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3/5/2019 2:40 AM
 
Shahab Matapour

Joined: 3/4/2019
Posts: 3

Hello, 

I try to install DNN version 9.2.2 , first time , during installation on second step I encountered with below error : 

" 18% ERROR occurred - System.Data.SqlClient.SqlException (0x80131904): There is already an object named 'Authentication' in the database. "

Before second attempt : 

-  I delete database and create new one and new user and mapped to related database  

-  I removed source folder and give permission and I delete browser cookies and create new site in iis and select " .Net v4.5 classic " application pool. 

But installation process not running .

When I refresh browser it switch between these pages ( 1. http://localhost:2323/Install/InstallWizard.aspx

2. http://localhost:2323/Login.aspx?ReturnUrl=%2fInstall%2fInstallWizard.aspx ) 

How can I solve this problem ? 

 
 
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3/5/2019 4:01 AM
 
Michael Tobisch


Michael Tobisch's Avatar

https://www.dnnwerk.at
Joined: 6/27/2005
Posts: 2083
Shahab,

don't use .Net 4.5 Classic - DNN needs the integrated pipeline mode, therefore use the ".Net v4.5" app pool or create a new app pool using integrated pipeline mode.

When the SQL Server is running on the same machine or in the same domain, it is recommended to use integrated authentication on the SQL Server instead of SQL Server authentication. On the same machine, you can add a login for the app pool (IIS AppPool\[AppPoolName], eg. IIS AppPool\.Net v4.5). In the same domain, you can use the computer account of the web server (DOMAIN\ComputerName$, e.g. COMPANY\WEBSERVER$). During the installation, you have to add the db_owner role to this user.

Happy DNNing!
Michael

Michael Tobisch
DNN★MVP

dnn-Connect.org - The most vibrant community around the DNN-platform
 
New Post
3/8/2019 12:53 AM
 
Shahab Matapour

Joined: 3/4/2019
Posts: 3

Michael ,Thanks for your guide.  Finally I installed DNN. 
 
New Post
3/8/2019 4:47 AM
 
Michael Tobisch


Michael Tobisch's Avatar

https://www.dnnwerk.at
Joined: 6/27/2005
Posts: 2083
Shahab,

you are welcome. I am glad I could help you.

Happy DNNing!
Michael

Michael Tobisch
DNN★MVP

dnn-Connect.org - The most vibrant community around the DNN-platform
 
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