如何在忘记密码的情况下打开电脑

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不小心忘了密码，无法登录电脑？无法打开电脑的确让人沮丧，尤其是需要存取重要文件的时候。好在这不是世界末日，本文会教你许多简单的方法，让你在没有密码的情况下也能登录Mac或PC。

方法 1
方法 1 的 7:

在线更改Windows 8或10的密码

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    [1] 打开另一台电脑的网络浏览器，前往 https://account.live.com/resetpassword.aspx 。网站加载完毕后，选择“我忘记了密码”，然后点击“下一步”。
    • 只有在一开始设置电脑时注册了Microsoft帐户，并用它登录电脑，才能使用这个方法。创建Microsfot帐户是默认设置，除非你当时选择了另一个选项，否则很可能已经有了一个帐户。
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    Microsoft帐户通常以live.com、hotmail.com或outlook.com结尾。如果网站无法识别你的帐户名，要确保你输入了完整的地址。比如输入 joesmith@live.com ，而不是joesmith。电子邮件地址栏下方有一张图片，根据指示输入图片里面的字符，然后点击“下一步”。
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    重置密码之前，选择你要用哪一种方式获取验证身份的安全代码：
    • 你在创建Microsoft帐户时会提供一个电话号码，以及一个用来恢复帐户的非Microsoft电子邮件地址。选择电子邮件地址或电话号码，然后点击“发送安全代码”。
    • 如果你不再使用之前输入的电话号码或邮件地址，可以点击“我没有其中任何一项”。页面上会有一行字，写着“请输入另一电子邮件地址，该地址应不同于你所尝试恢复的电子邮件地址”，在下面的空栏中输入你可以使用的其它电子邮件地址。点击“下一步”，让Microsoft将安全代码发送到新的电子邮件地址。
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    在“输入安全代码”下方的空格里输入你收到的代码，点击“下一步”重置密码。
    • 通过短信或电子邮件收到安全代码后，你现在就能输入新密码。确认新密码后，就可以再次用Microsoft帐户登录Windows。
    • 如果你无法使用之前输入的电话号码或用来恢复帐户的电子邮箱，会转到另一个页面填写表格。尽量多填写一些有助于验证身份的信息。除了基本的联络信息，你也能确认帐单信息和之前的密码。所有数据会发送到Microsoft公司，工作人员会调查你的信息，然后将密码重置链接发到你使用的其它电子邮件地址。
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方法 2
方法 2 的 7:

在安全模式下更改Windows 8或10的密码

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    [2] 这个重启操作和平时有点不同。启动电脑到登录界面，然后点击“电源”图标。按住键盘上的 Shift 键，同时点击“重启”。想进入安全模式，就要进行两次“重启”，这是第一次。
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    电脑重启后，在“选择一个选项”屏幕上，点击“疑难解答”，选择“高级选项”，然后点击“启动设置”。点击“重启”，让电脑启动到新的选项屏幕。
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    每种型号的电脑需要按的键都不同。现在电脑就会进入安全模式的登录屏幕。
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    点击箭头图标，选择“管理员”帐户，不需要输入密码。
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    同时按下 Win 和 X 键，点击“控制面板”，然后选择“用户帐户”。
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    在帐户列表中，选择需要重置密码的用户帐户。
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    现在你可以为常用的帐户设置新密码了，需要输入两次以作确认，最后点击“保存”。
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    同时按下 Ctrl 、 Alt 和 Del 键，点击“电源”图标，然后点击“重启”。电脑重启时会恢复正常模式，你可以用本来的用户名和新密码登录。
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方法 3
方法 3 的 7:

用密码重置光盘更改Windows密码

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    [3] 只有之前创建过密码重置光盘或USB闪存驱动器，才能使用这个方法。Windows 7和以上的系统都能使用这个方法。至于Windows XP，请查看 在Windows XP系统中找回密码 。
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    如果你输入的密码不对，屏幕上会出现一条错误信息，写着：“用户名或密码不正确”。点击“确定”。
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    这会启动密码重置向导，点击“下一步”。
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    屏幕上的菜单会列出电脑里的所有磁盘驱动器。选择密码重置光盘的所在位置，点击“下一步”。
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    选择你记得住的一串字符。再次输入密码，以确认它是正确的，点击“下一步”继续。你也可以在“输入新密码提示”下方的方格里输入提示。万一你以后忘记了密码，提示能唤起你的记忆。这个步骤是选择性的，但说不定对你有帮助。
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    你会被带回登录界面，输入用户名和新密码登录电脑。
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方法 4
方法 4 的 7:

用系统修复光盘重置Windows 7或Vista的密码

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    [4] 如果你之前没有创建过系统修复光盘，可以要求使用Windows 7的朋友帮你创建一个。
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    根据电脑上的提示，按任意键继续下一步。
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    除非你有多个操作系统和硬盘驱动器，否则屏幕上通常只会显示一个选项。选择标记为“Windows”的操作系统，记下驱动器的字母，可能是“C:”或“D:”。勾选“使用还原工具”旁边的单选按钮，点击“下一步”。
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    这会打开一个黑色的窗口，并有一行提示要求你输入以下所有命令来重命名某些文件。
    • 输入 C: 或 D: （之前记下的驱动器字母），按下 Enter 。
    • 输入 windows\system32 ，按下 Enter 。
    • 输入 ren utilman.exe utilhold.exe ，按下 Enter 。
    • 输入 copy cmd.exe utilman.exe ，按下 Enter 。
    • 输入 exit ，按下 Enter 。
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    当屏幕上出现登录界面，点击左下角的“轻松使用”按钮。这个按钮平时会打开轻松使用中心，但是这次它会打开命令提示符。别担心，等下就会把它改回来的。
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    输入 net user yourusername yournewpassword ，将“yourusername”改为你的用户名，“yournewpassword”改为新密码。输入 exit 关闭命令提示符。
  7. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/6\/65\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-25.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-25.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/65\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-25.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-25.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    用你刚设置的新密码登录电脑。
  8. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/dd\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-26.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-26.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/dd\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-26.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-26.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    在文本框里输入 command ，等待“Command Prompt”出现在搜索结果中。看到“Command Prompt”后右击它，选择“以管理员身份运行”。
  9. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/0\/0d\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-27.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-27.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0d\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-27.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-27.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    • 输入 C: 或 D: （之前输入的驱动器字母），按下 Enter 。
    • 输入 windows\system32 ，按下 Enter 。
    • 输入 copy utilhold.exe utilman.exe ，按下 Enter 。
    • 输入 exit ，按下 Enter 。
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方法 5
方法 5 的 7:

用另一个管理员帐户更改Mac密码

PDF download 下载PDF文件
  1. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/d\/de\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-28.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-28.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/de\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-28.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-28.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    如果Mac电脑上有一个和个人帐户分开的管理员帐户，你可以从那里打开描述文件设置。
  2. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/f\/f4\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-29.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-29.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f4\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-29.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-29.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    如果屏幕上出现锁头图标，点击它，再次输入管理员的登录信息。然后点击“用户与群组”图标。
  3. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/4\/46\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-30.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-30.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/46\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-30.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-30.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    点击“重置密码”按钮，根据提示输入新密码。重置密码后，当你或其它用户要登录电脑时，就必须自己更新或更换密码。
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方法 6
方法 6 的 7:

用Apple ID重置Mac密码

PDF download 下载PDF文件
  1. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/f\/f0\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-31.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-31.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f0\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-31.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-31.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    [5] 当3次登录都不成功，屏幕上会出现一条消息，通知你可以用Apple ID重置密码。如果没有看到这条消息，表示你的帐户类型不能使用这个方法。
  2. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/8\/86\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-32.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-32.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/86\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-32.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-32.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    它就在通知你用Apple ID重置密码的那条消息旁边。
  3. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/8\/8a\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-33.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-33.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8a\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-33.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-33.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    选择你记得住的一串字符，然后根据提示重启电脑。
  4. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/5\/52\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-34.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-34.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/52\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-34.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-34.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    再次打开电脑后，用新密码登录。你需要创建一个新的登录钥匙串，这样电脑上的所有功能才能顺利运作。
    • 当你看到“创建新的钥匙串”消息出现时，点击它，并照着屏幕上的指示操作。
    • 如果这条消息没有出现，打开“应用程序”文件夹，之后打开“实用工具”文件夹。打开“钥匙串访问”，从菜单中选择“偏好设置”。点击“还原我的默认钥匙串”，然后照着屏幕上的指示操作。
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方法 7
方法 7 的 7:

用密码重置助手重置Mac密码

PDF download 下载PDF文件
  1. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/1\/19\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-35.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-35.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/19\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-35.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-35.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    [6] 这个方法要用FileVault才有效。在登录界面等待类似于“使用电源按钮关机，再重启进入恢复模式”的消息出现。按住电源按钮，等待几秒，然后松开。
  2. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/9\/92\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-36.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-36.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/92\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-36.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-36.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    如果电脑用以太网电缆连接到网络（“有线”网络），你应该已经连上网了。如果要连接无线网络，把滑鼠鼠标移到屏幕顶端，Wi-Fi图标出现后，点击它连接网络。
  3. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/5\/5e\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-37.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-37.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5e\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-37.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-37.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    电脑重启进入恢复模式后，屏幕上会有“重设密码”这一行字，下面有3个选项。选择“我忘记了密码”，点击“下一步”。
  4. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/8\/8d\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-38.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-38.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8d\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-38.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-38.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    使用iCloud或Apple帐户的密码，而不是登录电脑的用户名和密码。登录后，恢复系统会从iCloud服务器找回恢复密钥。
  5. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/6\/6e\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-39.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-39.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/6e\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-39.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-39.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    下载了恢复密钥后，给本地电脑帐户输入新的密码。一旦更改了密码，点击“重启”再次启动电脑。重新打开电脑后，用新的密码登录。
  6. {"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/f\/f2\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-40.jpg\/v4-460px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-40.jpg","bigUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f2\/Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-40.jpg\/v4-728px-Access-Your-Computer-if-You-Have-Forgotten-the-Password-Step-40.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"}
    如果你看到类似于“系统无法解锁你的登录钥匙串”的消息，点击“创建新的钥匙串”。注意，每个版本的OSX使用的措辞可能不一样。根据提示操作，直到这条消息消失。如果没有看到这条消息，你可以自己手动创建一个登录钥匙串。前往“应用程序”文件夹，选择“实用工具”，打开“钥匙串访问”。点击“偏好设置”，选择“还原我的默认钥匙串”。
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小提示

  • 想要重置Windows XP的密码，请查看 在Windows XP系统中找回密码 。
  • 平时有机会的时候，最好设置一个密码提示和创建密码重置光盘。
  • 如果电脑的操作系统是Windows 7，你也习惯使用Linux，可以参阅在没有密码重置盘或Windows光盘的情况下重设Windows 7 密码。
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参考

  1. ↑ http://windows.microsoft.com/en-us/windows-live/account-reset-password-forgot-faq
  2. ↑ http://cmdrkeene.com/reset-forgotten-windows-password
  3. ↑ http://support.hp.com/us-en/document/c04648973
  4. ↑ http://www.pcworld.com/article/2988539/windows/if-you-forget-your-windows-admin-password-try-this.html
  5. ↑ https://support.apple.com/en-us/HT202860
  6. ↑ https://support.apple.com/en-us/HT202860

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