How to Fix PIN Not Available Error (August 2026) Windows Guide

You’re staring at your computer screen, locked out of everything that matters. The login window shows an error that makes your heart sink: “Something happened and your PIN isn’t available.” Your files, your work applications, your photos – all suddenly inaccessible. This Windows authentication failure ranks among the most frustrating experiences for Windows 10 and Windows 11 users, and with Microsoft ending support for Windows 10 in October 2025, more users than ever are navigating this tricky transition period while still relying on Windows Hello PIN for their daily logins.

The good news? This error has defeated thousands of users before you, and every single one of them found a way through. In this comprehensive guide, I’ll walk you through exactly what causes this PIN authentication failure, seven proven methods to fix it, and specific troubleshooting steps for Windows 11 users who face unique challenges with TPM-based security. By the end of this article, you’ll not only have your computer back but also understand how to prevent this issue from happening again.

Key Takeaways

• The “Something happened PIN not available” error typically stems from corrupted system files, Windows updates, NGC folder corruption, or TPM configuration problems
• Most PIN authentication failures can be resolved without losing any files – your data remains safe throughout every fix method described here
• Windows 10 users should be aware that Microsoft ended support on October 14, 2025, which may affect how PIN authentication behaves on updated systems
• Windows 11 users face unique challenges because the operating system has stricter TPM requirements than Windows 10
• Prevention strategies like creating restore points and maintaining updated drivers can significantly reduce the likelihood of encountering this error again

What Causes the “Something Happened PIN Not Available” Error?

Before diving into solutions, understanding what triggered this authentication failure helps you choose the right fix faster. Windows Hello PIN relies on multiple system components working together seamlessly – when any one of these breaks down, you get locked out.

The most common culprits include:

• Corrupted NGC folder data: Windows stores your PIN credentials in the NGC folder at C:WindowsServiceProfilesLocalServiceAppDataLocalMicrosoftNGC. When this folder becomes corrupted – often from unexpected shutdowns or disk errors – Windows cannot verify your PIN and displays the error instead
• Failed Windows updates: Recent Windows updates occasionally change how credential authentication works. Whether the update installed incorrectly or introduced a compatibility issue, your existing PIN configuration may no longer be recognized by the system
• TPM configuration issues: Windows Hello PIN uses the Trusted Platform Module for secure credential storage. If your TPM is disabled, has firmware issues, or has been reconfigured by a BIOS update, PIN authentication fails until you resolve the TPM problem
• User profile corruption: Your Windows user profile contains critical authentication data. When profile files become damaged – which can happen during system crashes or improper shutdowns – the entire credential chain breaks down
• PasswordLess sign-in conflicts: Some Windows 10 and Windows 11 installations have a setting that requires a Microsoft account password even when PIN is configured. When this setting conflicts with your PIN setup, authentication fails
• BIOS update complications: Particularly common on ASUS motherboards and pre-built systems from Dell and HP, a BIOS update can reset TPM settings or change how the security chip initializes, causing PIN to stop working immediately after the update

Windows 10 reached end of support on October 14, 2025. While existing installations continue working, Microsoft no longer provides security updates for the operating system. This changes the troubleshooting landscape because some update-related fixes may not apply, and users still on Windows 10 should pay extra attention to backup strategies and prevention tips covered later in this article.

How to Fix “Something Happened PIN Not Available” in Windows 10

Work through these methods in order from easiest to most involved. Most users find resolution by Method 2 or 3, but the hard shutdown approach remains surprisingly effective for many cases and costs nothing in time investment to attempt.

Method 1: Quick Fix Using Hard Shutdown

The hard shutdown technique forces Windows into Recovery Environment, where system repair tools can automatically fix corrupted files that are blocking PIN authentication. This method works because Windows Recovery Environment has its own set of working system files that can repair the main installation.

Step-by-step guide:

1. Ensure your computer is completely powered off – not in sleep or hibernate mode
2. Press the power button to start your computer normally
3. As soon as you see the Windows logo or spinning loading dots, press and hold the power button for 5 to 10 seconds until the machine shuts down forcefully
4. Wait approximately 10 seconds before proceeding
5. Repeat this process two more times – startup, force shutdown during early boot
6. On the third startup, do NOT force shutdown – instead, allow Windows to load normally

When Recovery Environment appears:

1. Select “Troubleshoot” from the available options
2. Choose “Advanced options”
3. Click on “Startup Repair” and allow the tool to scan your system
4. If Startup Repair completes without fixing the issue, return to Advanced options
5. Select “System Restore” if you have restore points available from before the problem started
6. As a final recovery option, choose “Reset this PC” and select “Keep my files” to preserve your data while reinstalling Windows

This approach resolves PIN not available errors caused by temporary system file corruption that clears when Windows performs its startup repair routines. The method requires no technical knowledge and uses built-in Windows tools only.

Method 2: Delete the NGC Folder to Reset PIN

The NGC folder contains all your Windows Hello credential data. When this folder becomes corrupted, deleting it forces Windows to create fresh credential files the next time you set up a PIN. This is one of the most effective solutions for persistent PIN errors.

Accessing the NGC folder from within Windows:

1. Open File Explorer and navigate to C:WindowsServiceProfilesLocalServiceAppDataLocalMicrosoftNGC
2. If you cannot see the AppData folder, enable hidden items in File Explorer by clicking “View” and checking “Hidden items”
3. Select all files and folders inside the NGC directory
4. Press Delete to remove all credential data (Windows will recreate this when you set up a new PIN)
5. Restart your computer
6. On the login screen, click “Set up my PIN” and create a new PIN

If you cannot access the folder due to permission errors:

1. Open Command Prompt as Administrator (right-click the Start button and select “Terminal (Admin)” or “Command Prompt (Admin)”)
2. Type the following command and press Enter: icacls “C:WindowsServiceProfilesLocalServiceAppDataLocalMicrosoftNGC” /T /Q /C /RESET
3. Wait for the command to complete with the message “Successfully processed X files”
4. Navigate to the NGC folder in File Explorer and delete its contents
5. Restart and set up your PIN again

This method works for the majority of “Something happened and your PIN isn’t available” errors because it removes the corrupted credential data entirely and gives Windows a clean slate to work with.

Method 3: Switch to Local Account and Back

Sometimes the issue lies with your Microsoft account connection rather than local credential storage. Switching to a local account breaks the Microsoft account authentication chain, and switching back refreshes it entirely. This method is particularly useful when the error appeared after changing your Microsoft account password.

Step-by-step guide:

1. Press Windows key + I to open Settings
2. Navigate to Accounts > Your info
3. Click “Sign in with a local account instead”
4. Enter your current Microsoft account password when prompted
5. Create a username, password, and password hint for your local account
6. Sign out and sign back in using your new local account credentials
7. Once logged in, go back to Settings > Accounts > Your info
8. Select “Sign in with a Microsoft account instead”
9. Enter your Microsoft account email and password
10. After the account link completes, go to Settings > Accounts > Sign-in options
11. Click “Windows Hello PIN” and select “Remove”
12. Click “Set up” to create a new PIN from scratch

This refreshes the entire credential linking process between your Microsoft account and Windows, often resolving authentication conflicts that cause the PIN not available error.

Method 4: Use Command Prompt to Fix PIN Issues

For more technically confident users, Command Prompt provides direct access to system repair tools that can fix underlying Windows corruption. This method uses SFC (System File Checker) and DISM (Deployment Image Servicing and Management) to scan and repair damaged system files.

Step-by-step guide:

1. Open Command Prompt as Administrator
2. Type sfc /scannow and press Enter
3. Wait for the System File Checker to complete – this typically takes 15 to 30 minutes
4. After SFC completes, type dism /online /cleanup-image /restorehealth and press Enter
5. Allow the DISM tool to finish – another 15 to 30 minutes depending on your system
6. Restart your computer when both processes finish
7. Sign in and try setting up your PIN again in Settings > Accounts > Sign-in options

If standard commands do not resolve the issue, try enabling the hidden Administrator account:

1. Open Command Prompt as Administrator
2. Type net user administrator /active:yes and press Enter
3. Restart your computer
4. At the login screen, select the Administrator account (it typically has no password by default)
5. Open Settings > Accounts > Sign-in options
6. Remove your existing PIN and set up a new one
7. Restart and sign in with your regular account using the new PIN

Many users report that running SFC and DISM in sequence fixes PIN authentication errors caused by Windows update failures or system file corruption that other methods miss.

Method 5: System Restore or Reset

When all other methods fail, system restore takes your computer back to a point in time when PIN was working correctly. If no good restore point exists, resetting Windows preserves your files while reinstalling the operating system from scratch.

Performing System Restore:

1. Access Recovery Environment using the hard shutdown method described in Method 1
2. Select Troubleshoot > Advanced options > System Restore
3. Choose a restore point dated before when the PIN error started
4. Confirm your selection and allow the restore process to complete
5. After restoration, Windows should remember your PIN credentials if the restore point predates the corruption

Resetting Windows (Keep My Files):

1. Enter Recovery Environment
2. Select Troubleshoot > Reset this PC
3. Choose “Keep my files” – this option preserves all personal documents, pictures, and videos
4. Follow the prompts to complete the Windows reinstallation
5. After reset completes, set up your PIN again in Settings

Resetting Windows with the “Keep my files” option gives you a completely fresh Windows installation while preserving your personal data. This resolves even deep-seated credential corruption that other methods cannot fix.

Method 6: PasswordLess Sign-in Registry Fix

Windows 10 and Windows 11 include a “PasswordLess sign-in” setting that Microsoft introduced to streamline login. However, this setting can conflict with existing PIN configurations, especially after updates. Disabling this feature forces Windows to use traditional credential verification that works more reliably with PIN.

Step-by-step guide:

1. Press Windows key + R to open the Run dialog
2. Type regedit and press Enter to open Registry Editor
3. Navigate to HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem
4. In the right pane, look for a value named “PasswordLessWorkstation” or “DisablePassword1”
5. If the value exists, double-click it and change the data from 0 to 1
6. If the value does not exist, right-click in the right pane, select New > DWORD (32-bit) Value, name it “PasswordLessWorkstation”, and set the data to 1
7. Close Registry Editor and restart your computer
8. Try signing in with your PIN – the conflict should now be resolved

This registry modification addresses a specific Windows configuration that forces password authentication even when PIN is available. Many users on Windows 11 encounter this issue after feature updates change this hidden setting.

TPM and BIOS Configuration Troubleshooting

The Trusted Platform Module (TPM) is a dedicated microprocessor that provides hardware-level security for Windows Hello credentials. When TPM has configuration problems, PIN authentication fails even when all other system components work correctly. This section addresses TPM issues that competitors rarely cover but which affect many users, particularly after BIOS updates.

Checking TPM Status in Windows:

1. Press Windows key + R, type tpm.msc, and press Enter
2. Look at the TPM Status section – it should show “The TPM is ready for use” or similar
3. If you see “TPM not found” or “TPM is disabled”, you need to enable it in BIOS
4. If the status shows “TPM requires a restart”, restart your computer and check again

Enabling TPM in BIOS (General Steps):

1. Restart your computer and press the BIOS key during startup (typically Del, F2, F10, or Esc depending on manufacturer)
2. Look for Security, Advanced, or TPM settings in the BIOS navigation
3. Find the TPM enable/disable option and ensure it is set to Enabled
4. Save changes and exit BIOS – your computer will restart
5. After Windows loads, verify TPM status in tpm.msc again

Manufacturer-specific TPM configuration:

ASUS motherboards: Enter BIOS using Del or F2 during startup. Navigate to Advanced > TPM Configuration. Set “TPM Device Selection” to “fTPM” or “AMD CPU fTPM” depending on your processor. If you have an Intel system, look for “Intel Platform Trust Technology” and enable it. ASUS boards are particularly known for TPM issues after BIOS updates, so if problems started after an update, clearing CMOS may be necessary.

MSI motherboards: Press Del to enter BIOS, go to Settings > Security > Trusted Computing. Enable “Security Device Support” and ensure “AMD TPM” or “Intel PTT” is selected as the device type. MSI boards typically use “AMD fTPM” or “Intel PTT” terminology.

Gigabyte motherboards: Enter BIOS with Del or F2, navigate to BIOS Features > TPM 2.0 Device Configuration. Set “TPM 2.0” to “Enable”. Gigabyte uses slightly different naming but the TPM functionality remains in the same general area.

Dell systems: Press F2 during startup to enter BIOS. Navigate to Security > TPM 2.0. Ensure TPM is enabled and set to “Enabled with Legacy Boot” if available. Dell systems often have BitLocker enabled by default, so be prepared to enter a BitLocker recovery key if TPM changes affect your system.

HP systems: Press Esc during startup to access the startup menu, then press F10 for BIOS. Go to Security > TPM Embedded Security. Enable TPM and ensure “TPM State” is checked. HP systems may require “Clear TPM” if the module gets locked, but this will require BitLocker recovery if enabled.

Intel vs AMD platforms: Intel systems use Intel Platform Trust Technology (PTT) while AMD systems use fTPM. Both provide equivalent functionality for Windows Hello PIN. If you switch between these technologies or disable one and enable the other, Windows may lose PIN recognition until you reset up the credential.

BIOS Update Related PIN Issues

Many users report that PIN authentication breaks immediately after a BIOS update. This happens because BIOS updates can reset TPM configuration, change how the security chip initializes, or reset other firmware settings that Windows Hello depends on. Understanding this connection helps you recover more quickly when problems arise after a BIOS update.

Common scenarios where BIOS updates cause PIN issues:

• BIOS update resets TPM to disabled state, causing Windows to lose access to credential storage
• BIOS update changes from “fTPM” to “PTT” or vice versa, requiring reconfiguration in Windows
• BIOS update introduces compatibility issues with Windows Hello that require a Windows update to resolve
• Motherboard firmware update clears TPM keys that Windows has registered, invalidating stored credentials

Recovery steps after BIOS update:

1. Check your current TPM status in Windows (tpm.msc) before making any changes
2. If TPM shows as disabled or not found, enter BIOS and re-enable it
3. After enabling TPM, restart Windows and check if PIN works
4. If PIN still does not work, access Recovery Environment and use Command Prompt to run: shutdown /r /o to reboot to advanced startup
5. Select Troubleshoot > Advanced options > Command Prompt and run: sfc /scannow followed by dism /online /cleanup-image /restorehealth
6. After those complete, restart normally and try PIN again

If all else fails, you may need to clear the TPM in BIOS (which removes all stored keys and certificates) and then re-enable it. This requires setting up Windows Hello again from scratch, but it resolves cases where the TPM has gotten into a corrupted state that a simple re-enable cannot fix. Be aware that clearing TPM will require your BitLocker recovery key if BitLocker is enabled on your drives.

What About Windows 11 Users?

Windows 11 introduces significantly stricter security requirements compared to Windows 10, and these changes directly affect how PIN authentication works. The operating system requires TPM 2.0 to be present and enabled as a minimum security baseline, which means Windows 10 PIN issues and Windows 11 PIN issues often have different root causes despite appearing identical on screen.

The Windows 11-specific considerations include:

• TPM 2.0 is mandatory for Windows 11, not optional as on Windows 10. If your TPM is version 1.2 or has compatibility issues, Windows 11 either will not install or will have reduced functionality for Windows Hello
• Secure Boot is required on Windows 11, which means the boot process validates credential storage components that Windows 10 does not check
• Windows 11 updates more aggressively enforce credential provider policies, which can disable PIN authentication if group policies conflict
• The Windows 11 login screen has different behavior when PIN fails – clicking “Set up my PIN” may redirect differently than on Windows 10

Windows 11-specific troubleshooting:

1. Check for Windows updates first – Microsoft frequently releases patches that fix Windows Hello issues
2. Open Settings > Windows Update and install any pending updates
3. After updates install, go to Settings > Windows Security > Device Security
4. Check “Security Processor” details and ensure TPM is showing as ready
5. Update your TPM firmware if a newer version is available from your motherboard or OEM manufacturer
6. Update chipset drivers and security-related drivers through Device Manager

Windows 11 has stricter requirements for Windows Hello functionality. If you recently upgraded from Windows 10 and are experiencing PIN issues, your system may be running in a reduced functionality mode where certain security features work only partially. Completing all pending updates and ensuring your TPM firmware is current often resolves these compatibility issues.

For users encountering the “Something happened and your PIN isn’t available” error on Windows 11, the NGC folder deletion method (Method 2) remains the most effective starting point. However, Windows 11 users should also check their TPM status immediately after deleting NGC folder contents, as the re-enumeration process that occurs when Windows recreates credentials may reveal underlying TPM configuration problems that Windows 10 users never encounter.

Understanding Challenge Phrase Authentication (A1B2C3)

Some Windows users encounter an authentication request that looks like random letters and numbers – a “Challenge Phrase” such as A1B2C3 – appearing instead of or alongside the PIN prompt. This is a security feature built into Windows that appears when Windows Hello cannot verify your credentials through the normal process and requires additional confirmation of your identity.

When the Challenge Phrase appears:

• After too many incorrect PIN attempts, Windows requires the Microsoft account password instead of the PIN
• When the TPM has been reset or reconfigured and Windows needs to verify you through the Microsoft account
• When you sign in on a new device or after reinstalling Windows
• When group policy settings require periodic password verification for security reasons

How to resolve when A1B2C3 challenge appears:

1. Click on the Challenge Phrase or look for a “Sign in with your Microsoft account password” option
2. Enter your full Microsoft account password (not the PIN)
3. After successful password authentication, Windows should return to accepting your PIN
4. If the Challenge Phrase keeps appearing, go to Settings > Accounts > Sign-in options and remove the PIN, then set it up again

The Challenge Phrase itself is not a problem – it is an extra security measure. However, if you find yourself repeatedly answering challenge phrases instead of using your PIN, that indicates underlying credential storage issues that the NGC folder deletion method should address. Some users also report that challenge phrases appear more frequently after Windows updates change authentication policies.

How to Prevent This Issue from Happening Again

After investing time in fixing your PIN authentication, protecting against future occurrences saves you from dealing with the same frustration later. Prevention focuses on maintaining system integrity, creating backup authentication methods, and avoiding the most common trigger behaviors.

System maintenance best practices:

• Create a password reset disk or USB drive immediately after setting up your PIN – this provides an alternative authentication path if PIN fails completely
• Maintain a current Windows backup using the System Backup feature or third-party imaging software
• Create system restore points manually before installing updates, drivers, or new software
• Never force shutdown your computer during Windows updates – let the update process complete naturally even if it takes longer than expected
• Keep your TPM firmware updated through your motherboard manufacturer or OEM utility software

Authentication redundancy:

• Always maintain your Microsoft account password in a secure location – this password serves as the ultimate fallback when PIN fails
• Consider setting up Windows Hello Face or Fingerprint as alternative biometric authentication methods
• On Windows 11, ensure you have access to a security key or Windows Hello for Business if your organization supports it
• Write down the BitLocker recovery key for your system drive and store it in your Microsoft account or a secure location

Driver and update caution:

• Before updating BIOS, create a restore point and understand that TPM settings may reset
• After BIOS updates, immediately verify TPM is still enabled and Windows Hello still works
• Use driver update utilities with caution – verify that chipset and security drivers come from official sources only
• If you use third-party security software, ensure it is compatible with your Windows version and does not interfere with credential providers

For Windows 10 users specifically, the October 2025 end of support milestone means your system no longer receives security updates from Microsoft. While this does not immediately break PIN functionality, it does mean your system becomes increasingly vulnerable to exploits that could corrupt credential storage or compromise the TPM. Consider planning a migration to Windows 11 if your hardware supports it, or ensure you have robust offline backups of any important data.

Frequently Asked Questions

Conclusion

The “Something happened PIN not available” error in Windows 10 and Windows 11 disrupts access to your computer, but it is a solvable problem with multiple documented fix paths. From simple hard shutdown recovery to deeper TPM reconfiguration, each method addresses different root causes, and most users find resolution without needing to lose any files or perform a full system reinstallation.

The methods in this guide progress from simple to advanced, and I recommend attempting them in order. The hard shutdown technique costs nothing and resolves surprisingly many cases. The NGC folder deletion method addresses the most common cause of persistent PIN failures and is effective for the majority of users who still have problems after trying the simpler approaches. For Windows 11 users specifically, paying attention to TPM configuration provides solutions that Windows 10-only guides often miss.

Windows 10 users should note that with support ended as of October 14, 2025, the operating system no longer receives security updates. This does not make PIN stop working immediately, but it does mean planning for eventual migration to Windows 11 or maintaining robust offline backups becomes more important than ever.

For additional Windows login options, check out our guide on alternative Windows login methods. If you encounter related account access issues, learn how to fix account locked out errors in our related troubleshooting article.

Have you resolved your PIN issue using one of these methods? Let us know in the comments which approach worked for your situation, and share any additional troubleshooting tips that helped you get back to your desktop.