I have installed all of the available components of "MS_SQL_05" as a named instance on Win-7. I had a default instance running of MSSQL08. While installing the MSSQL05 instance I choose to use windows authentication.
But now I am having a problem and my database engine is not running, actually no components are working except I am able to login to Integration service.
I think there is some Username issue, because it is using UserName :'Anas-PC\Anas' which seems incorrect. Here is the error message
Cannot connect to ANAS-PC\MS_SQL_05.
Login failed for user 'Anas-PC\Anas'. (.Net SqlClient Data Provider)
Server Name: ANAS-PC\MS_SQL_05
Error Number: 18456
Line Number: 65536