How to Fix 'SSL certificate problem, verify that the CA cert is OK' in XAMPP 1.7.3?

SSL Verification Error: "certificate verify failed" with XAMPP 1.7.3

During HTTP Secure (HTTPS) communication, your application establishes a secure connection with a remote server by verifying its SSL certificate. In a recent upgrade to XAMPP 1.7.3, users have encountered the error "cURL error: SSL certificate problem, verify that the CA cert is OK."

This error typically indicates that the Certificate Authority (CA) certificate used to validate the server certificate is not recognized by your system's trust store. To resolve it, follow the steps below:

• Set cainfo Option:
  Since PHP 5.3.7, you can specify the location of the CA cert file using the curl.cainfo option in php.ini.

curl.cainfo = "PATH_TO/cacert.pem"

• Download cacert.pem:
  Download the CA cert file (cacert.pem) from https://curl.se/ca/cacert.pem and save it to a location accessible by PHP.
• Update php.ini:
  Add the above curl.cainfo line to your php.ini file and restart Apache.

Alternatively, if updating php.ini is not possible, you can set the cURL cainfo option for each cURL resource:

curl_setopt ($ch, CURLOPT_CAINFO, "PATH_TO/cacert.pem");

Once you have completed these steps, your HTTPS connections should establish successfully without verification errors.

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