The Windows update error code 0x80070643 is a common issue that may occur when the user tries to update the Windows system or install a program. This Windows error code will occur due to a corrupted database, .NET framework issue, system file missing issue, etc. The 0x80070643 error will also happen when a Windows computer is incorrectly shut down or unplugged the power cord while in use. By following the below instructions, you can Fix Windows Update Error 0x80070643
Check The Connection:
Step 1:Make sure that your computer is connected to the network.
Step 2:If it is not connected, connect your computer to a standard network.
Step 3:Make sure the internet speed is high and it is stable.
Step 4:If the internet speed is low, the connection problem will occur while updating Windows.
Step 5:If the error continues, restart your computer.
Step 6:Select the Start menu and click on the Power option.
Step 7:Choose the Restart option from the menu.
Step 8:When the computer turns on, try to update Windows.
Run An Sfc Scan:
Step 1:Select the Start menu on your computer and type cmd in the search box.
Step 2:Right-click on the Command Prompt option from the search result and select the Run as administrator option.
Step 3:Now, enter sfc /scannow in the command prompt dialog box and press the Enter key on the keyboard.
Step 4:You must wait for some time to complete the scanning process.
Step 5:Now, your computer will restart automatically after finishing the scan.
Step 6:If the computer does not restart, then you should restart it.
Step 7:When the computer turns on, you can try to update Windows.
Install Latest .net Framework:
Step 1:Open the browser on your computer.
Step 2:Go to the official Microsoft’s .NET Framework website.
Step 3:Select the latest version of the .NET Framework to download.
Step 4:Click on the Download button.
Step 5:Once completing the download, open the .NET Framework file to install.
Step 6:After finishing the installation process, try to update Windows.
Run Windows Update Troubleshooter:
Step 1:Click on the Start button on your computer.
Step 2:Select the Settings option.
Step 3:Now, choose the Update & Security option from the Settings window.
Step 4:Now, select the Troubleshoot option from the left menu pane on the screen.
Step 5:Next, choose the Windows Update option at the top of the window.
Step 6:Now, click on the Run Troubleshooter button.
By following the above instructions, you can Fix Windows Update Error 0x80070643.