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This page is a translated version of a page Help:Unified login and the translation is 62% complete.

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ヘルプページ 統一ログイン
統一ログインとはウィキメディア財団プロジェクトの大半で単一のログイン情報が使えるようになる仕組みのことです。これにより利用者は、1度登録したあとは、ウィキメディア全体をとおして一貫性のあるアイデンティティを保つことができます。その他の利点として、この仕組みを使うとなりすましの危険性をなくすことができ、ひとつひとつログインする手間をかけずに多数のプロジェクトを訪問することができます。すでにアカウントをもっているプロジェクトで Special:MergeAccount を開き、メッセージに従って行くと、統一ログイン情報を作成できます。

Sister projects:






Currently, all new accounts are unified by default, and older accounts can be manually unified by their users. To do so, go to Special:MergeAccount on a wiki where you already have an account. The wiki where the account of that username has the most contributions will become the home wiki,[1] and its email address and password will be exported to all other accounts.

At Special:MergeAccount, you will be asked to enter your password for verification. Then, any wikis with the same authenticated e-mail address and password as the home wiki will be unified. You can enter the passwords of additional accounts if any are listed.

When you are finished, or if you have already unified your account, you will receive the message "Login unification complete!" You will be able to log in at any public Wikimedia wiki with your home wiki username and password, unless an existing non-unified account has the same username.



Registering a username on any Wikimedia wiki automatically reserves that name on all the others; this means different users can no longer register the same account on different wikis. Users only need to set and confirm their email address in one account. Changing the password in any wiki changes it in all wikis accordingly. Special:UserLogin now logs the user in to every unified wiki simultaneously, and navigating away from the login page before it is fully loaded may result in incomplete login (i.e. users may not log in to all wikis successfully).

Additional wikis will be added to the user's login the first time they are visited. For example, a regular user at Commons and German Wikipedia will not automatically login to English Wikibooks, but if that user visits English Wikibooks once while logged in, they will then login to English Wikibooks every time (to see which wikis you log in to, see Special:CentralAuth).


  • Some things are still local:
    • User rights are mostly local, which means that administrators will not have administrator access everywhere. Global groups such as global rollback, global sysop, global edit-interface and global IP block exemption can now be requested at Steward requests/Global permissions. Global rollback and global sysop are only granted to users who are demonstrably active on other wikis aside from their home wiki.
    • User preferences are local, although the email address only needs to be set and confirmed in one place. You can continue to have different preferences on different sites.
    • Notification when you receive a new message is still local; you will only see the "new messages" box for the site you're looking at. This may change in the future.
  • Users can still have differently named accounts on two sites; however, these accounts will not be linked for unified login.
  • The unified login system is only available for the Wikimedia Foundation wikis; sites which run on the MediaWiki software but are not operated by the Foundation will continue to have separate account systems, even if they installed Extension:CentralAuth, which is responsible for the unified login system.


The system will automatically merge identically named accounts if they have the same authenticated email address, or the user can correctly provide their password.

Because registration has for a long time been separate for each wiki, there are many user names that belong to different people on different projects. The new system only allows one user per name, so there are some cases where accounts will need to be renamed. This must be done manually by a bureaucrat or stewards (see Steward requests/Usurpation).





初期の議論はSingle loginで見ることができます。

Brion Vibber is committed to this project. He discussed how this might work in the December 2005 Berlin roundup, uploaded implementation notes to the code base in April 2006, and it was the subject of a presentation at Wikimania 2006.

Brion announced a successful migration test in November 2006. Data collection took two hours and automatic merging took five hours. 4,457,075 primary accounts were confirmed, with 578,128 secondary accounts merged automatically based on matching email addresses or by cannibalizing unused accounts. 134,242 secondary accounts will need to be merged with user interaction (71,741 unique user names have accounts left unmerged).

2008年3月に管理者限定で統一ログインが実施され、アカウント衝突解決のためSteward requests/Usurpationが作成されました。これは2008年5月27日に全ての利用者に開放されました。



Yes, but you have to request your account renaming on all wikis separately.



Note that usernames on most individual projects can preemptively be renamed.


First, note that the existence of the other account does not necessarily stop you from getting the global name. However, if an account with your chosen name which is not controlled by you has more edits, or certain group membership such as sysop or bureaucrat (check here), you may not be the one with the superior claim on this username. If this is the case, you will probably have to ask them to rename, or you may have to rename yourself.

When you merge your account, it will tell you that the merge is incomplete, but it will also create the global account for you at that time. You will be able to use the global account on all wikis except for the ones where the named account is not under your control.









バグ complete bug list


  1. Sysop or bureaucrat status takes higher precedence than edit count to decide which is the home wiki for a global account, but not to decide which local account (the "winning master account") can get the username globally if there are conflicts.

ローカル: ブロックされた利用者 – 未登録利用者 – 新規登録済み利用者 – 登録済み利用者 – 自動巡回者 – ボット – 管理者 – ビューロクラット – オーバーサイト – チェックユーザー – IP ブロック適用除外 – インポート担当者 – 中央管理通知管理者 – アップロード者
グローバル: ロックされたアカウント – 統一済み利用者 – ボット – ロールバッカー – 不正利用フィルター編集者 – インターフェース編集者 – IP ブロック適用除外 – 新ウィキインポート担当者 – 管理者 – オンブズマン – 創設者 – スタッフ – WMF researcher – システム管理者 – スチュワード