• Welcome to XF2 Addons. You can buy my Premium membership for $35 per year, and this gives you access to download any or ALL of the 250+ add-ons that I have developed for Xenforo 2.x. In addition, Premium members will get technical support. Once the Premium membership has expired you can continue to use the installed addons on your forum as long as you like.

Duplicate account check

Duplicate account check 1.8

No permission to download

Checks for duplicate user accounts.

If two or more valid users have logged into your forum with the same IP and User Agent, they will be flagged as duplicate and the admin will receive an email.

(Example of email)


(Example of Options page)


  • Checks for duplicate IP and User Agent.
  • Checks for user_state of 'valid'.
  • All phrases start with duplicateaccountcheck_ for your convenience.
  1. Download Andy-DuplicateAccountCheck-1.8.zip and unzip it.
  2. Copy the src/addons/Andy/DuplicateAccountCheck directory to your server.
  3. From the Admin Control Panel Install the add-on.
Database changes:

This add-on will add a table called 'andy_duplicate_account_check' to your database.
First release
Last update
5.00 star(s) 2 ratings

Latest updates

  1. See description

    Duplicate account check v1.8 changes: Corrected issue with Exclude usernames in the Options page.
  2. See description

    Duplicate account check v1.7 changes: Fixed issue where deleted accounts would still show as...
  3. See description

    Duplicate account check v1.6 changes: Now using finder for performing database queries.

Latest reviews

Superb, perfect to catch folk who want to cause trouble on the forums.
This is very helpful for myself and my staff in catching duplicate account registrations.