Need to debug app that’s already running? Attach debugger instead of restarting from VS.
Steps:
1. Debug → Attach to Process (Ctrl+Alt+P)
2. Find your process (e.g., MyApp.exe, w3wp.exe for IIS)
3. Click Attach
Debugger attaches to running process – breakpoints work immediately!
Common Use Cases:
– Debug production issues on server
– Debug Windows Service
– Debug IIS-hosted app
– Debug multiple instances of same app
Pro Tip: Check “Show processes from all users” to see system services.