Dotnetnuke community installation

Question

I have a dontnuke community website that was built long time ago. I have been task to migrate the website from windows server 2008 to 2012. I copied the website from 2008 server to 2012 and I create the website on IIS. I am getting an error on Configure Database Connection

Connection Error(s):
Index #: 0
Source: .Net SqlClient Data Provider
Class: 20
Number: 53
Message:

Answer 1

See if you can connect to the database using the data from your connection string using Sql Server Management Studio. That might give you a better clue.

Answer 2

Model the DNN connection string based on your SSMS credentials. Did you run SSMS on the server that runs the website? Did you verify that you can open tables and edit them?