Quick And Smart Ways To Resolve Error 0x80070643

Error 0x80070643 is one of the most well-known errors which you can encounter anytime in your Windows PC. Windows system file damage can be the main culprit for this problem. This issue mainly occurs while updating Windows. Well, if you have already faced the issue and want to know how to eradicate it, then you can follow this article till the end. It consists of guidance to solve the matter on your own. But before going to that part, let’s take a look at the following causes due to which you can encounter this kind of errors with your computer. Next, you need to walk through the solution part.

Probable Reasons of Install Error – 0x80070643:

You might see this error with different error messages such as “Unable to install Windows Update: 0x80070643″ or “Update for Windows 10 Version 1511 for x64-based Systems (KB3122947) – Error 0x80070643“. Due to various reasons, you can confront this kind of errors with your computer. For instance:

• Unable to install the latest system update
• Windows Update feature fails to access certain user data
• Virus or malware infection
• Windows feature requires authentication for an update.
• Failure to install the latest Windows updates, which makes installation of the most recent update(s) impossible.
• Damaged or corrupt system files.
• Installed a third-party antivirus/malware program.
• The operating system failed to install a system update.
• During the Windows Update process, the operating system failed to access certain integral files.
• The computer has been infected with a malicious file.
• Corrupted MSI software update registration or the .NET Framework installation
• Corrupted Microsoft Office Source Engine (Ose.exe)

Few Steps to Fix Install Error-0x80070643 with Ease:

Fixing this issue is relatively simple. So, you can get rid of this issue by using some easy tricks and you do not need technical knowledge to do that. Apply all the hacks one-by-one.

Way 1: Install the latest .NET Framework

The basic solution is that you need to reinstall the Microsoft .NET framework. So, go through the easy steps cited below:

1. First of all, tap and hold the Windows logo key and R button at the same time.
2. Then, navigate the Run dialog box and type ‘Control’ there.
3. Now, press the Enter button and open the Control Panel section.
4. Go to the Programs and Features option.
5. After that, select all items that start with “Microsoft .NET”.
6. Choose Uninstall/Change.
7. Now, follow the on-screen directions to uninstall those items.
8. Lastly, open the .NET Framework website and check if the issue is resolved or not.

Way 2: Run the SFC Scan on your Computer

You can solve this error by running a System file checker scan to check for this issue. You can also repair the corrupted files along with the integrity violations. To run the SFC scan in the system, you have to follow the directions stated below:

1. Firstly, right-click on the Start menu.
2. Go to the Command Prompt section.
3. When the Command Prompt window appears, type ‘sfc/scannow’ and press the Enter key from the keyboard.
4. After that, the SFC scan will scan your device. Don’t cancel the scanning process until it finishes completely. After scanning, it will display the corrupt files of the system. 
5. After scanning, if there are any corrupt files in your device, type the following command:

“findstr /c:”[SR]” %windir%\Logs\CBS\CBS.log >”%userprofile%\Desktop\sfcdetails.txt.”

1. Then, press the Enter key.
2. If you want to skip this, then just type this command,

“Dism /Online /Cleanup-Image /RestoreHealth.”

1. You can find the details of the SFC scan on the sfcdetails.txt file which might appear on the screen. 

Way 3: Install the Updates Manually

If you are still not able to update the Windows version, then you can try to update it manually. To perform that, proceed through these steps carefully:

1. Go to the Search box and type ‘Windows Update’ in it.
2. Next, select the Windows Update settings.
3. Now, select the ‘View update history’ option.
4. Search for a Windows update which previously failed to install.
5. Then, click on this update to see more information. 
6. Now, open the Microsoft download centre.

Way 4: Uninstall the Antivirus Software

Sometimes, antivirus software creates a problem and can result in this Windows error 0x80070643. Therefore, you have to uninstall the antivirus software to check if this is the cause. So, take a look below:

1. At first, click on the Start menu and go to the Settings option.
2. Now, select System.
3. After that, click on the ‘Apps & Features’ option from the left side of the screen.
4. Then, allocate the program which you need to uninstall and click on it.
5. Choose ‘Uninstall’ and wait for a few seconds to complete the process.
6. Lastly, check if the error notification is removed or not.
7. Now, look for the update package which failed before by typing the KB article number.
8. Now, download the package and install this on your PC.

Way 5: Update the Windows Defender Antivirus Manually

Basically, the Windows update error 0x80070643 is related to the Windows Defender antivirus on your device. If the Windows update fails to update it and display this error notification, then you need to update it to fix the error. Therefore, apply the steps in your own way.

1. First of all, go to the Microsoft site.
2. Then, you need to download the update file.
3. After that, open the downloaded file and install it on your device.
4. Now, reboot the system and check if you still face this error or not. If yes, then go through the below solution.

Way 6: Uninstall the Antivirus Software

Sometimes, antivirus software creates a problem and can result in this Windows error 0x80070643. Therefore, you have to uninstall the antivirus software to check if this is the cause. So, take a look below:

1. Firstly, click on the Start menu and go to the Settings option.
2. Now, click on System.
3. After that, select the ‘Apps & Features’ option from the left pane.
4. Then, allocate the program which you need to uninstall and click on it.
5. Choose ‘Uninstall’ and wait for a couple of minutes to complete the process.
6. Finally, check if the error notification is solved or not.

Way 7: Clear the Catroot2 Folder Contents

The CatRoot2 folder is a folder related to the Windows Update. Sometimes, the CatRoot2 folder will make a big issue for Windows update. So, you can delete some contents of CatRoot2 folder which will resolve the Windows Update issue. You have to disable the Cryptographic Service of the CatRoot2 Folder. To disable this, just follow the below methods.

1. Tap on the Windows key and R key together on the keyboard to open the Run box. Now, type ‘Services.msc’, and then press the ENTER key which will open the Service Panel.
2. Then, click on the Cryptographic Services.
3. Next, go to the General tab in the properties of Cryptographic Service. If this service is enabled, just turn-off the Service. If it is disabled already, then ignore it and go to the next step.
4. After that, go to C:\ Windows \ System32 and find the Catroot2 folder. Delete it. You have to remember that, to delete it, you have to set your account as Admin. 
5. Now, come to the Properties window of the Cryptographic Services and restart it.
6. Restart your Device and try to update the Windows again.

Way 8: Update the Device Drivers 

If you use a wrong, corrupt, missing or outdated driver, you encounter the same error. To fix this glitch, you can update the device drivers. You can update the drivers both manually and automatically. 

• Manually Update

If you want to upgrade the driver manually, you need to visit the manufacturer’s website and fetch the latest version of the driver. Make sure that the driver you are installing is compatible with your device. Now, download and install the driver correctly and then restart the device until the process completes. Finally, check if the error is fixed or not. 

• Automatic Driver Update

1. Firstly, run a full scan on your computer to look for problems with the driver.
2. When the window appears, you will receive two options: Update and Update All.
3. You can click on either of them. If you click on the Update option, the driver will download automatically, however, you need to install it manually.
4. Alternatively, you can also select the ‘Update All’ option. Upon choosing this option, both the download and the installation of the driver will be automatic.
5. The process might take a few minutes to finish. When the installation completes, reboot your system and check if the error fixes or not.

• Via Device Manager

Alternatively, you can also upgrade the driver using Device Manager. Follow the steps for a successful upgradation.

1. First of all, you need to click on the Windows key and R at the same time to open the Run dialog box.
2. When the Run dialog box appears on your computer screen, type ‘devmgmt.msc.’ 
3. Hit the Enter key, and then the Device Manager will open.
4. Double-click on the USB controllers option and then click on the ‘USB Composite Device’ option to select the ‘Update Driver Software.’
5. After that, click on the “Search automatically” option which we will search for the latest updates and then update the driver software.
6. When the wizard appears on your computer screen, follow the instructions which appear to complete the process. 
7. When the process completes, reboot your system and check if the error persists or not.

Way 9: Run the Windows Update Troubleshooter

Running the Windows troubleshooter can automatically fix the install error- 0x80070643 related to Windows update. So, you can try this method to fix this Windows error code. To perform this, just follow the easy steps instructed below:

• For Windows 10 Users:

1. First of all, go to the Search box and type Windows Update.
2. Then, select the Windows Update settings.
3. Now, you can find the Troubleshoot option on the left of the screen.
4. After that, choose ‘Windows Update’, and then select ‘Run the troubleshooter’.
5. After clicking this, this option will help to run the troubleshooter automatically.
6. Now, follow the instructions which will appear on the screen to complete this process.
7. Choose the Windows Update again to check if the error is resolved or not.

• For Windows 8 Users:

1. At first, go to the search box and write ‘Network problems’.
2. Then, look for the ‘Identify and repair network problems’ option from the list.
3. Now, follow the steps on the wizard to diagnose and repair the network problems.

Lastly, try to perform the Windows Update again.

• For Windows 7 Users:

1. First of all, go to the notification area and look for the Network icon.
2. Next, click on the ‘Troubleshoot problems’ option.
3. Follow the steps one-by-one which will display on the wizard to diagnose the network problem.
4. Try to perform the Windows update again.

Way 10: Perform a Clean Boot 

To perform a clean boot, follow the steps below. A clean boot will allow you to troubleshoot the error in-depth if it works.

1. Boot into your system and go to the Desktop section.
2. Click on Start.
3. Then, press the Windows and R keys to open the Run utility.
4. Now, type msconfig and press Enter.
5. Go to the General tab, at the System Configuration window.
6. Click Selective startup and uncheck Load startup items.
7. Go to the Services tab and check to Hide all Microsoft services.
8. Click Disable all from the bottom right and go to the Startup tab.
9. After that, turn off all the services listed there by doing: right-click on each and then click on Disable
10. Reboot the device.

Way 11: Restart the Office Source Engine Service

Another way is to restart the Office source engine service by applying these steps mentioned below:

1. First of all, click on Win + R keys together.
2. When the “Run” box appears, type “msc”.
3. Hit Enter and locate the OSE.
4. Double click on the OSE.
5. Then, check the startup status and modify the status to automatic if it is turned off.
6. At last, figure out if the problem still appears or not.

Way 12: Reinstall the Pending Updates

Most of the users reported that the pending updates cause this installation error. So, to reinstall such updates, you have to perform these steps one-by-one.

1. First of all, open the Run box.
2. Now, type ‘update.’ Select ‘Check For Updates’ option.
3. In this option, you will find all the recently installed applications.
4. Go for ‘Uninstalled updates’ option.
5. Find out the pending update applications and update one-by-one. It will help you to get rid of this error.
6. After completing, reboot the Windows and check if the error fixes up or not.

We hope that you will find this article helpful. If you still have any questions regarding this error 0x80070643, then you can leave your feedback in the comment section below.