Connecting to an SQL server using a different domain account - sql-server

Question

I am currently trying to connect to an SQL server using a different domain/username that has permissions for querying the server. Here is the powershell just to test whether or not the connection works,
$connectionString = "Server=<my_server>;Database=<db>;User ID=<domain>\<testuser>;Password=<password>;Trusted_Connection=False;Encrypt=True;TrustServerCertificate=True;";
$connection = New-Object System.Data.SqlClient.SqlConnection($connectionString);
$connection.Open();
$connection.Close();
I end up getting this error.
Exception calling "Open" with "0" argument(s): "Login failed for user '<testuser>'.
I am certain that the username and password is correct. As that's what's in the Client Settings.
But I am wondering if there's additional arguments needed to add to the connection string?

Answer 1

This task needed to be automated, but the solution was to connect to the server using -Credentials to login to the desired user.
$computerName = 'SQLServer'
$adminUsername = 'username'
$adminPassword = ConvertTo-SecureString 'password' -AsPlainText -Force
$adminCreds = New-Object PSCredential $adminUsername, $adminPassword
Invoke-Command -ScriptBlock {
$SQLServer = "sqlserver"
$SQLDBName = "database"
$uid ="account"
$pwd = "password"
$SqlQuery = "SELECT TOP (12) [attribute1]
FROM [table].[dbo].[AAG00200];"
$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$SqlConnection.ConnectionString = "Server = $SQLServer; Database = $SQLDBName; Integrated Security = True; User ID = $uid; Password = $pwd;"
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
$SqlCmd.CommandText = $SqlQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$SqlAdapter.Fill($DataSet)
} -ComputerName $computerName -Credential $adminCreds