Windows 11

Top 7 Fixes for the Windows Install Error – 0x80070643

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The install error – 0x80070643 is one of the many Windows update errors. Occasionally, errors may arise when updating system components like Windows Defender, Microsoft .NET Framework, or quality and cumulative Windows system updates.

The error can occur due to a malfunctioning Windows Update service, corrupted .NET Framework installation, power interruption, malware, installation error, incorrect settings, antivirus interference, or, in rare cases, a hardware issue such as a defective hard drive or memory module.

Quick Workarounds

  1. Restart your PC
  2. Retry install the update.
  3. Retry installation for the program generating the error.
  4. Check your internet connection and ensure it is fast and stable.
  5. Close all the programs currently running on your system and retry the update.
  6. Temporarily disable your antivirus program.

1. Run the Windows Update troubleshooter

When you run the Windows Update troubleshooter, it will scan your computer for problems with Windows Update. It will attempt to repair any error it finds automatically. If the troubleshooter doesn’t fix the problem, it will provide detailed information about the error and suggest solutions.

To run the Windows Update troubleshooter, follow these steps:

  1. Firstly, open the computer’s Settings by pressing the Windows key + I together.
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  2. Then, click on System on the left pane.
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  3. After that, click on Troubleshoot and select Other troubleshooters.
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  4. When you see the list, select Windows Update from the available options and click the Run button.
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  5. Finally, allow the Windows Update troubleshooter to run for a while to scan and detect the issues in your computer.
  6. Finally, select the appropriate response when prompted.

2. Reset the Windows Update component

Resetting the Windows Update component will reset all Windows Update settings and components to their default state, which can sometimes fix problems caused by corrupted or missing files or incorrect settings. To reset the Windows Update component, follow these steps:

  1. Press the Windows and S keys simultaneously and enter command prompt in the text field.
  2. Then, select Run as administrator on the right side to open the Command prompt as an admin.
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  3. When prompted, Click on Yes on the User Account Control prompt.
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  4. When the Command Prompt opens, enter the following commands and hit Enter after each key to disable some update services:
    net stop cryptsvc
    net stop bits
    net stop wuauserv

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  5. After that, enter this rename command for the SoftwareDistribution folder and press Enter:
    Ren %systemroot%\SoftwareDistribution SoftwareDistribution.old
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  6. Then, modify the catroot2 folder using the command below and hit Enter:
    Ren %systemroot%\System32\catroot2 catroot2.old
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  7. Then, enter these command codes for restarting services and hit Enter after each:
    net start cryptsvc
    net start bits
    net start wuauserv

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  8. Finally, restart your computer.

3. Perform clean boot

Performing a clean boot on your Windows operating system allows it to start without additional programs or services. This process helps identify whether the cause of the issue is a program or service that initiates during the boot process. Here is how to do it:

  1. Press the Windows and R buttons to open the Run dialog.
  2. Now type msconfig in the Run entry box, and press Enter or click OK.
  3. Then, find the Services tab, click on it, and tick on the Hide all Microsoft services box.
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  4.  Click on the Disable all button and then click Apply.
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  5. Select the Startup tab and then click Open Task Manager.
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  6. Now right-click on the first enabled app on the Task Manager tab and click Disable.
  7. Finally, follow step 6 to disable all enabled applications one after the other.
  8. After disabling the apps, close Task Manager.
  9. Restart your PC.

4. Scan for malware or virus

Scanning for malware or viruses can help resolve the Install Error 0x80070643, as malware infections can sometimes cause this error to occur. During the scan, your antivirus software will look for malicious files or programs on your computer and attempt to remove them. You may use any trusted antivirus of your choice.

Here is how to perform a malware scan:

  1. In the search box, search for Windows Security.
  2. Click on the relevant search result to open the application.
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  3. Now click Virus & threat protection.
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  4. Next, click on the Scan options to view all available scans.
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  5. Choose the Full scan option and click the Scan now button to do a deep scan on your PC for viruses or malware.
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5. Perform DISM/SFC scan

The System File Checker (SFC) and Deployment Image Servicing and Management (DISM) tools are built-in Windows tools that can scan for and repair corrupted system files, including Error 0x80070643. Here is how to run the utility:

  1. Press the Windows and S keys simultaneously and enter Command Prompt in the text field.
  2. Then, select Run as administrator on the right side to open the Command prompt as an admin.
    error 2001-0123
  3. When prompted, Click on Yes on the User Account Control prompt.
    error 2001-0123
  4. When the Command Prompt opens, enter the following commands and hit the Enter key after each command to start a DISM scan:
    DISM /Online /Cleanup-Image /CheckHealth
    DISM /Online /Cleanup-Image /ScanHealth
    DISM /Online /Cleanup-Image /RestoreHealth
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  5. Afterward, enter the command below and press the Enter key to execute the SFC scan:
    sfc /scannow
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  6. Finally, it would be best to restart your computer to implement repairs.

6. Install Windows Update in Safe Mode

Installing Windows Update in Safe Mode can help to fix Error 0x80070643 by temporarily deactivating any third-party software or services that may be causing the error. This process can also help detect and fix any corrupted system files that may prevent the update from being installed successfully.

To install Windows Update in Safe Mode, follow these steps:

  1. Click the Power icon on the login screen, hold Shift, and select Restart.
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  2. Choose Troubleshoot from the menu options.
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  3. Select Advanced options.
  4. Afterward, click Advanced options to access other options. Now click Startup Settings.
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  5. After that is done, click Restart.
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  6. Press 5 on your keyboard to start Enable Safe Mode with Networking.
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  7. Once Windows starts in Safe Mode, open Settings, open Updates & Security, and click Update now.

7. Restart Windows Update Services

Restarting the Windows Update services can repair the Windows Install Error – 0x80070643 by refreshing the services and clearing temporary errors that may have happened. To restart the Windows Update services, you can follow these steps:

  1. Press the WindowsR simultaneously to launch the Run dialog, type services.msc, and hit Enter.
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  2. When the Services window opens, right-click Background Intelligent Transfer Service, click Restart, or select Start if the Restart option is greyed out.
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  3. Find the Windows Update, Windows Installer, and Cryptographic Services options and repeat step 2 for all of them.
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In conclusion, Windows Install Error – 0x80070643, like  Windows Update Error 0x800f0845 and Windows Update Error 0x8024000f has several effective solutions. Implementing the top 7 fixes outlined in this guide can help you successfully address this error and proceed with your Windows installation.

Whether it involves checking for system updates, repairing corrupted files, or reinstalling problematic software, these solutions offer a comprehensive approach to resolving the 0x80070643 error. Remember to follow the steps carefully and choose the fix that best suits your specific situation.

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Richard Omachona
Richard is a techie in providing fixes and solutions for computer issues of various kinds. Among his contemporaries, he is a preferred choice. His experiences are vast in Windows operating systems, and several other skills in programming such as Python, Web Frontend designing implementing at industry standards, best practices in HTML, CSS and JavaScript. and basics in Web Backend. He also loves traveling, gaming and music.