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Editorial Team
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Asked: 2026-06-03T05:59:18+00:00

Here is the cenario: I have an account created on Active Directory named Test

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Here is the cenario:

I have an account created on Active Directory named Test.

This account have permission to read the instance of database.

I can access the data inside the domain> through SQL Server Visual Management Studio with Windows Authentication.

Now the problem:

How can I outside> the domain will access this data with a .NET Project Test?

I put this in my app.config:

<connectionStrings>
   <add name="CRM" connectionString="Data Source=server; Initial Catalog=catalog; Integrated Security=SSPI; providerName="System.Data.SqlClient"/>
</connectionStrings>
<system.web>
   <identity impersonate="true" userName="domain\user" password="pass"/>
</system.web>

But i’m still getting this error:

Login failed for user ‘x’. The user is not associated with a trusted SQL Server connection.

The last and not least, yes i do have both SQL and windows authentication mode enabled.

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1 Answer

  1. Editorial Team

    If SQL server is outside the domain then you have to provide the IP and port of server like this

    Change in connectionstring

    From 

    <add name="CRM" connectionString="Data Source=server; Initial Catalog=catalog; Integrated Security=SSPI; providerName="System.Data.SqlClient"/>

    To

    <add name="CRM" connectionString="Data Source=212.22.231.11,1433; Initial Catalog=catalog; Integrated Security=SSPI; providerName="System.Data.SqlClient"/>

    In the above statement 212.22.231.11 server which has Database hosted in SQL Server. and 1433 is port exposed by SQL Server

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