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Forums Using DNN Platform Administration and Configuration

Unable to connect to database.

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Dillip
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2/9/2022 8:32 AM

While installing DNN as per the documentation, It is showing Sql login failed.

I have created a Database for DNN and also a Login name & password created and mapped to the DNN Database.

Could you please help me in figuring out the issue.

Thanks in advance.

 

Sebastian Leupold
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2/9/2022 8:58 PM
despite the documentation, I prefer using integrated Windows login. This requires to create a SQL Server account named "IIS AppPool\[AppPoolName]" where you need to replace "[AppPoolName]" by the name of your IIS Application Pool. This Windows Account also needs to be granted write permission for the IIS Website hosting your DNN instance and in Advanced Settings of the IIS App Pool, "Identity" needs to be set to "ApplicationPoolIdentity".
In your web.config, you don't need to specify user or password, just add "Integrated Security=true".
This is the easiest and most secure configuration.
Joe Craig
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2/10/2022 9:01 AM
In addition to what Sebastian said, you should use SSMS (SQL Server Management Studio) to verify your credentials for connecting to the database.
Sebastian Leupold
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2/10/2022 9:29 AM
SSMS is usually the best tool to manage your SQL Server and databases, including backups. If, for some reason, you can't install it on the server, you may check login credentials as well using ODBC manager in computer management.
Michael Tobisch
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2/10/2022 9:29 AM
If your IIS and SQL Server are not on the same machine it could be also Firewall rules that block the access.

Happy DNNing!
Michael

Michael Tobisch
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Dillip
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Posts: 9
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2/11/2022 10:17 AM
I tried with integrated Security but showing up error as below :

Database Connection Error

ERROR:Index #: 0
Source: .Net SqlClient Data Provider
Class: 11
Number: 4060
Message: Invalid Database

Index #: 1
Source: .Net SqlClient Data Provider
Class: 14
Number: 18456
Message: Sql login failed
Sebastian Leupold
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2/11/2022 10:36 AM
did you check the SQL server user account for its default database (the user needs to have access) and did you grant access permission to this user for the DNN database you are trying to access?

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