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Cumulative update December 2020 - KB4592438 Failed to install

Anonymous
2020-12-08T21:29:51+00:00

I am trying to install KB4592438 for Windows 10 20H2. The patch is downloaded without any issue. But the installation fails and the screen starts showing - Undoing changes Don't turn off your computer. The error message is - Some update files are missing or have problems. We'll try to download the update again later. Error code: (0x80070003). 

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  1. Anonymous
    2020-12-08T22:58:44+00:00

    you must install the SSU December 2020 update before installing CLU update, 

    .you can get full download update from windows 10 20h2 update history page

    2 people found this answer helpful.
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  2. Anonymous
    2020-12-09T12:20:28+00:00

    Thanks, RAJU.MSC.MATHEMATICS for your response. But the servicing stack update KB4593175 is already installed. Installed the LCU a second time. but returned back withe the same error.

    3 people found this answer helpful.
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  3. Anonymous
    2020-12-09T12:28:00+00:00

    then you must to do sfc advanced scannow and dism offline clean up image option.

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  4. Anonymous
    2020-12-09T15:10:35+00:00

    I have the same issue. Followed all of the above steps - december SSU was already installed

    C:\Windows\system32>sfc /scannow

    Beginning system scan.  This process will take some time.

    Beginning verification phase of system scan.

    Verification 100% complete.

    Windows Resource Protection did not find any integrity violations.

    C:\Windows\system32>dism /online /cleanup-image /restorehealth

    Deployment Image Servicing and Management tool

    Version: 10.0.19041.572

    Image Version: 10.0.19042.630

    [===========================84.9%=================         ]

    [===========================86.1%=================         ]

    [===========================87.3%==================        ]

    [===========================88.7%===================       ]

    [===========================89.9%====================      ]

    [===========================91.1%====================      ]

    [==========================100.0%==========================] The restore operation completed successfully.

    The operation completed successfully.

    Same result - the installation fails with error 0x80070003

    8 people found this answer helpful.
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  5. Anonymous
    2020-12-09T15:34:27+00:00

    last try,  Create system restore point  for security.

    .if you have windows 10 20h2 iso file , then exact file, then run setup.exe with admin rights, follow on-screen instructions

    1 person found this answer helpful.
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