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Username Restrictions 1.1.0

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Compatible XF 1.x versions
1.4, 1.5
MIT Licence
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Prevents users from selecting a username which matches user groups. Ensures user group tagging works as expected.
  • Prevents explicit matches.
  • Optionally prevent partial matches.
  • Optionally enforce on administrators.


I recommend using Add-on install & upgrade to install this addon.

Contributing features or bug fixes
Please create a Github Pull request via the "More Information" link.


If you appreciate this addon, please consider a contribution via PayPal. Details will be provide via private conversation.

Please contact me if you wish for different licencing arrangements.
First release
Last update
5.00 star(s) 1 ratings

More resources from Xon

Latest updates

  1. Feature Update

    Prevent usernames starting with [, as this breaks user mentions/tagging
  2. Bugfix release

    Do not error on attempting to enter a blank username.
  3. Minor bugfix

    Fix "Undefined variable: username" warning from typo in fallback codepath

Latest reviews

This is really something I had not thought about and thanks to Xon for doing so, I won't have to worry about it in the future! Excellent idea to avoid any problems, before they can even occur.