Migration from CI3 to CI4 - SQLServer

I'm having difficulty configuring CI4 to connect to SQL Server.

I have the following configuration on CI3 that works perfectly:

PHP Code:

$db['ADMINBD04'] = array(
    'dsn'    => '',
    'hostname' => 'ADMINBD\NAME',
    'username' => 'userci',
    'password' => '#password123',
    'database' => 'BASE',
    'dbdriver' => 'sqlsrv',
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => (ENVIRONMENT !== 'production'),
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
); 


I tried to replicate at CI without success.

.evn

Code:

database.default.hostname = ADMINBD\NAME
database.default.database = BASE
database.default.username = userci
database.default.password = #password123
database.default.DBDriver = SQLSRV
database.default.port = 1433

Or in the Configuration file.

PHP Code:

    public $default = [
        'DSN'      => '',
        'hostname' => 'ADMINBD\NAME',
        'username' => 'userci',
        'password' => '#password123',
        'database' => 'BASE',
        'DBDriver' => 'SQLSRV',
        'DBPrefix' => '',
        'pConnect' => false,
        'DBDebug'  => (ENVIRONMENT !== 'production'),
        'charset'  => 'utf8',
        'DBCollat' => 'utf8_general_ci',
        'swapPre'  => '',
        'encrypt'  => false,
        'compress' => false,
        'strictOn' => false,
        'failover' => [],
        'port'     => 1433,
    ]; 


I don't know what I'm doing wrong, I thank you for your help.