Why does a PayPal payment fail with the message «SSL certificate problem: unable to get local issuer certificate»?

dmitrii_fediuk · February 7, 2016, 12:52am

PayPal NVP CURL connection error #60: SSL certificate problem: unable to get local issuer certificate

magento/magento2/blob/6ce74b2/app/code/Magento/Paypal/Model/Api/Nvp.php#L1180-L1180


      
          $config = ['timeout' => 60, 'verifypeer' => $this->_config->getValue('verifyPeer')];

github.com

magento/magento2/blob/6ce74b2/app/code/Magento/Paypal/Model/AbstractConfig.php#L131-L141


      
          $underscored = strtolower(preg_replace('/(.)([A-Z])/', "$1_$2", $key));
          $path = $this->_getSpecificConfigPath($underscored);
          if ($path !== null) {
              $value = $this->_scopeConfig->getValue(
                  $path,
                  ScopeInterface::SCOPE_STORE,
                  $this->_storeId
              );
              $value = $this->_prepareValue($underscored, $value);
              return $value;
          }

github.com

magento/magento2/blob/6ce74b2/app/code/Magento/Paypal/etc/adminhtml/system/express_checkout.xml#L367-L372


      
          <field id="verify_peer" translate="label" type="select" sortOrder="35" showInDefault="1" showInWebsite="1">
              <label>Enable SSL verification</label>
              <config_path>payment/paypal_express/verify_peer</config_path>
              <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
              <attribute type="shared">1</attribute>
          </field>

So, you can solve the problem by disabling the «PayPal Express Checkout» → «Basic Settings - PayPal Express Checkout» → «Advanced Settings» → «Enable SSL verification» option or «PayPal Website Payments Standard» → «Basic Settings - PayPal Website Payments Standard» → «Advanced Settings» → «Enable SSL verification» option.

A better solution: How to fix the «SSL certificate problem: unable to get local issuer certificate» issue.