Error: SOAP client returned status of 401 php-ews

I am using the code below to send email from Microsoft exchange: The log file shows that the error comes up after failing to send to recipient; see below:

[2024-12-17 13:27:41] Connecting with username: sender

[2024-12-17 13:27:41] Sending email to: [email protected]

[2024-12-17 13:27:42] Error: SOAP client returned status of 401.

Below is a snippet of my code, site is on windows server, tried reinstalling the libraries but still nothing. What have I missed and what can I check .

php ews Installation

Apache Error Log is below:

Apache Error Log

I have edited the php.ini Curl like as per the suggestions.

php.ini file

<?php
require '../vendor/autoload.php';

use \jamesiarmes\PhpEws\Client;
use \jamesiarmes\PhpEws\Request\CreateItemType;
use \jamesiarmes\PhpEws\ArrayType\ArrayOfRecipientsType;
use \jamesiarmes\PhpEws\ArrayType\NonEmptyArrayOfAllItemsType;
use \jamesiarmes\PhpEws\Enumeration\BodyTypeType;
use \jamesiarmes\PhpEws\Enumeration\MessageDispositionType;
use \jamesiarmes\PhpEws\Type\BodyType;
use \jamesiarmes\PhpEws\Type\EmailAddressType;
use \jamesiarmes\PhpEws\Type\MessageType;


function logMessage($message) {
    $timestamp = date('Y-m-d H:i:s');
    $logFile = __DIR__ . '/ews_debug.log';
    file_put_contents($logFile, "[$timestamp] $message\n", FILE_APPEND);
}

try {
    // Basic configuration 
    $host = 'domain.co.bz';
    $username = 'username';
    $password = 'usrPassword';
    
    logMessage("Connecting with username: $username");
    
    // Create client
    $client = new Client($host, $username, $password);
    
    // Only essential CURL options
    $client->setCurlOptions([
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,
    ]);
    
    // Create message
    $request = new CreateItemType();
    $request->Items = new NonEmptyArrayOfAllItemsType();
    $request->MessageDisposition = MessageDispositionType::SEND_ONLY;
    
    $message = new MessageType();
    $message->Subject = 'Test Email';
    $message->ToRecipients = new ArrayOfRecipientsType();
    
    $recipient = new EmailAddressType();
    $recipient->EmailAddress = '[email protected]';
    $message->ToRecipients->Mailbox[] = $recipient;
    
    $message->Body = new BodyType();
    $message->Body->BodyType = BodyTypeType::TEXT;
    $message->Body->_ = 'Test message from EWS';
    
    $request->Items->Message[] = $message;
    
    logMessage("Sending email to: " . $recipient->EmailAddress);
    
    $response = $client->CreateItem($request);
    logMessage("Email sent successfully");
    
    echo "Email sent successfully!";
    
} catch (Exception $e) {
    $error = "Error: " . $e->getMessage();
    logMessage($error);
    echo $error;
}
?>