Error trying to connect to server


I'm trying to connect to my localhost server but I am getting an error message (see attachment). Yesterday it was working without a problem and after i finished working I closed the platform like i always do. What could be causing this?

 M. Williams 

Could you check to see if these services are running  (Control Panel\Administrative Tools\Services)

Yes, the first thing I did was to check the services and they were all running.
Can you access http://localhost/servicecenter/ with the admin credentials? 
No, I can't
If the Service Center Page Loads correctly , and you cannot access the admin acount, that means there's something wrong with the admin account credentials.
Someone installed another app that was using the same ports as Agile Platform. I had to unistall both and reinstall AP.

M. Williams