Getting an ugly-ass error like  0x80070643 on your computer is one of those things that can annoy you till the next morning. 

Whether you were trying to install a Windows Update or installing a particular program, this particular error can pop up for a number of reasons, reasons which I will get into down below.

In this quick, simple guide I’ll try and help you fix the error 0x80070643 on your Windows computer.

Let’s dive right in.

 

Note

Now before you take the appropriate action to try and fix this error, it’s best to understand where this error was encountered. 

This is where there are two possible scenarios: 

  1. you get the error when you’re trying to install some updates in Windows Update.
  2. you get the error during a program installation.

Depending on where you get it, the solutions below should be followed by following where you’d encountered the error. 

 

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How to Fix Error 0x80070643 on Windows: 7 Ways

 

Fixing the 0x80070643 Error in Windows Update.

1.  Installing the Latest .NET Framework.

The .NET Framework plays an important part in how your PC gets its updates. 

If this .NET Framework were to say get damaged, corrupted or missing from your computer, then it would cause your PC to fail to install updates. 

Which is bad because without updates your PC goes into chaos mode like if Popeye were to lose his spinach can.

It’s pretty simple to download and install this .NET Framework yourself, I’ll show you how:

Step 1:  Jump into Microsoft’s NET Framework download page.

 

Step 2:  Next, click on the latest version of .NET Framework which would be the version with the biggest number (at the top).

 

Fix Error 0x80070643 on Windows

 

Step 3:  The download should automatically begin. Otherwise, click on the Try again button.

 

Fix Error 0x80070643 on Windows

 

Step 4:  Lastly, open the downloaded file and then simply follow the on-screen instructions to install the new updated .NET Framework just like how you would install any new program.

Done. You can try once again to try and run the Windows Update to see if it can be installed and the error 0x80070643 does not pop up.

 

 

2.  Run an SFC Scan to Scan Your Computer for the Problem.

Think of an SFC scan like a regular doctor’s checkup for any issues except in this case it’s with your computer.

It helps to identify where the problem lies and consecutively move forward to fix it.

I’ll show you how you can do an SFC scan:

Step 1:  Go ahead click on the Start button to your bottom left-hand corner.

 

Step 2:  Next, type “cmd” into the search. You should see Command Prompt pop up in the search. What you want to do is right click on Command Prompt and then select Run as an administrator.

 

Fix Error 0x80070643 on Windows

 

Step 3:  Now type “sfc /scannow” (without the quotes). Then hit Enter on your keyboard.

 

Fix Error 0x80070643 on Windows

 

Step 4:  Wait for the scan to be completed.

 

Fix Error 0x80070643 on Windows

 

Step 5:  Once it is complete, simply close the Command Prompt window and then just proceed to try installing the Windows updates once again.

 

 

3.  The Method.

This is the method that worked for me when I encountered the same 0x80070643 error on my Windows PC.

Credit goes to Tim Willingham over at Microsoft forums for pointing these steps out. 

Here’s what I did and what you can try to.

Step 1:  Go ahead search for Services on your Windows PC.

 

Step 2:  Next look for Background Intelligent Transfer Service in the Services list and then right-click to Stop it.

 

Fix Error 0x80070643 on Windows

 

Step 3:  Consecutively do the same by looking for Windows Update in the Services list and then right-click to Stop it as well.

 

Fix Error 0x80070643 on Windows

 

Step 4:  Now open up your File Explorer and then copy-paste the following link into the search bar at the top:

c:\Windows\SoftwareDistribution\Download

 

Fix Error 0x80070643 on Windows

 

Step 5:  Then delete all the contents in it. This will not delete any of your data that resides on your PC. It will only delete any latest Windows updates so that we can start afresh.

 

Fix Error 0x80070643 on Windows

 

Step 6:  Finally, proceed to install Windows updates. This should work to fix the error.

 

 

4.  Yet Another Worthy Method.

This is another method that has worked for one of our readers named Marco Oliveira.

The following is what he did to fix the error:

Step 1:  Jump into your Apps & Features option in your Windows Settings.

 

Step 2:  Next, under the list of apps, look for the update with the said error code (for example “Windows Update #4023057). It should be listed under Installed Programs as an update.

 

Step 3: Now, remove the update by uninstalling it by right-clicking the update and selecting Uninstall.

 

Fix Error 0x80070643 on Windows

 

Step 4:  Lastly, restart the computer and then run the Windows update once again.

 

 

5.  Update your Windows Defender Antivirus manually.

One of the many ways a Windows Update can fail and throw an error 0x80070643 relates to Windows Defender Antivirus if it fails to update. 

In this case, what we can do is manually help update Windows Defender so that it can allow the Windows Update to smoothly succeed.

Here’s how you can manually update your Windows Defender Antivirus:

Step 1:  Jump on to Microsoft’s Latest Updates for Windows Defender page.

 

Step 2:  Next scroll all the way down the page and look for the latest update that matches your operating system and whether it is 32-bit or 64-bit.

 

Fix Error 0x80070643 on Windows
It’s the topmost one. The Windows Defender Antivirus for Windows 10 and Windows 8.1.

 

Step 3:  Great. Now open up the file you have just downloaded and then install the update onto your computer (just like how normally would).

 

Step 4:  Lastly, restart your computer and then run Windows Update once again to see if the 0x80070643 error pops up once again.

 

 

6.  You Can Also Just Disable Your Antivirus Software Temporarily.

If you’re not just using Windows Defender as your main antivirus and you have the others like Kaspersky, Bitdefender or Norton installed, then it’s important to test by disabling the antivirus temporarily.

Antivirus software can conflict with programs on Windows since they need their routine checkups and blocking. This increases the chances of you coming face to face with the 0x80070643 error.

So disable any antivirus you have on your computer and then proceed to try and then run Windows Update once again.

 

 

Fixing the 0x80070643 Error in Windows Update.

1.  Restart Your Computer.

One go-to method to try and fix this is by restarting your computer.

It’s possible that a previous installation may require the computer to restart completely otherwise it’ll throw such an error. 

You can try to restart your computer and then install your program once again.

 

 

2.  Restart the Windows Installer Service.

Faulty configurations in your Windows Installer Service can screw up your installations and causes various errors to pop up like the 0x80070643 you’re getting now. 

Restarting the Windows Installer Service can help fix the error.

Here’s how you do it: 

Step 1:  Open up your computer and then on your keyboard (no matter whichever page you’re on, Homepage, Google Chrome, etc) Press on both the Windows Key and the R key to call up the Run box.

 

Step 2:  Got it? Sweet. Next, type “services.msc” (without the quotes) into the box and then hit the Enter button on your keyboard.

 

How to Fix Error 0x80070643 on Windows

 

Step 3:  Now what you should see is the Windows Installer Service window. Over here you want to click on Windows Installer and then click the little Restart button.

 

You’re done! You can restart your computer too (if you want) but this method should work to fix any stuck-ups your computer may have gotten itself into. 

Try installing your program once again to see if the error is troubling you once again.

 

 

3.  Repair and Install .NET Framework.

A corrupted .NET Framework installation on your computer can bring a whole set of problems.

Like I had mentioned above, if something were to happen to the .NET Framework like say get damaged, corrupted or missing from your computer, then it would cause your PC to fail to install updates. 

This can also affect how your programs are installed and whether the programs are installed successfully.

You should repair it and re-install this to see if it fixes the error and I’ll show you step-by-step on how you can do that next:

Step 1:  Simply, download the .NET Framework Repair Tool provided by Microsoft and then open it. It will automatically repair any installation issues that it may have.

Step 2:  Next, jump to Microsoft’s .NET Framework download page and then click on the latest version of the .NET Framework available.

Step 3:   The download should automatically begin. Otherwise, click on the Try again button.

Step 4:  Lastly, just open up the downloaded file and then follow the instructions like how you normally would install something on your computer.

 

You can try installing a program once again to see if the error is gone completely. If it has, it’s been fixed and you should not see the error again.

 

Don’t forget to share this post!

 

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