Now, as we all know, Windows Updates are very important as they patch system vulnerabilities and makes your PC more secure from the external exploit. The Windows Update Error 0x80070643 may be caused by corrupted or outdated system files, incorrect Windows update configuration, corrupted SoftwareDistribution folder, etc. Anyway, without wasting any time, let’s see How to Fix Windows Update Error 0x80070643 with the help of the below-listed tutorial.

Fix Windows Update Error 0x80070643

Make sure to create a restore point just in case something goes wrong.

Fix Windows Update Error 0x80070643 Method 1: Install the latest .NET Framework Method 2: Run Windows Update Troubleshooter Method 3: Run SFC and DISM Method 4: Restart Windows Update Service Method 5: Run .BAT File to Re-register DLL files Method 6: Temporarily Disable Antivirus and Firewall Method 7: Install the Updates Manually

Method 1: Install the latest .NET Framework

Sometimes this error is caused by damaged .NET Framework on your PC and installing or re-installing it to the latest version can fix the issue. Anyway, there is no harm in trying, and it will only update your PC to latest .NET Framework. Just go this link and download the .NET Framework 4.7, then install it. Download latest .NET Framework Download .NET Framework 4.7 offline installer

Method 2: Run Windows Update Troubleshooter

  1. Press Windows Key + I to open Settings then click on Update & Security.

  2. From the left-hand menu, make sure to select Troubleshoot.

  3. Now under Get up and running section, click on Windows Update.

  4. Once you click on it, click on “Run the troubleshooter” under Windows Update.

  5. Follow on-screen instructions to run the troubleshooter and see if you’re able to Fix Windows Update Error 0x80070643.

Method 3: Run SFC and DISM

  1. Open Command Prompt. The user can perform this step by searching for ‘cmd’ and then press Enter.

  2. Now type the following in the cmd and hit enter:

  3. Wait for the above process to finish and once done, restart your PC.

  4. Again open Command Prompt and perform this step by searching for ‘cmd’ and then press Enter.

  5. Now type the following in the cmd and hit enter after each one:

  6. Let the DISM command run and wait for it to finish.

  7. If the above command doesn’t work, then try on the below: Note: Replace the C:\RepairSource\Windows with your repair source (Windows Installation or Recovery Disc).

  8. Reboot your PC to save changes.

Method 4: Restart Windows Update Service

  1. Press Windows Key + R then type services.msc and hit Enter.

  2. Find Windows Update service in this list (press W to find the service easily).

  3. Now right-click on Windows Update service and select Restart.

Try to perform Windows Update again and see if you’re able to Fix Windows Update Error 0x80070643.

Method 5: Run .BAT File to Re-register DLL files

1.Open Notepad file then copy & paste the following code as it is: 2. Now click on File then select Save As.

  1. From Save as type drop-down select “All Files” and navigate where you want to save the file.

  2. Name the file as fix_update.bat (.bat extension is very important) and then click Save.

  3. Right-click on the fix_update.bat file and select Run as Administrator.

  4. This will restore and register your DLL files fixing the Windows Update Error 0x80070643.

Method 6: Temporarily Disable Antivirus and Firewall

Sometimes the Antivirus program can cause an error, and to verify this is not the case here, and you need to disable your antivirus for a limited time so that you can check if the error still appears when the antivirus is off.

  1. Right-click on the Antivirus Program icon from the system tray and select Disable.

2.  Next, select the time frame for which the Antivirus will remain disabled.

Note: Choose the smallest amount of time possible, for example, 15 minutes or 30 minutes. 3. Once done, again try to connect to open Google Chrome and check if the error resolves or not. 4. Search for the control panel from the Start Menu search bar and click on it to open the Control Panel.

  1. Next, click on System and Security then click on Windows Firewall.

  2. Now from the left window pane click on Turn Windows Firewall on or off.

7. Select Turn off Windows Firewall and restart your PC.

Again try to open Google Chrome and visit the web page, which was earlier showing the error. If the above method doesn’t work, please follow the same steps to turn on your Firewall again.

Method 7: Install the Updates Manually

  1. Right-click on This PC  and select Properties.

  2. Now in System Properties, check the System type and see if you have a 32-bit or 64-bit OS.

  3. Press Windows Key + I to open Settings then click on Update & Security icon.

  4. Under Windows Update note down the “KB“ number of the update which fails to install.

  5. Next, open Internet Explorer or Microsoft Edge then navigate to Microsoft Update Catalog website.

  6. Under the search box, type the KB number you noted in step 4.

  7. Now click on Download button next to the latest update for your OS type, i.e. 32-bit or 64-bit.

  8. Once the file is downloaded, double-click on it and follow on-screen instructions to complete the installation. Recommended:

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That’s it you have successfully Fix Windows Update Error 0x80070643 but if you still have any queries regarding this post then feel free to ask them in the comment’s section.

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