Windows password traversal via Kon-boot

Windows password traversal via Kon-boot

Kon-Boot is an application that changes the content of the Windows kernel during system boot, bypassing Windows authorization and allowing you to log into a password-protected account without entering a password. The password is not changed and is not reset. The next time Windows boots up normally, the content of the kernel is restored and the system asks again for the password to access the account. Kon-Boot can be loaded via CD or USB device.

Kon-Boot supports the following Windows versions: XP (starting with SP2), Vista, 7, 8 (8.1), 10 as well as Windows Server 2003 and Windows Server 2008.

Kon-Boot will need: to create a bootable USB stick with Kon-Boot.

1. USB flash drive. Please note that during the process of creating a bootable USB flash drive with Kon-Boot all information on the flash drive will be deleted;

2. Program Kon-Boot.

Download Kon-Boot v.2.5.0.


I. Creation of bootable USB flash drive with Kon-Boot

1. Insert the USB stick into the USB connector. Unpack (receive with WinRAR or just open with Explorer) the Kon-Boot program you downloaded earlier.

2. Open the folder Kon-Boot for Windows 2.5.0 and run the file KonBootInstaller as administrator (cap right click on the file KonBootInstaller, then select Run as administrator) (Fig.2).

3. In the window that appears press OK.

4. Under Available USB drivers, select USB stick from the drop-down list, then press Install to USB stick (with EFI support) (Figure 4).

Appropriate! At the time of installation, there should be only one USB stick (the one you are installing the Kon-Boot on), otherwise the installation of the Kon-Boot may fail and there will be an error during the boot process from the USB stick.

5. In the window that opens click Yes.

6. The installation process will begin

All right! If you get an error like: Fatal: unable to copy C:\Kon-Boot for Windows 2.5.0\kon-bootUSB\USBFILES\menu.lst to G:\menu. lst, error = 0x00000002 (file exists=0), you need to rename the file konboot.lst (Kon-Boot for Windows 2.5.0\kon-bootUSB\USBFILES\konboot.lst) to menu.lst, then rewrite Kon-Boot on a flash drive using KonBootInstaller.exe.

7. After installation is complete, press OK.

II. Starting and using a bootable USB flash drive with Kon-Boot


1. Insert the bootable USB flash drive with Kon-Boot into the USB connector. Immediately after starting the computer you need to call Boot menu. Since Boot menu call keys are different on different motherboards and notebooks, below is a table (Fig.8) according to which you need to press the appropriate key ( example, if you have a desktop computer and you do not know what motherboard is on it, power off the computer, open the side cover of the system unit and look at the model of the motherboard).

2. Boot menu slightly differs on different models and approximately looks as follows

3. Choose to boot from USB stick and press Enter.

4. Select Kon-Boot (CURRENT VERSION) and press Enter. Next you will see Kon-Boot on the screen and Windows will start booting

IMPORTANT! If “No Systemdisk” appears on the screen. Booting from harddisk. Start booting from USB device…” – reinstall Kon-Boot using KonBootInstaller.exe. If you see “Dummy bios detected trying to fix smap entries” – you need to disable (put into Disabled mode) option Secure boot (or any other related to protection of booting from USB) and enable (put into Enabled mode) options Load Legacy Option Rom / CSM, if any.


5. At the stage of entering the password, leave the field empty, or you can write random characters (Windows will accept them as the correct password) and press Enter (Fig.13).

Nuances of this method

– It does not work if Windows 10 uses a Microsoft online account. Currently only bypasses the local account

– Does not work if Security Boot mode is enabled in the BIOS (different brands have different names for the

– Sometimes it doesn’t work on all USB ports.

– Password bypasses, not erases.

– It might not work the first time.

WARNING! All links in the articles may lead to malicious sites or contain viruses. Follow them at your own risk. Those who purposely visit the article know what they are doing. Do not click on everything thoughtlessly.


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