Laravel ke SQL Server

gan saya mau tanya cara koneksi laravel ke SQL Server 2017. saya udah tambahin driver pdo_sqlsrv dan sqlsrv di PHP saya. tapi di laravel masih muncul eror could not find driver.

ini file .env nya :

 DB_CONNECTION=sqlsrv
DB_HOST=DESKTOP-N4A2JPP\SQLSERVER
DB_PORT=3306
DB_DATABASE=database
DB_USERNAME=DESKTOP-N4A2JPP\Admin
DB_PASSWORD=

ini file config/database.php :

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

'sqlsrv' => [
            'driver' => 'sqlsrv',
            'host' => env('DB_HOST', 'localhost'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'prefix' => '',
        ],

ini erornya :

 could not find driver (SQL: select top 1 * from [users] where [username] = admin)

mohon bantuannya.