In this guide, we are going to tell you how to fix Windows update error 0x80070643.
When a Windows update fails to install, error code 0x80070643 may appear as follows:
- Failed to install on ( date ) – 0x80070643
Error 0x80070643 can also occur when you install or update a Windows application.
Note: The instructions in this article apply to Windows 10, Windows 8, and Windows 7.
Causes of error 0x80070643
The 0x80070643 error message is usually the result of misconfigured system settings, malware or virus infection, driver malfunction, corrupt or missing system files, or older versions of programs that are not working. were not removed correctly when uploading a new version. Error 0x80070643 can also occur when a Windows computer or tablet is improperly shut down or disconnected from a power source while in use.
If you think you have malware on your computer, run your anti-virus software to find and remove it before doing anything else.
How to fix error 0x80070643?
Try these steps in the order listed until the message disappears and the update succeeds:
1. Retry the installation. Sometimes reattempting the install or update will work, so it's worth trying at least one more time before doing any other troubleshooting.
2. Re-download the file. If you downloaded an update or app and it shows error message 0x80070643, the file may have been corrupted during the download process. Download it again to see if that fixes the problem.
Delete the original files you downloaded first so you don't accidentally install those files in place of the new download.
3. Uninstall and reinstall the app. If error 0x80070643 occurs during an app update, the existing version of the app may be corrupted. Use the Windows Uninstaller to remove the program, then reinstall it. The latest version should be installed so you don't need to update it.
To quickly uninstall an app in Windows 10, right-click its name in the Start menu and select Uninstall .
4. Check the Internet connection. If an update requires a connection to an online server, a buggy internet connection can block the installation process. If an internet speed test reveals a weak connection, there are several ways to fix a slow internet connection.
5. Close all other programs. Sometimes running other programs can affect an update or installation by accessing important files and using device resources. Close all open programs on your Windows PC and quit any programs that might be running in the background (like Telegram or Skype).
6. Pause ongoing downloads and updates. Other downloads and updates may interfere with the app you are trying to update. In Windows 10, open the Microsoft Store app and select the ellipses ( … ) in the upper right corner, then choose Downloads and updates . Make sure no other apps are updated or installed, then try the installation again.
7. Restart the computer. A Windows PC restart can fix a variety of Windows issues.
8. Run Windows Update Troubleshooter. The Windows Update Troubleshooter scans and fixes issues associated with operating system and app updates. In Windows 10, go to Settings > Update & Security > Troubleshoot > Windows Update and select Run troubleshooter .
If you see error 0x80070643 while running, installing, or updating relatively old software, run the Program Compatibility Troubleshooter , which is on the same screen than the Windows Update troubleshooter.
9. Install the latest .NET Framework. A corrupt .NET Framework can cause installation and update errors. Make sure that the latest .NET Framework update from Microsoft is installed on the computer.
10. Run .NET Framework Repair Tool. If you have the latest .NET Framework update and still getting error 0x80070643, run the .NET Framework Repair Tool.
11. Disable anti-virus software. Antivirus programs are known to cause conflicts with application installation and system functions. Disable any such software you have installed, then attempt the update or installation again.
Important: Re-enable your antivirus program after completing this task.
12. Perform an SFC scan. An SFC scan can detect and repair corrupt system files on a computer. To run a scan, open the command prompt, type sfc /scannow , then press Enter .
13. Restart the Windows installer. A problem in the Windows installer sometimes generates error 0x80070643. Go to Windows Services and select Windows Installer once to highlight it, then select the Restart link to its left .
Conclusion
If you have any questions or suggestions, let us know in the comments. Also check out this guide if you want to learn How to Install Windows Updates Manually .
