Title: Problem with defender
Last modified: December 31, 2025

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# Problem with defender

 *  Resolved [fredmomo](https://wordpress.org/support/users/fredmomo/)
 * (@fredmomo)
 * [5 months, 1 week ago](https://wordpress.org/support/topic/problem-with-defender/)
 * Hi everyone, I have a problem with defender on some wordpress site, when I go
   to _“defender>firewall>logs”_ I have a prompt who tell:
 * **“An error occurred while synchronizing the Custom IP List.”**
 * Someone could help me ?
 * Thanks, best regard

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Support [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/)
 * (@wpmudev-support2)
 * [5 months, 1 week ago](https://wordpress.org/support/topic/problem-with-defender/#post-18771506)
 * Hello [@fredmomo](https://wordpress.org/support/users/fredmomo/)
 * Hope you are doing well today.
 * Since the global IP list is stored in our servers, it needs to be synced with
   HUB, if your site is having issues syncing with HUB, that error will appear.
 * I ran some tests in my lab site but couldn’t replicate this issue.
 * We may need to check the site logs in our end, Could you please provide us a 
   list of the site that having this issue, so we can test this further on our end?
 * You can send us an email and share these information: [wpsupport@incsub.com](https://wordpress.org/support/topic/problem-with-defender/wpsupport@incsub.com?output_format=md)
 * Subject: ATTN: WPMU DEV support – wp.org
 * Please send:
    – Link to your WordPress site – Link back to this thread for reference(
   [https://wordpress.org/support/topic/topic-title/](https://wordpress.org/support/topic/topic-title/))–
   Any other relevant URLs/info
 * To ensure we don’t miss your email, please let us know here once you’ve submitted
   the form and make sure you use “ATTN: WPMU DEV support – wp.org” as the email
   subject.`
 * Best Regards
    Amin
 *  Thread Starter [fredmomo](https://wordpress.org/support/users/fredmomo/)
 * (@fredmomo)
 * [5 months, 1 week ago](https://wordpress.org/support/topic/problem-with-defender/#post-18771553)
 * Hi, I am fine thank you
 * If it’s just the synchro with the hub, it is not important for me
 * Thank you for your help, best regard and happy new year
 *  Plugin Support [Nebu John – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport14/)
 * (@wpmudevsupport14)
 * [5 months, 1 week ago](https://wordpress.org/support/topic/problem-with-defender/#post-18771974)
 * Hi [@fredmomo](https://wordpress.org/support/users/fredmomo/),
 * Please note that, without syncing, the Global IP list won’t be updated, and the
   Global AntiBot Global Firewall feature may not work as expected.
 * Since you do not need any further assistance with this, I will mark this ticket
   as resolved. Please feel free to reach out to us if you need any further help.
   We are here to help.
 * Thank you and happy New Year!
 * Best Regards,
    Nebu John

Viewing 3 replies - 1 through 3 (of 3 total)

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 * ![](https://ps.w.org/defender-security/assets/icon-256x256.gif?rev=3435930)
 * [Defender Security - Malware Scanner, Login Security & Firewall](https://wordpress.org/plugins/defender-security/)
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 * 3 replies
 * 3 participants
 * Last reply from: [Nebu John – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport14/)
 * Last activity: [5 months, 1 week ago](https://wordpress.org/support/topic/problem-with-defender/#post-18771974)
 * Status: resolved