Windows 10: Need help with upgrading to Windows 11. Consistently receiving 0x40021 error, failure on...

Discus and support Need help with upgrading to Windows 11. Consistently receiving 0x40021 error, failure on... in Windows 10 Installation and Upgrade to solve the problem; Trying to upgrade to Windows 11. Consistently receiving 0x40021 error, failure on SECOND_BOOT phase during SYSPREP_RESPECIALIZE operation. Uninstalled... Discussion in 'Windows 10 Installation and Upgrade' started by MikeM5243, Feb 24, 2024.

  1. MIKEM5243
    MikeM5243 Win User

    Need help with upgrading to Windows 11. Consistently receiving 0x40021 error, failure on...


    Trying to upgrade to Windows 11. Consistently receiving 0x40021 error, failure on SECOND_BOOT phase during SYSPREP_RESPECIALIZE operation. Uninstalled software, ran several error checks, performed a clean boot, disabled network and SD card reader through BIOS, the error persists. Can someone give advice on how to troubleshoot using the logs that are generated in Panther and Rollback directories?

    :)
     
    MikeM5243, Feb 24, 2024
    #1
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Need help with upgrading to Windows 11. Consistently receiving 0x40021 error, failure on...

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