How to Fix Error Code 0x80070643

In this post I will explain the causes, and symptoms, along with step-by-step instructions on how to effectively repair error code 0x80070643; an error that occurs on Windows Update, MSI and Microsoft Security Essentials. In this post I’ll outline repair methods that should ensure the safeguarding of any and all sensitive data on your computer. So if you’ve recently come face to face with error code 0x80070643, then you’ve come to the right place.

Overview

Error code 0x80070643 is basically a generic error, which means it occurs on a number of different software programs, such as Microsoft Security Essentials, Windows Update, Microsoft Office and many others. That said, although these various programs may report the same error code, the causes and solutions tend to vary. So the approach you must adopt will depend greatly on the circumstances you encounter the error in.

Error Causes

Because of the generic nature of error code 0x80070643, there are a number of circumstances that this occur may appear in and equally as many causes. The most common of these causes are the following:

• Registration for MSI software update fails.
• The installation files for the .NET framework have been corrupted.
• The operating system failed to install a system update.
• The registry and/or system files have been corrupted or damaged.
• During the Windows Update process, the operating system failed to access certain integral files.
• The computer has been infected with a malicious file.
• The Microsoft Office Source Engine has been corrupted or disabled.

I guess the only good thing about all of this is that the error doesn’t cause any real damage to your system. That said the inability to update a program or the system can have greater ramifications down the line, so it’s a problem that you’ll want to rectify as soon as possible.

Ramifications of Error

Windows as an operating system is user-friendly, which makes it appealing and easily accessible to millions of people all over the world. Updates is a vital component of this operating system, as it ensures the system is safe from any vulnerabilities that hackers would otherwise choose to exploit. As a solution, Microsoft is constantly releasing new updates and by default, Windows will automatically check and install theses updates where applicable. These updates repair bugs and improve the overall performance of your computer. In addition to that, it’s also possible for you to manually download and install these updates from Microsoft’s official website.

If you are a Microsoft Windows user, then it’s in your best interest to ensure that your operating system is always up-to-date with the latest security patches. However, it should be understood that at times Windows may fail to update and when this occurs, there are a number of error messages that the end user should expect to see. Such as:

Unable to install Windows Update: 0x80070643

This particular error message occurs when there’s a problem with the .NET framework, but as I’ve previously mentioned, this error is not exclusive to just the one problem. With other Windows components, you can expect something similar or at least related.

How to Fix It

When it comes to the solutions, they tend to vary from individual to individual. This error occurs in so many different circumstances, that you’ll need to be cognizant of the fact that you may need to attempt several different solutions before you find something that works for you.

That said, I recommend you attempt as many of them as possible.

Use Reimage

This tool is designed to reinstall your operating system on the fly, without removing, corrupting or destroying the integral of your personal files. During this process it will repair most computer errors, removing malicious files while optimising the performance of your computer.

If you’re a complete novice, then I’d recommend you used Reimage before anything else. Simply because it’s something you’ll be able to do with very little difficult and there is a good chance of it repairing error code 0x80070643.

That said, if using reimage interests you, then I suggest you click on the following link:

CLICK HERE TO CHECK OUT REIMAGE

Note: I recommend the use of Reimage ONLY if error code 0x80070643 occurs when attempting to update the operating system.

Run a Registry Scan

If you use one of the latest operating systems (Windows 8/10), then you may encounter this error when attempting to install a particular Windows Update file. The most effective way of fixing this problem is to enter the registry and to modify certain entries.

However, such a task would require a certain level of expertise that most Windows users simply do not have, this is why I recommend the use of the registry cleaner tool Advanced System Repair Pro instead.

This tool will automatically scan your registry, detect any errors within it and make the necessary changes, all with a single click of a button.

If you would like to use this program, then I recommend you visit the following link:

CLICK HERE TO CHECK OUT ADVANCED SYSTEM REPAIR PRO

The solution(s) below are for ADVANCED level computer users. If you are a beginner to intermediate computer user, I highly recommend you use the automated tool(s) above!

Reinstall Windows .NET Framework

The .NET Framework is an integral component of Windows, used for system updates and software installation. Thus, it’s important that it is installed and properly functioning on your system at all times, as this will ensure that other programs on your computer run as they should.

Thus, I propose the reinstallation of this component, in order to do that, simply do the following:

1. First, make sure you boot into your computer with full administrative rights.

2. Then press + R, type appwiz.cpl and press Enter.

3. Once Uninstall a program loads up, click on Microsoft .Net Framework 4 Client Profile, then click on Uninstall.

4. Once you have successfully removed .NET Framework from you’re computer, you will need to download and reinstall it. You can download this component from the following link: https://www.microsoft.com/net/download

Check System Files

As I previously mentioned, error code 0x80070643 is sometimes caused by the corruption of important system files. In the event that, that is to blame in your case, you will need to locate and reinstall the defective files.

In order to do that, you will have to use System File Checker, which is a built-in Windows tool, designed to repair corrupt system files. In order to use this program, simply do the following:

1. First, boot into your computer with administrative access.

2. Then press + R, type cmd and click on OK.

3. Once Command Prompt loads up, type the following sfc /scannow and press Enter.

Restart Security Center Service

There’s a strong possibility that the security center service which the computer uses to carry out updates has either stopped or is not responding.

In the event that this is the case, you will need to restart it. You can do that by doing the following:

1. First, boot into your computer with administrative privileges.

2. Then press + R, type services.msc and click on OK.

3. Once Services loads up, right click on Security Center and select Restart.

Perform Manual Update

Technically, this isn’t a fix, but it is a solution. If you’re trying to update a very crucial program on your computer, whether it is the security essentials, MSI or even the operating system, but it’s just not working, then I’d suggest a manual update.

In order to carry out a manual update, you will need to visit the official Microsoft website and locate the file(s) from there. A simple search on any of the major Search Engines should get you started.

Use System Restore

If all the methods above fail to fix this error, then you may want to consider performing a system restore. In order for this method to work, system restore must already be enabled on your computer.

System restore is adept at repairing certain error types, but not all. If the error is due to the uninstallation of a program or the manual deletion of a file, then this method will not work.

Anyway, for step by step instructions on how to use this tool, I suggest you check out my post on System restore.

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