You can tell the client not to check SSL, try this configuration:
$clientConfig = array( 'adapter' => 'Zend\Http\Client\Adapter\Curl', 'curloptions' => array( CURLOPT_FOLLOWLOCATION => TRUE, CURLOPT_SSL_VERIFYPEER => FALSE ), ); $this->_client = new \Zend\Http\Client('https://microsoft.de', $clientConfig);
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