Visual Studio "Unable to start debugging on the web server. The web server did not respond in a timely manner."
I get the following error pretty regularly when compiling in Visual Studio and running my web application:
"Unable to start debugging on the web server. The web server did not respond in a timely manner. This may be because another debugger is already attached to the web server."
Normally this is after having debug the application once already. From the command line I run "iisreset /restart" and it fixes the problem.
How do I prevent this from happening in the first place?
The solution that worked for me:
Open Command Prompt (Run as Administrator)
Write
iisreset /restartNow, go back to your VS and debug. It will debug your solution.
It worked for Visual Studio 2013 and 2015 too in my case.
I find that this happens if I'm debugging with Firefox as my browser. When I exit Firefox the VS2005/8 debug session doesn't terminate. I have not found a solution for this (yet).
If this is what's happening with you then a quicker solution than running iisreset is to hit Shift-F5 when in Visual Studio and this will terminate the current debug session. You can then hit F5 and this will start a new debug session.
After trying all of the proposed solutions here and in other places (at least 10 different approaches), the only option that worked for me was:
- delete website and application pool on IIS
- re-create website and application pool on IIS (in my case, everything exactly the same config as before)
PS: I am using VS 2013 and IIS 7.5 (Win7).
I hope this saves someone else a few hours.
Go to task manager and end process aspnet_wp.exe before running application