Windows Update Error Code 0x80070643 {Solved}

Errors related to Windows Update might arise when updating the operating system or when installing new software. Windows 10 x64-based systems (KB4023057) – Error 0x80070643″ is the message accompanying Error Code 0x80070643. It may be something like this, for example.

Microsoft Security Essentials, Microsoft Office, Windows Update, and more all have the same error code of 0x80070643, which means it can occur in any of these products. The update may be downloaded without issue, however an error prevents it from being installed.

How To Guides
How To Guides

Windows Update Error Code 0x80070643

Error Code 0x80070643 can be fixed with these methods. Error Code 0x80070643 can arise for a variety of reasons. These solutions may or may not work for you. In order to select the best one for you, you must try all of them.

1. Restarting Your Computer 

Error 0x80070643 can be fixed simply restarting your computer, which is as simple as it sounds. You may need to restart your computer in order to reinstall the programme, as the previous installation may have needed this.

2. Disable The Antivirus Program

0x80070643 problem might be caused by a disagreement between your PC’s anti-virus software and Windows updates. If this is the case, you can temporarily disable your Antivirus software and see if you can update your system or not. Antivirus can be disabled by following these steps:

Step 1: Start by performing a right-click on the antivirus program’s icon and then selecting Disable from the drop-down menu that appears.

Step 2: Also, choose the time period for which you want to disable the programme. The very minimum of time, such as 15 or 30 minutes, is recommended.

Make sure the Definition Update for Windows Defender– Error 0x80070643 error disappears by running the Windows Defender.

3. Restart The Windows Installer Service 

This error number 0x80070643 may appear on your screens if the Windows Installer Service on your machine is configured incorrectly. The Windows Installer service should be restarted in order to resolve this issue. To do so, perform the steps outlined in the following section:

Step 1; Press the Windows key and the R key simultaneously on your keyboard. As soon as you’ve done that, type “services.msc.” and click Enter.

Step 2: You can now restart your computer by selecting ‘Restart’ from the Windows Installer menu item. To test whether this problem goes away, try installing the Windows updates.

4. Update PC’s Windows Defender Software

Manually installing the updates is an option. To manually install system updates:

Step 1: Find “Windows Defender” by pressing ‘Windows key + Q’ at the same time. Under “Protection Areas,” select Virus and Threat Protection from the drop-down menu.

Step 2: You’ll then see “Virus and threat protection updates,” so click on that. Go to the “Check for updates” button and press it after that.

It will take a few minutes for the newest updates to be downloaded. Restart your computer to apply the changes.Additionally, you can update Windows Defender in your computer by using the Command Prompt. Because of this:

Step 1: Using “Windows + X” to bring up a list of choices, select “Command Prompt (Admin)” from the list.

Step 2: Once you’ve completed the first two steps, type the following commands into the command prompt and click Enter:

” percent PROGRAMFILES percent Windows DefenderMpCmdRun.exe” – Remove Definitions – All – Signature Change

Take a few minutes for the command to process after you’ve input it.

Step 3: When you’re done, shut down and restart your computer.

 5. Update The NET Framework 

Installing system updates necessitates the.NET Framework. If your PC’s.Net framework is damaged or absent, updating your operating system will be extremely difficult. This means that downloading the most recent version of is critical. Installing the Microsoft.

Net framework on your computer. These are the procedures you must follow in order for it to be downloaded and set up:

Step 1: Microsoft. Net framework’s official website should be the first place you visit in this process.Find the most recent version of the Microsoft.NET Framework.

Step 2: Download the file. Install the downloaded file by opening it and following the on-screen directions..

As soon as the installation is complete, run Windows Update to see whether any system updates have been installed.

6. Run a Scan Or SFC 

Step 1: In order to open the “Command Prompt (Admin)” menu, press ‘Windows + X’. SFC/Scannow is a command that can be entered into the Command Prompt.

Step 2: Wait for the scan to be completed on your PC. Attempt to complete the installation of the new software.

It’s possible that corrupted files on your computer are preventing your Windows from being updated. SFC scans can be used to quickly identify and replace faulty files in your system.

7. Clean Booting Your Computer 

This issue might be caused by third-party applications and programmes that conflict with your Windows operating system. In other words, you need to start your computer from scratch and then attempt to install the Windows updates again.

8. Use Troubleshooting 

Step 1: Using the “Start menu,” search for “Troubleshoot” and select the “Troubleshoot” option from the search results. After extending the Windows Update option, click on the “Run the Troubleshooter” option.

Step 2: Complete the Windows Update Troubleshoot by following the on-screen directions.The final step is to restart your computer and see if the problem has been fixed.

9. System Restore Function

If you’re seeing this problem on your PC, you should make a system restore point. Error-free and stable Windows operating systems can be restored with this utility. Data and personal information will not be affected. It’s possible that all of the drivers and programmes you’ve installed since that restore point may be deleted.

 10. Fix the Problem by Resetting Windows Update Components

Step 1: First, open the command prompt (Admin) by pressing “Windows + X” and selecting “Command Prompt (Admin)” from the drop-down menu.

Step 2: Type the following commands one at a time, pressing ‘Enter’ after each one. With this, you can disable Windows Update:

the internet has been shut down

cryptSvc is being terminated through net stop.

Bits of net to stop

msiserver is stopped with the command net stop msiserver.

Step 3: After this, type the following instructions and press ‘Enter’ after each one of them to rename the Software Distribution Folder.


SoftwareDistribution SoftwareDistribution.old

To remove Catroot2, run Ren C:WindowsSystem32:catroot2.old

Step 4: Once you’ve completed the previous steps, input the supplied commands to start the update services and press Enter after each command.

wuauserv can be started via the internet.

The net start cryptScv

The first bits of the net

the net start msiserver

Check to see if the issue code 0x80070643 disappears after a system reboot.

 11. Disable Windows Defender in the Control Panel

It can be difficult to find a restore point in Windows 10 because it doesn’t exist. The following simple procedures will let you revert Windows 10 back to its original state and delete the Windows Defender Update.

Step 1: To open the Run window, press ‘Windows + R’ at the same time. Enter “appwiz.cpl” and click “Enter.” This will open the “Programs and Features” menu.

Step 2: Next, click on the “View Installed Updates” icon on the screen’s far left side. As a final step, look for and click on “Windows Defender or KB4054517 Update” in Microsoft Windows to fix the problem.

Step 3: Click “Uninstall” and restart your PC to complete the process. Make sure the error is gone before moving on to the next step.

 12. Use Administrative Permissions

If you’re using your PC as a guest or from a less-privileged account because you haven’t joined up, you should do so right now. This is due to the fact that updates cannot be installed until the administrator permissions have been properly configured. Call the system administrator if you don’t know how to access your computer’s domain.

13. Run The SubInACL Tool

Some apps cannot be installed because of a flaw in the.NET Framework 2.0 that is caused by incorrect permissions on registry hives in the access control list. This flaw typically affects older versions of Windows, such as Windows XP and Vista.

Using the SubInACL utility, you may correct the corrupted file and registry permissions that are necessary for MSI-based configurations to be successfully installed. You can accomplish the same by following the instructions:

Step 1: The first step is to download and install the “SubInACL” tool on your PC. This tool’s location is: C:Program Files (x86)Windows Resource Kits (x64)Tools.

Step 2: Use Notepad to paste the provided code.

setlocal echo with @echo off Identify whether the computer is a 32-bit or 64-bit model.
In this case, if “% PROCESSOR ARCHITECTURE percent “==”x86”, then “% PROCESSOR ARCHITEW6432 percent “==”” will be used. x86 set ProgramFilesPath=% ProgramFiles(x86)%
go back to the beginning
Resetting\s:x86\sset Program Files Path = percent Program Files Percent: Start Windows Resource KitsTools” percent ProgramFilesPath” percent ProgramFilesPath subinacl.exe” navigate to the files Exist\secho Unable to locate the specified file. Windows Resource Kits Tools % ProgramFilesPath subinacl.exe. Check to see that SubInAcl is installed correctly then rerun this script.
the filesExist pushd to the end “% ProgramFilesPath% % Windows Resource KitsTools”
the subinacl.exe /subkeyreg Grant administrators and the system access to HKEY LOCAL MACHINE/grant.
the subinacl.exe /subkeyreg subkey command /grant=administrators=f /grant=system=f HKEY CURRENT USER
incl.exe /subkeyreg subinacl The HKEY CLASSES ROOT registry key grants access to administrators and systems, respectively.
Run the programme subinacl.exe with the following parameters: %WinDirectory%%%%%%%%%%
echo.\secho Any key can be used to quit…
Stopping to think about it

Then select “Save As” from the “File” menu.

Step 3: Type “reset.cmd” in the command line. Finally, select “All Files” as the file type.Now right-click and select “Run as Administrator” from the context menu.

Wait for the system to restart. Windows updates should be installed after the cmd script is finished.


This issue can irritate you in a variety of ways, and the methods listed above have been tried and true. If this problem code 0x80070643 occurs on your computer, you can use this method to fix it.