Can't debug your React ASP.NET Core App? Reset VS 2017 to fix.
After pressing F5, I saw this, specifically:
"A debugger operation is taking a long time to complete. Click "Cancel" to stop waiting and terminate the process."
and 10 seconds I saw this, specifically:
Cannot connect to the target: connect ECONNREFUSED.
While looking in settings, I found this
So how did I fix this? By repairing Visual Studio. :( but it worked.