open the modules window (debugger β windows β Modules). Then scroll down to the DLL containing your code. Right-click on the window and select "Download Symbols". This will probably open the file open dialog. Go to your characters and click OK.
source share