FIX: Error 0x80070643 while installing Windows update KB3122947.

If you get the error 0x80070643 when trying to apply update KB3122947 to your system trough Windows Update then try the following steps to see if they resolve your problem, we suggest you try method 1 first, since it seems to be working for most people, the other steps are general troubleshooting tips since there is not yet a confirmed way of solving it.

1. Manually Apply the update to your system

This seems to be working for many people, I suggest you give it a shot. However the update itself has to be downloaded! If it did not then this solution won’t work for you.

1. Open an Elevated Command Prompt by pressing the Windows + X key at the same time and then choose Command Prompt Admin. Or Right-click start and choose Command Prompt (Admin)

2. Once Command Prompt has opened, type or paste the following command and hit enter.

If it can’t find the file, then try this command, you might be running 32 bits Windows 10.

 

3. If the file is found then Windows will attempt to install the update, if you receive an error on both commands then you could try the troubleshooting steps below, however in most cases these won’t help with this particular issue, but it’s worth a shot.

2. Check your System for Corrupted System Files

Windows uses just like all your programs a lot of files to make everything happen on your operating system, if these become corrupted / damaged weird things can happen on your system, it is therefore advised to first scan and see if you have any of these corrupted files on your system.

System File Checker scans the system and finds and replaces corrupted system files with the correct one.

  1. On your keyboard press the Windows + X key at the same time, or right-click the Windows icon in your task bar
    Or open start and type CMD, then right-click command prompt and choose Run as Administrator
  2. Now click on Command Prompt (Admin)
    Power Menu: Command Prompt (admin) FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    Power Menu: Command Prompt (admin)

  3. Once Command Prompt has started, click the Window, and type “SFC /scannow” (without the “) and hit enter
    SFC FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    SFC

  4. Wait for this process to complete.

If you get a message that everything succeeded then try to run Windows Update again, if you get an error message which contains that corrupted files were found but cannot be repaired then please try to use a Restore Point

3. Run DISM.exe to solve updating problems

The next thing we are going to try is to use the Deployment Image Servicing and Management tool (DISM), this uses Windows Update to download files needed to fix corruptions on your system

To resolve this problem, use the inbox Deployment Image Servicing and Management (DISM) tool. Then, install the Windows update or service pack again.

  1. On your keyboard press the Windows + X key at the same time, or right-click the Windows icon in your task bar
    Or open start and type CMD, then right-click command prompt and choose Run as Administrator
  2. Now click on Command Prompt (Admin)
    Power Menu: Command Prompt (admin) FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    Power Menu: Command Prompt (admin)

  3. Once Command Prompt has started, click the Window, and type “DISM.exe /Online /Cleanup-image /Restorehealth” (without the “) and hit enter
    DISM FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    DISM

  4. Wait for this process to complete.

4. Clean Boot

After some time, the amount of programs and services on your computer will reach a high number, and this does not matter in most cases, however there can be one program between them which are causing the Windows update issues, therefore we going to try to do a clean boot.

  1. Press the Windows + R keys at the same time on your keyboard, a Run Window will appear, then type “msconfig” and hit enter
    or open start and type msconfig and then click on msconfig
    Run: MSConfig FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    Run: MSConfig

  2. Then choose Selective Startup
  3. Then make sure only Load System Servicesis checked.
    Clean boot 1 - 2 FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    Clean boot 1 – 2


  4. Now click on the Services tab
  5. Check the box: “Hide all Microsoft Services
  6. Click the button: “Disable All
  7. Click on OK and reboot your system when prompted.
    Clean boot 4-7 FIX: Error 0x80070643 while installing Windows update KB3122947. KB3122947

    Clean boot 4-7

Try to apply the Windows Updates again, if it now works then install them all. After you finished this make sure to repeat step 1 above and then choose Normal Startup.

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About The Author
Yuri Pustjens
Yuri Pustjens
2014, 2015 & 2016 Microsoft Most Valuable Professional Windows Yuri specializes in troubleshooting (crash analysis and devices), system resource utilisation and system performance. He is also very interested in Customer Security. Yuri can be found as Windows Community Moderator and Wiki Author on Microsoft Answers and is active on different communities all across the web.

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