WiseCleaner Think Tank

Encounter difficult computer problems?
All about maintenance and optimization of your Windows System.

Home > Think Tank > 7 Ways to Fix Windows Update Error 0x80070643

7 Ways to Fix Windows Update Error 0x80070643

Feb 29, 2024

Windows Update Error 0x80070643 is an error code that occurs while trying to update the Windows operating system or install certain applications. This error can be caused due to several reasons. Common causes of this error include

To fix this error, you can try some common fixes like running Windows Update troubleshooter, checking system files, resetting Windows Update components, temporarily disabling antivirus software, etc. The following are the specific methods and steps.

Method1. Reboot your PC

Sometimes restarting your computer can quickly resolve errors that occur. You only need to click on Windows Start, and select Power > Restart. Check again after restarting to see if the error has been resolved.

Method2. Restart Windows Update Services

When the Windows Update service crashes or errors, it may cause the 0x80070643 installation error. You can check whether the problem is solved by restarting the Windows Update service.

Step1. Open the Services

Press Win + R to open the Run dialog, type services.msc in the text box, and press OK.

Step2. Restart Windows Update Services

Find Background Intelligent Transfer Service in the list, right-click it and select Restart. If the option is grayed out, select Start.

Keep scrolling your mouse to find Windows Update and Cryptographic Services in the list, right-click on each of them, and select Restart. If the option is grayed out, select Start.

Method3. Run Windows Update Troubleshooter

If none of the above methods resolves the error, you can try using Windows Update Troubleshooter, which helps you with suggestions and automatic fixes to resolve update-related issues.

Step1. Open the Troubleshooter

Click on Windows Start and type Troubleshoot Settings in the search box. Find the matched item and open it.

Step2. Run Windows Update troubleshooters

Click Other troubleshooters in Settings.

Then find Windows Update in the list, and click Run.

Method4. Run SFC to Fix Corrupted System Files

Corrupted files inside your computer can also cause update errors, so you can use SFC to scan and fix errors.

Step1. Open the Command Prompt

Click on Windows Start and type cmd in the search box. Find the matched item and run it as administrator.

Step2. Type the command to scan the computer

Type the following command and press Enter.

sfc/scannow

When the scan is finished, check again to see if the error has been fixed.

Method5. Reset Windows Update Components

When an update error occurs, it is often necessary to check and fix issues related to the update component to restore the normal operation of the update function. You can follow the steps below to reset the update component.

Step1. Open the Command Prompt

Click on Windows Start and type cmd in the search box. Find the matched item and run it as administrator.

Step2. Type the command to reset Windows Update Components

Type the following commands one by one, pressing Enter after each

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

When the above commands have been executed, restart your computer.

Method6. Run DISM Command

DISM scans and repairs corrupted system images, which is useful for resolving update errors. You can follow the steps below to accomplish this.

Step1. Open the Command Prompt

Click on Windows Start and type Command Prompt in the search box, find the matched item, and run it as administrator.

Step2. Type the command to scan

Enter the following command and hit Enter.

dism.exe/cleanup-picture/restorehealth

Once the scan is complete, restart your computer.

Method7. Run an anti-malware scan

When a computer is infected with a virus, it can affect Windows Update and prevent it from installing security fixes. If your computer keeps showing error 0x80070643, you need to rule out any possibility of a malware infection.

The above methods can help you fix Windows Update Error 0x80070643. If these methods fail to solve the problem, further troubleshooting or professional technical support may be required.

20