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problem connecting to sql from wcf service running in IIS 6

Posted on 2012-08-13
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Last Modified: 2012-08-14
I have a WCF service running in IIS 6.  
In IIS it is set to “Enable anonymous access”.  I set the User name to “domain\useraccount” and set the password.
In the web config in the <system.web> section I have <identity impersonate="true"/>

This is the connection string: “Server=ANTWRISE\BCW;Database=DBNAME; Trusted_Connection=True;”

When I attempt to connect to the database I get this error:
Cannot open database "DBNAME" requested by the login. The login failed.
Login failed for user 'NT AUTHORITY\NETWORK SERVICE'.
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Question by:tj_ntwnt
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tj_ntwnt earned 0 total points
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I found the solution to this problem.  
I created a new Application Pool and set the user to a domain user.  
Made sure that the user could log in as a service:  To do this:
   Open the server's local security policy (start>run>secpol.msc), expand local polices and  browse to User Rights assignment. Once in User Rights Assignment, open up the “Log on as Service“ right. Any account or group in this list will be able to logon as a service. So, click Add User or Group, and add the user.Once the right is granted will need to reboot  server. Security settings are applied during the startup phase of any NT/2000/XP/2003 machine.
Added the user to the local group IIS_WPG.  To do this:  
  Go into computer management Start-> (right click on My Computer) > Manage.  Chose "Local Users and Grroups" open Groups and select IIS_WPG.  Add the user to it.

After this is done go under the Default Web Site and right click on the virtual directory that is running the WCF service and change the "Application Pool" to the new one that is running as a domain user.

That fixed the problem.
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