We've got a few dozens registered users on our website. They all have the right to publish, and edit articles in selected categories. Some of those users no longer need their access. So I can either block, or delete those ids. I'd prefer to delete them.

Question is about any drawback, or possible problem deleting a user might cause. Especially if that user is the author, or editor of published articles.

A quick test showed that Joomla! still displays such an article, but without showing the author. So it seems to be prepared for this case. But is there anything I didn't consider?

This is a Joomla! 4 site, if that matters at all.

  • It looks like you haven't earned your Informed badge yet, please take our tour. Commented Feb 1, 2022 at 23:47

1 Answer 1


All the records in the Joomla database that have created_by or modified_by fields will have the same issue when you delete users in Joomla's User Manager.

I don't think that removing users will break your Joomla 4 site. However, you might want to test:

  • Joomla's Contacts (com_contact) if there are any contact pages for those users and if they still work.
  • Joomla 4's new Workflow functionality. If you are using it, you'd better test if everything still works after removing a user.
  • Any 3rd party extension that uses Joomla's userid in their tables.

To get rid of the annoying "missing user" message in the back-end in Joomla's article manager, you could run some SQL queries to change the created_by/modified_by to another userid. Some SQL queries (backup your database first!) are available here: https://talikka.com/?view=category&id=8

Furthermore you could use a commercial extension RO Users to fix those missing users in Joomla and some 3rd party extensions: https://extensions.joomla.org/extension/ro-users/

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.