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Account creation not prevented, but account was still not created
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Description

Can someone explain why this filter report [1] indicates that no action was prevented (The account should have been created), but then

(1) MediaWiki says the account does not exist https://fr.wikipedia.org/wiki/Sp%C3%A9cial:Contributions/Ces_accu-sations_graves_qui_seront_rap-port%C3%A9es_%C3%A0_O-range
(2) The CheckUser extension does list the account when showing the list of accounts on an IP.

Thank you.

  1. https://fr.wikipedia.org/wiki/Sp%C3%A9cial:Journal_du_filtre_antiabus/1211629

Event Timeline

Elfix raised the priority of this task from to Needs Triage.
Elfix updated the task description. (Show Details)
Elfix added projects: AbuseFilter, CheckUser.
Elfix changed Security from none to None.
Elfix added a subscriber: Elfix.

It is still possible for an account creation to fail after the AddNewAccount/AbortNewAccount hooks (used by AF/CU) run. E.g. an external authentication systems rejects it for whatever reason, or the database write fails.

I wonder if we should provide a means for those extensions to detect this afterwards though.