Title: Heuristic Analysis Failed
Last modified: March 1, 2022

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# Heuristic Analysis Failed

 *  Resolved [Why Not Advertising, LLC](https://wordpress.org/support/users/whyknott/)
 * (@whyknott)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/heuristic-analysis-failed/)
 * Getting an Unexpected 404 response code at the heuristic analysis stage of scan
   and then it says CleanTalk Security Error. Says to contact support.

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Support [sergecleantalk](https://wordpress.org/support/users/sergecleantalk/)
 * (@sergecleantalk)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15415976)
 * Hello,
    Please, try to use the development version. We have made some fixes there.
   You could reinstall the plugin by following this instruction:
 * 1. Go to the WordPress Administrator Panel —> Plugins.
    2. Find the plugin “Security&
   Malware scan by CleanTalk” —> Deactivate. 3. After the automatic page refresh,
   find the plugin again “Security & Malware scan by CleanTalk” —> Delete. Confirm“
   Yes, delete these files”. 4. Download the plugin archive from here: [https://github.com/CleanTalk/security-malware-firewall/releases/download/dev-version/security-malware-firewall.zip](https://github.com/CleanTalk/security-malware-firewall/releases/download/dev-version/security-malware-firewall.zip)
   5. Go to Plugins —> Add New —> Upload Plugin. 6. Choose the downloaded archive
   and press “Install Now”.
 * If this didn’t help you can try the previous version:
 * [https://downloads.wordpress.org/plugin/security-malware-firewall.2.80.1.zip](https://downloads.wordpress.org/plugin/security-malware-firewall.2.80.1.zip)
 *  Plugin Support [katereji](https://wordpress.org/support/users/katereji/)
 * (@katereji)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15428960)
 * Hello [@whyknott](https://wordpress.org/support/users/whyknott/)
    We released
   the new 2.81.2 version of the Security plugin with all necessary fixes. Please,
   update the plugin.
 *  Plugin Support [katereji](https://wordpress.org/support/users/katereji/)
 * (@katereji)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15444724)
 * Hello.
    I’m going to mark this thread as “resolved”. If you have any further 
   questions, you can start a new thread or contact us via our private Ticket System:
   [https://cleantalk.org/my/support/open](https://cleantalk.org/my/support/open).
 *  [Rajat Singh](https://wordpress.org/support/users/couponzania/)
 * (@couponzania)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15617073)
 * This fixed the issue!
 *  Plugin Support [eugenecleantalk](https://wordpress.org/support/users/eugenecleantalk/)
 * (@eugenecleantalk)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15617112)
 * Hello [@couponzania](https://wordpress.org/support/users/couponzania/).
 * That’s great!

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Heuristic Analysis Failed’ is closed to new replies.

 * ![](https://ps.w.org/security-malware-firewall/assets/icon-256x256.gif?rev=2295231)
 * [Login Security, FireWall, Malware removal by CleanTalk](https://wordpress.org/plugins/security-malware-firewall/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/security-malware-firewall/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/security-malware-firewall/)
 * [Active Topics](https://wordpress.org/support/plugin/security-malware-firewall/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/security-malware-firewall/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/security-malware-firewall/reviews/)

 * 5 replies
 * 5 participants
 * Last reply from: [eugenecleantalk](https://wordpress.org/support/users/eugenecleantalk/)
 * Last activity: [3 years, 11 months ago](https://wordpress.org/support/topic/heuristic-analysis-failed/#post-15617112)
 * Status: resolved