<ul><li>Set your Apache in <a href="https://httpd.apache.org/docs/2.4/en/mpm.html" target="_blank">multi-processing</a> mode or switch to <a href="https://nginx.org/" target="_blank">NGinx</a>.</li><li>If your Moodle is installed on your computer, try to deactivate your antivirus where Moodle is located. Do it with precaution.</li></ul>