Tring to change password when logged in and asking me for my password which i dont know!

Hello,Bernd Loos

Welcome to the Microsoft Community

Thank you for your feedback. I read the information you provided. You mentioned that the system asked you to enter a password that you don't know.

I understand the confusion caused by this problem. Can you tell me what account you are currently using to log in to the system?

If you are using a Microsoft account to log in to the system, you can try to click the login option below the password box. You can find the Forgot Password option. After clicking it, you can reset the password. After completing it, you can successfully log in.

If you are currently trying to log in with a local account, you can try the following method to reset the PIN code.

Method 1. The NGC folder stores login information related to Windows Hello. Deleting this folder can reset the login options.

When starting your computer, press and hold the power button for 5-10 seconds to perform a hard shutdown, repeat twice.

On the third startup, Windows will boot into the recovery environment, select Advanced options.

In the recovery environment, select Troubleshoot -> Advanced options -> Command Prompt.

In the Command Prompt window, enter the following command to navigate to the NGC folder:

cd C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\NGC

Press Enter to execute the command.

Once in the NGC folder, enter the following command to delete all files:

del /F /Q *

Press Enter to execute the command.

Method 2. Clearing the TPM can resolve issues related to the hardware security module.

Restart your computer and enter the BIOS/UEFI setup by pressing a specific key during the boot process (usually F2, F10, Del, or Esc, depending on your computer brand).

Look for options such as "Security", "Advanced", or "Trusted Computing" in the BIOS/UEFI.

Find the TPM-related settings, which may be called "TPM", "Security Chip", or "Intel PTT".

Look for the "Clear", "Reset", or "Remove" option in the TPM settings.

Select this option and confirm.

Save changes and exit BIOS/UEFI.

Disclaimer: You will modify BIOS settings, please back up important data in advance.

Method 3.You can try enabling the built-in administrator account on your computer and log in with it as a temporary fix. This account doesn't need an email or password and doesn't require an Internet connection:

On the lock screen, hold down Shift and click "Restart" in the bottom right corner.

Your system will reboot into a special boot options menu. Choose "Troubleshoot" > "Advanced options" > "Command Prompt".

In the Command Prompt window, type regedit and press Enter.

In the Registry Editor, select "HKEY_LOCAL_MACHINE", then go to the "File" menu and choose "Load Hive".

Find the drive where your OS is installed (usually C:), and navigate to "Windows\System32\config".

Select the file named "SAM" and click "Open".

In the dialog box that appears, name this file (e.g., REM_SAM).

Go to "HKEY_LOCAL_MACHINE\REM_SAM\SAM\Domains\Accounts\Users\000001F4" and double-click the entry named "F". In the table that opens, find the number 11 (first column, eighth row), right-click it, press Backspace to delete 11, and then type 10 in its place.

In the Command Prompt window, type exit to close the Registry Editor, and restart your computer.

After rebooting, you should be able to log in using the built-in administrator account. Once logged in, create a new Windows user account, set a new password, and transfer all your files from the old account to the new one. Detailed instructions can be found in the "Fix a corrupted user profile" section on the Microsoft support page:

Troubleshoot problems signing in to Windows - Microsoft Support

I know that you're looking for an easy fix, but unfortunately, it's quite the opposite. Windows 10 and Windows 11 require personal users to log in with a Microsoft account and don't prompt users to create multiple Windows accounts as backups. This makes being locked out of Windows one of the toughest issues to deal with. The method mentioned above is actually the most practical solution available.

If you still can't log in, you might need to Reinstall Windows with the installation media - Microsoft Support. You can keep your files during the reinstallation process. When prompted to sign in to a Microsoft account, you can bypass it by pressing Ctrl + Shift + F3 to enter audit mode.

Once on the desktop, go to the Start menu, select "Settings", go to "Accounts" > "Other users", and add a new user.

Choose "I don't have this person's sign-in information", then select "Add a user without a Microsoft account".

Next, press Win + R, type sysprep, and press Enter.

In the window that appears, select "Enter System Out-of-Box Experience (OOBE)", check the "Generalize" option, choose "Shutdown" from the dropdown menu, and click "OK". This will allow you to continue with the rest of the setup.

Best regards

Brian - Microsoft Community Support Specialist