Title: InternalError503's Replies | WordPress.org

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# InternalError503

  [  ](https://wordpress.org/support/users/internalerror503/)

 *   [Profile](https://wordpress.org/support/users/internalerror503/)
 *   [Topics Started](https://wordpress.org/support/users/internalerror503/topics/)
 *   [Replies Created](https://wordpress.org/support/users/internalerror503/replies/)
 *   [Reviews Written](https://wordpress.org/support/users/internalerror503/reviews/)
 *   [Topics Replied To](https://wordpress.org/support/users/internalerror503/replied-to/)
 *   [Engagements](https://wordpress.org/support/users/internalerror503/engagements/)
 *   [Favorites](https://wordpress.org/support/users/internalerror503/favorites/)

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## Forum Replies Created

Viewing 2 replies - 1 through 2 (of 2 total)

 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Kadence Security – Password, Two Factor Authentication, and Brute Force Protection] Plugin update completely broken](https://wordpress.org/support/topic/plugin-update-completely-broken/)
 *  Thread Starter [InternalError503](https://wordpress.org/support/users/internalerror503/)
 * (@internalerror503)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/plugin-update-completely-broken/#post-7416717)
 * [@dwinden](https://wordpress.org/support/users/dwinden/)
    [@aaron](https://wordpress.org/support/users/aaron/)
   D. Campbell
 * Thank you both for your assistance with this issue.
 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Kadence Security – Password, Two Factor Authentication, and Brute Force Protection] Plugin update completely broken](https://wordpress.org/support/topic/plugin-update-completely-broken/)
 *  Thread Starter [InternalError503](https://wordpress.org/support/users/internalerror503/)
 * (@internalerror503)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/plugin-update-completely-broken/#post-7416628)
 * [@aaron](https://wordpress.org/support/users/aaron/) D. Campbell
 * Thank you for your reply, However the error logs were empty.
 * [@dwinden](https://wordpress.org/support/users/dwinden/)
 * Yes, Your correct on all my browsers on multiple PC’s they all use ublock origin.
 * The adblocker was blocking the following URL:
    [https://s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js](https://s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js)
 * The list\filter was Fanboy+Easylist-Merged Ultimate List‎ (forums.lanik.us)
 * White-listing this resolved the issue and returned functionality of the plugin.
 * The real question remains why did this 3rd party script “mc-validate.js” brake
   the plugin and why is it needed, Also it presents a risk, If someone hijacked
   that script with a malicious one then anyone’s admin panels are fare game.
 * I would really like to know what its for?

Viewing 2 replies - 1 through 2 (of 2 total)