MathJax Load Failed – WP Security Plugin

After installing a WordPress security plugin call All-In-One WP Security, MathJax failed to load some JS including.


  • In the setting of the plugin, choose the tab Additional Firewall Rules
  • Uncheck the option at the bottom, i.e. Advanced Character String Filter


  • WordPress 5.3
  • All In One WP Security v4.4.2
  • MathJax-LaTex v1.3.11

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