How to reset Visual Studio debugging options to default?

Go to Tools->Import and Export Settings and you can reset to default settings for whatever environment you're in. https://msdn.microsoft.com/en-us/library/ms247075(v=vs.90).aspx

To restore the default exception settings, press the Restore button on the Exception Settings window. It looks like a checklist thing for some reason. https://msdn.microsoft.com/en-us/library/x85tt0dd.aspx

Launch Visual Studio 2017 (may be same with 2015) Menu

-> Tools

-> Import and Export Settings...

-> Select 'Reset all settings' radio button

-> Next

-> Select 'No, just reset settings, overwriting my current settings' radio button if you want to reset VS to a fresh install settings

-> Choose 'General' or setting you want to restore to.

-> Finish