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< Manual:Hooks
Available from version 1.5.8
Removed in version 1.33
Can be used to cancel user account creation
Define function:
public static function onAbortNewAccount( $user, &$message ) { ... }
Attach hook:

In extension.json:

	"Hooks": {
		"AbortNewAccount": "MyExtensionHooks::onAbortNewAccount"

For MediaWiki ≤1.25:

$wgHooks['AbortNewAccount'][] = 'MyExtensionHooks::onAbortNewAccount';
Called from:File(s): SpecialUserlogin.php

For more information about attaching hooks, see Manual:Hooks.
For examples of extensions using this hook, see Category:AbortNewAccount extensions.


  • $user: the User object about to be created (read-only, incomplete)
  • $message: out parameter: error message to display on abort


  • Return false to cancel account creation.


In MediaWiki 1.27, the hook was deprecated and superseded by AuthManager functionality. It was removed in MediaWiki 1.33. Any logic in it must be moved to a class implementing PreAuthenticationProvider, into the testForAccountCreation and testUserForCreation methods.