Login failed for user 'IIS APPPOOL\ASP.NET v4.0'

Question

I have a web project (C# Asp.Net, EF 4, MS SQL 2008 and IIS 7) and I need to migrate it to IIS 7 locally (at the moment works fine with CASSINI).

Locally in IIS I ha

Answer 1

ensure you have...

Trusted_Connection=false;

in your connection String

Answer 2

1_in SqlServer Security=>Login=>NT AUTHORITY\SYSTEM=>RightClick=>Property=>UserMaping=>Select YourDatabse=>Public&&Owner Select=>OK 2_In IIs Application Pools DefaultAppPool=>Advance Setting=>Identity=>LocalSystem=>Ok

Answer 3

Run this sql script

IF NOT EXISTS (SELECT name FROM sys.server_principals WHERE name = 'IIS APPPOOL\DefaultAppPool')
BEGIN
    CREATE LOGIN [IIS APPPOOL\DefaultAppPool] 
      FROM WINDOWS WITH DEFAULT_DATABASE=[master], 
      DEFAULT_LANGUAGE=[us_english]
END
GO
CREATE USER [WebDatabaseUser] 
  FOR LOGIN [IIS APPPOOL\DefaultAppPool]
GO
EXEC sp_addrolemember 'db_owner', 'WebDatabaseUser'
GO

Answer 4

I hate the ApplicationPoolIdentity. I always set a Windows User Account as the account on AppPools.

As adrift says, it does sound like a database security issue. So create an NT user account, assign it to the ASP.NET v4.0 AppPool and then grant it permission on the website folder and to the relevant table(s) in SQL.

Answer 5

Looks like it's failing trying to open a connection to SQL Server.

You need to add a login to SQL Server for IIS APPPOOL\ASP.NET v4.0 and grant permissions to the database.

In SSMS, under the server, expand Security, then right click Logins and select "New Login...".

In the New Login dialog, enter the app pool as the login name and click "OK".

You can then right click the login for the app pool, select Properties and select "User Mapping". Check the appropriate database, and the appropriate roles. I think you could just select db_datareader and db_datawriter, but I think you would still need to grant permissions to execute stored procedures if you do that through EF. You can check the details for the roles here.

Answer 6

I solved this problem using sql as following image.

Right click on db-> properties -> permission -> View Server permission -> and then select IIS APPPOOL\ASP.NET v4.0 and grant permission.