Введите A1B2C3 чтобы повторить попытку при входе в Windows 11 и Windows 10 — варианты решения
Некоторые пользователи при входе в Windows 11 или 10 сталкиваются с сообщение «Чтобы повторить попытку, введите A1B2C3 ниже» с полем «Фраза вызова». Обычно, такое сообщение появляется если ввести ПИН-код для входа в систему неправильно несколько раз.
В этой инструкции подробно о том, что делать, если вы столкнулись с такой ситуацией и в случаях, когда сообщение «введите A1B2C3» появляется постоянно и без многократного неправильного ввода ПИН-кода.
При однократном появлении сообщения — просто введите A1B2C3
Если ранее вы не сталкивались с такой проблемой, а включив компьютер или ноутбук обнаружили, что вас просят ввести A1B2C3, чтобы повторить попытку, стоит попробовать сделать это, не забыв про заглавные буквы и переключение на английскую раскладку клавиатуры: обычно это клавиши Alt + Shift и Windows + Пробел.
После ввода указанного сочетания букв и цифр вас попросят ввести обычный ПИН-код для этой учетной записи, а после верного ввода вы войдете в Windows 11/10.
Это может помочь даже в случае, если вы не вводили неверный ПИН-код: возможно, в ваше отсутствие это пробовал сделать кто-то другой, затем выключил компьютер или перевел его в спящий режим. В таком сценарии при повторном включении вы всё равно получите сообщение о необходимости ввода A1B2C3.
Если запрос о вводе появляется при каждом включении компьютера
В ситуации, когда, введя A1B2C3 вы можете войти в систему, но перезагрузка или завершение работы Windows вновь приводит к той же самой проблеме, при этом никто кроме вас компьютер не использует, можно попробовать следующие варианты решения проблемы.
Удаление ПИН-кода, перезагрузка и повторная его установка
Первый вариант — попробовать удалить ПИН-код для входа (требуется, чтобы вы знали пароль своей учётной записи Майкрософт для входа без ПИН-кода), а после перезагрузки вновь установить его, если требуется.
Шаги для удаления ПИН-кода в Windows 11 (в Windows 10 действия очень похожи, разобраться будет не сложно):
- Откройте «Параметры» и перейдите в раздел «Учетные записи».
- Откройте раздел «Варианты входа».
- Раскройте пункт «PIN-код» (Windows Hello) и нажмите кнопку «Удалить». Если она не активна, пролистайте то же окно вниз и отключите опцию «Для повышения безопасности разрешите вход Windows Hello для учетных записей Майкрософт на этом устройстве» и уже после этого удалите ПИН-код. Если и этот пункт не активен, решение вы найдете в статье Как удалить ПИН-код Windows 11.
- Перезагрузите компьютер.
- После входа с паролем учетной записи Майкрософт вновь создайте ПИН-код в том же разделе параметров.
Полное удаление настроек входа с ПИН-кодом
Второй метод — удаление папки с параметрами ПИН-кодов (для всех пользователей компьютера, для входа в систему потребуется знать пароль учетной записи Майкрософт) и установка нового ПИН-кода после этого. Необходимые действия:
- Запустите командную строку от имени администратора (как это сделать).
- По порядку введите следующие три команды, нажимая Enter после каждой: последнюю команду потребуется подтвердить вводом «Y».
- Закройте командную строку и перезагрузите компьютер.
- Войдите в учетную запись с паролем учетной записи Майкрософт (потребуется подключение к Интернету).
- Вам будет предложено создать новый ПИН-код. Если этого не произошло, вы можете создать его самостоятельно в Параметрах Windows 11 и Windows 10.
Надеюсь, один из методов подойдёт в вашем случае. Если же решить проблему не удалось, опишите её в подробностях, используя форму комментариев ниже, я постараюсь предложить дополнительные варианты.
Что делать, если Windows 10 или 11 требует ввода фразы вызова A1B2C3
Если при входе в учетную запись Windows 10 или 11 трижды или четырежды ввести неправильный пин-код, система может отреагировать, хотя это и необязательно, требованием ввести фразу вызова A1B2C3 . Данная функция является частью дополнительного механизма безопасности и своего рода предупреждением. Если пользователь введет предложенную фразу правильно, но затем вновь ошибется с вводом пин-кода, устройство будет заблокировано и потребует перезагрузки.
Столкнувшись с требованием ввода A1B2C3 , введите его в поле «Фраза вызова», затем введите правильный пин-код, и вход в систему будет осуществлен.
Однако после включения или перезагрузки компьютера вас может ожидать неприятность в виде повторного требования ввода фразы вызова.
В этом случае попробуйте выполнить следующее.
Открыв раздел «Учетные записи» в приложении «Параметры», выберите «Варианты входа», разверните блок «PIN-код (Windows Hello)» и нажмите кнопку «Удалить».
Если кнопка вдруг окажется неактивной или ее не обнаружится, в этом же окне деактивируйте настройку «Для повышения безопасности разрешите вход Windows Hello для учетных записей Майкрософт на этом устройстве» .
Если эта настройка тоже неактивна, запустите редактор реестра командой regedit .
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PasswordLess\Device
И измените значение параметра DevicePasswordLessBuildVersion на 0.
После этого кнопка удаления пин-кода должна стать доступной.
Также вы можете воспользоваться радикальным решением – принудительным удалением файлов PIN -кода, расположенных в системной папке C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc , правда, сначала вам придется получить на него права с наследованием.
Если нет желания возиться с правами, откройте от имени администратора классическую командную строку и выполните одну за другой эти три команды, подтвердив выполнение последней вводом Y :
- takeown /f C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /A /R /D Y
- icacls C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /grant Администраторы:f /t
- rd C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /s
Перезагрузите компьютер и войдите в Windows со своим локальным паролем или паролем учетной записи Microsoft. Система либо сама предложит вам создавать новый пин-код, либо вы сами сможете это сделать в настройках вариантов входа.
How to Fix Windows A1B2C3 Challenge Phrase
Microsoft has recently implemented a challenge phrase security feature with the objective to reduce brute-force login attempts on Windows 10 and 11 computers. What it does is display the A1B2C3 error and ask the user to enter the challenge phrase which is literally A1B2C3. What’s weird is that users are getting confronted with the A1B2C3 challenge phrase even after they have entered the correct pin. Here’s how to fix A1B2C3 challenge phrase on Windows 10/11 computers.
Table of Contents
Sign-In Using Password
The first thing you need to do is sign in to your Windows computer. Otherwise, how will you troubleshoot the A1B2C3 challenge phrase problem? If you have set up PIN as your sign-in method on Windows, then you also have a password option. Windows don’t allow setting up PIN without a password.
Under the box where you would normally enter your PIN, look for the Sign-in Options button. Click on that to reveal more ways to sign in. You should find either password or fingerprint or face unlock here. Use one that you have access to and sign in to your Windows account.
Change PIN and Password
Several users found that changing the pin and password of their Windows 10/11 account resolved the A1B2C3 challenge phrase issue. To change password or pin:
1. Press Windows + I to open Settings. Select Accounts from the sidebar and click on Sign-in options.
2. Select PIN (Windows Hello) and click on Change PIN button.
3. In the pop-up that follows, enter your old pin and then your new pin twice. Click on OK to save.
Follow on-screen from here on and you are done.
Remove NGC Folder Content
Windows saves your login information in the NGC folder. Needless to say, if the folder is corrupt, has files with bugs, or lacks correct permissions, you will face sign-in errors like challenge phrase A1B2C3 error.
1. Sign in to your Windows administrator account.
2. Navigate to the folder structure below.
Note: The folder AppData is hidden by default for safety reasons. You need to unhide it. To do that, in File Explorer, click on View > Show > Hidden items.
3. Right-click on the Ngc folder and select Properties.
4. Under the Security tab, click on Advanced button.
5. Click on Change link next to the Owner section.
6. Type administrators (no space before or after) in the pop-up that follows in the given field and click on Check Names button.
7. It will detect the username automatically. Click on OK to save changes.
8. You should now be able to enter the Ngc folder. Double-click to open the folder and delete all files saved within.
What If I Forgot the Password
That’s a separate issue and beyond the scope of this article. However, on the sign-in screen, you should I forgot my PIN or Reset password option. If yes, use that and follow on-screen instructions to change the password or PIN on your Windows computer and regain access.
Bonus Tip: Use Fingerprint or FaceUnlock
If your Windows computer has a webcam and/or fingerprint reader, we recommend you set it up. That would make it so much easier to sign in to your Windows computer. No need to remember and enter a pin or password now.
Challenging Times
We don’t recommend you remove your password/PIN completely just because you are seeing the A1B2C3 challenge phrase screen as it leaves your computer vulnerable. Anyone with physical access to your Windows 11 and 11 PCs can steal data or change settings, for example. You don’t want that. Windows Hello was designed to protect your privacy and offer security. Instead, set up multiple sign-in methods like password, PIN, fingerprint or face unlock so if one doesn’t work, you have a backup.
Now that you have entered your computer, it’s time to optimize it to get the max out of it.
Gaurav Bidasaria
Gaurav is an editor here at TechWiser but also contributes as a writer. He has more than 10 years of experience as a writer and has written how-to guides, comparisons, listicles, and in-depth explainers on Windows, Android, web, and cloud apps, and the Apple ecosystem. He loves tinkering with new gadgets and learning about new happenings in the tech world. He has previously worked on Guiding Tech, Make Tech Easier, and other prominent tech blogs and has over 1000+ articles that have been read over 50 million times.
Fix/Workaround for Windows Asking To Enter A1B2C3 Challenge Phrase
When trying to log into your user account on a Windows PC, you may see an error message stating “To try again, enter A1B2C3 below.” This is a “Challenge phrase” that you see when the computer detects that there have been multiple incorrect attempts to log in.
This error message can be seen on both Windows 10 and 11, but only in case someone is repeatedly entering an incorrect PIN. This error message does not show up when entering an incorrect password.
That said, there are reports that users often encounter this error message even though the computer has just started up, or they haven’t even touched the keyboard yet and the “A1B2C3” error message is there. In certain cases, someone has been trying to access their PC behind their backs and now the error message won’t go away.
If you are reading this post, then it is likely that you or someone around is experiencing the same problem. Here, you’ll find quick workarounds and fixes to mitigate the issue and successfully log into your PC.
Table of contents
- Purpose of the A1B2C3 Log-In Challenge Phrase
- Bypass/Fix Continuous A1B2C3 Challenge Phrase
- Enter the A1B2C3 Challnge Phrase
- Use other Sign-In Options
- Create New Login PIN
- Reset the Access Control List
- Change Owner of NGC Directory
- Reset ACL
Purpose of the A1B2C3 Log-In Challenge Phrase
Please enable JavaScript
Before we begin, we would like to inform you that this error prompt is not an “error,” per see, but more like an attack prevention mechanism set in place by Microsoft.
In the modern world, Brute force attacks are becoming more and more common. A Brute force attack is when repeated attempts are made to penetrate the system/network.
In case someone is trying to log into your user account remotely, they will be asked to enter this challenge phrase to restrict their access to the Lock Screen, where they can continue guessing your password.
A1B2C3 challenge phrase prompt
That said, the error message should only show up once. Once you have entered the challenge phrase, you should be brought back to the Lock Screen where you can enter your PIN/biometric information/password, and continue to log into your account.
However, according to online forums, that is not always the case. Users are often stuck inside the same loop or are asked to enter the “A1B2C3” challenge phrase every time they want to log in.
Let us now continue to see how we can bypass or mitigate the problem once and for all.
Bypass/Fix Continuous A1B2C3 Challenge Phrase
There are methods to both bypass the A1B2C3 challenge phrase in case it was a one-time prompt, or fix the issue if you are encountering the prompt continuously and repeatedly.
We suggest that you perform the given solutions below in the given chronological order that go from simply bypassing the challenge phrase to resolving the repeated prompt. Additionally, perform all the methods using an administrator account.
Note that the methods to fix the continuous asking of the challenge phrase need to be performed while you are logged in. Therefore, you might need to perform either one of the first two solutions nonetheless.
Enter the A1B2C3 Challnge Phrase
The first and least-extensive workaround is to simply do what the computer is asking. By entering the challenge phrase, you will be taken back to the Windows lock screen, where you must carefully enter the correct credentials to log in.
Enter “A1B2C3” in the challenge phrase text field and hit Enter.
Enter the PIN/Biometric information to log into your account.
Enter login credentials
Carefully enter the correct credentials to log into your computer account.
Use other Sign-In Options
Alternatively to the method above, you can also use other sign-in options to log into your account. If you have configured other methods to sign in, such as a password, then you can use that to sign in instead.
Click “Sign-in options” under the challenge phrase text field.
Now select the alternative sign-in option available.
Now enter the alternative credentials and press Enter.
You should now be logged into your account. Hopefully, you won’t be asked to re-enter the A1B2C3 challenge phrase unless the wrong credentials are entered again. However, if the issue persists, then we suggest that you continue to perform the mitigation methods shared below.
Create New Login PIN
In case there is any issue with the information stored on the computer regarding your PIN, you ought to try deleting the old PIN and creating a new one. This way, the locally-stored data will be reset and new files will be created.
Here are the steps to create a new PIN in Windows:
Go to the following:
Click “Windows Hello PIN.”
Click Remove.
Click “Remove” again to confirm.
Enter your account password to authenticate and click Ok.
Enter password to authenticate
The existing PIN will now be removed.
Click “Add” under Windows Hello PIN.
Enter your account password again to authenticate.
Set a new PIN and click Ok.
Once a new PIN has been configured, lock/sign out of your account and check whether you still encounter the “A1B2C3” challenge phrase.
If you do, then we might need to dig a little deeper to resolve the issue.
Reset the Access Control List
Windows OS stores an Access Control List (ACL) to authenticate which passwords and PINs should allow an individual to log in. This is stored inside the “Ngc” folder located at the following path:
An issue with the ACL can prompt the challenge phrase to pop up over and over again. Therefore, it must be reset. However, before you can reset it, you must gain full control over the NGC folder so you do not encounter the “Access is denied” error.
Change Owner of NGC Directory
Using File Explorer, navigate to the following path:
Note: You may not be able to enter the path directly into the navigation bar in File Explorer due to a lack of permissions. Additionally, since the “AppData” directory in the given path is hidden, you can access it by manually entering the directory into the navigation bar (for the said folder only), or accessing it by viewing hidden items.
Once there, right-click the “Ngc” folder and click Properties.
Switch to the Security tab and click Advanced.
Click “Change” in front of Owner.
Type in “Administrators” in the text field, click “Check Names,” and the Administrators group will automatically be selected. Then click Ok.
Select “Replace owner on subcontainers and objects” and click Apply and Ok.
When asked for confirmation, click Yes.
When asked to reopen object properties, click Ok.
Click Ok on the advanced security setting and properties window.
Now that you have the required permissions (since you are logged in from an administrative account), continue to perform the steps in the next section to reset the ACL.
Reset ACL
Follow these steps to reset the ACL and check whether it resolves the issue:
Run the following cmdlet:
Now, you must set a new PIN for your account by going to the following:
Now check whether the “A1B2C3” prompt has gone away. If it hasn’t, then there is still one more trick up our sleeve.
Remove Ngc Folder Content and Create Fresh Files
This is the most extensive mitigation method of the A1B2C3 challenge phrase and should only be used in case none of the methods above have worked.
Since the “Ngc” folder stores your login information, you must delete it and then recreate a new PIN. Here is how:
Note: You can either delete the data inside the Ngc folder or simply rename it. Moreover, we also recommend that you create a system restore point before proceeding so that you can revert your settings in case things do not go as planned.
(Conditional) If you haven’t already, take ownership of the Ngc folder.
Use File Explorer to navigate to the Ngc folder at the following path:
Select everything inside the folder (CTRL + A) and hit Delete.
Delete contents of Ngc folder
Alternatively, you can simply rename the Ng folder to “Ngc.old”.
Now, you must set a new PIN for your account by going to the following:
Now check whether you continuously see the “A1B2C3” challenge phrase when attempting to log in.
As reported, this last solution works for most users and resolves the issue. However, we only need to be extreme with the Windows OS when absolutely necessary.
Closing Thoughts
We repeat that the “A1B2C3” challenge phrase is not an error, but a prevention mechanism of Windows to secure your account and protect your data from Brute force attacks.
However, when Windows repeatedly asks you to enter the challenge phrase, it means that something might be wrong. The solutions given in this post should surely work and fix the issue.
Let us know which solution worked for you in the comments below, so our readers can get a better understanding of how aggressive their approach should be to fix it from the very beginning.