APP_NAME=Incorptech
APP_ENV=local
APP_KEY=[key da aplicação está ok]
APP_DEBUG=true
APP_LOG_LEVEL=debug
APP_URL=http://localhost

DB_CONNECTION=sqlsrv
DB_HOST=[host está ok]
DB_PORT=1433
DB_DATABASE=[nome do banco]
DB_USERNAME=[usuario do banco]
DB_PASSWORD=[senha do banco]

'default' => env('DB_CONNECTION', 'sqlsrv'),

        'sqlsrv' => [
        'driver' => 'sqlsrv',
        'host' => env('DB_HOST', 'localhost'),
        'port' => env('DB_PORT', '1433'),
        'database' => env('DB_DATABASE', 'nomedobanco'),
        'username' => env('DB_USERNAME', 'usuario'),
        'password' => env('DB_PASSWORD', 'senha'),
        'charset' => 'utf8',
        'prefix' => '',
    ],

public function testeDB()
    {
        $select = DB::select('select * from conta');
        return $select;
    }

PHP Fatal error: Invalid handle returned in ...vendorlaravelframeworksrcIlluminateDatabaseConnectorsConnector.php on line 67

protected function createPdoConnection($dsn, $username, $password,
    $options)
{
    if (class_exists(PDOConnection::class) && ! $this->isPersistentConnection($options)) {
        return new PDOConnection($dsn, $username, $password, $options);
    }

    return new PDO($dsn, $username, $password, $options);
}