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Cannot open database "db" requested by the login. The login failed. Login failed for user 'NT AUTHO

Posted By:      Posted Date: October 24, 2010    Points: 0   Category :ASP.Net

I am working with visual studio 2010, ms sql server 08 R2, IIS 7.5, I am trying to connect to the database the following error appear every time I try to open the connection with the server:

Cannot open database "db" requested by the login. The login failed.
Login failed for user 'NT AUTHORITY\NETWORK SERVICE'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.SqlClient.SqlException: Cannot open database "db" requested by the login. The login failed.
Login failed for user 'NT AUTHORITY\NETWORK SERVICE'.

Source Error: 

Line 47:             //    "','&qu

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