Windows 10: Installation of update 21H1 failed error 0x8007042b

Discus and support Installation of update 21H1 failed error 0x8007042b in Windows 10 Installation and Upgrade to solve the problem; Hello, I have been trying intermittently for several days to update to 21H1. I tried SFC and it came out without errors. Hope someone here can help me... Discussion in 'Windows 10 Installation and Upgrade' started by TimothyKimmel1, Dec 7, 2021.

  1. Installation of update 21H1 failed error 0x8007042b


    Hello, I have been trying intermittently for several days to update to 21H1. I tried SFC and it came out without errors. Hope someone here can help me update my computer. Thanks in advance for any assistance!

    :)
     
    TimothyKimmel1, Dec 7, 2021
    #1
  2. TruongAnh Win User

    Fails on Windows Insider update, error 0x8007042b

    My PC run in dual boot, 1st disk run Windows 8.1, in the 2nd Windows 10 Pro in Insider.

    Till 3/17/2019 it was update normally, after that several times update was fails,

    Because error 0x8007042b

    I would trying many manner but none success!

    - Disable anti-virus app.

    - Change windows account

    - Change to mono-boot.

    - Run and scan system, check disk, defrag disk,...

    Please help me! Sorry by my bad English.

    Below is update histories:

    View update history

    Uninstall updates

    Recovery options

    Feature update to Windows 10, version 1903 x64 2019-04

    Failed to install on 5/14/2019 - 0x8007042b

    Windows 10 Insider Preview 10.0.18362.30 (19h1_release) amd64 2019-04

    Failed to install on 5/14/2019 - 0x8007042b > Definition Updates (5)

    Windows 10 Insider Preview 18890.1000 (rs_prerelease) (2)

    Last failed install attempt on 5/3/2019 - 0x8007042b

    Windows 10 Insider Preview 18875.1000 (rs_prerelease) (2)

    Last failed install attempt on 4/18/2019 - 0x8007042b

    Windows 10 Insider Preview 10.0.18362.30 (19h1_release) amd64 2019-04 (4)

    Last failed install attempt on 4/18/2019 - 0x8007042b

    Windows 10 Insider Preview 18362.1 (19h1_release) (4)

    Last failed install attempt on 4/3/2019 - 0x8007042b

    Windows 10 Insider Preview 10.0.18362.1 (19H1_RELEASE) amd64 2019-03 (5)

    Last failed install attempt on 3/25/2019 - 0x8007042b

    Windows 10 Insider Preview 18361.1 (19h1_release) (3)

    Last failed install attempt on 3/21/2019 - 0x8007042b

    Windows 10 Insider Preview 18358.1 (19h1_release)

    Successfully installed on 3/17/2019 See what's new in this update
     
    TruongAnh, Dec 7, 2021
    #2
  3. jds21 Win User
    Windows Updates failed to instal

    I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

    Thanks mate
     
    jds21, Dec 7, 2021
    #3
  4. chideock Win User

    Installation of update 21H1 failed error 0x8007042b

    KB4025339 Fails Install 0x80070564

    Thanks
    I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

    At step 2 same troubleshooter error. The KB finished a new download failed to install.
    Did step 3 KB has downloaded but fails to install.

    If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

    Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

    I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!
     
    chideock, Dec 7, 2021
    #4
Thema:

Installation of update 21H1 failed error 0x8007042b

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