Restart Windows Update Services.
Reboot PC and Retry Update.
Run Windows Update Troubleshooter.
Run .
Reset Windows Update.
Perform a Clean Boot.
Install Updates via Microsoft Update Catalog.
Manually Update Windows Defender.
Install the latest .NET Framework.
Run an SFC scan on your computer.
Install the updates manually.
Update your Windows Defender Antivirus manually.
Disable your antivirus software temporarily.
How to fix the Windows Error code 0x80070643?
– Disable or uninstall Windows antivirus software on your PC.
Solve the problem by deleting unnecessary temporary files from your Windows.
– Disable fast startup from your PC windows.
Restore your computer after Windows Startup Cleanup –.
– Update the Windows drivers associated with your PC.
– Uninstall and reinstall Microsoft .NET Framework on your PC.
How to fix 0x80070643 error?
How to fix Windows Update error 0x80070643 Download .NET Framework. The Microsoft .NET Framework is an excellent and essential component that allows Microsoft Windows applications to run on Windows.
Scan for malware. If your computer was recently started and you notice another drop in performance, a malware infection could be the root cause.
Run an SFC scan.
Restart Windows Installer.
How to fix Windows Defender error ox800706bb?
Use the Add/Remove Programs utility to block Windows Defender.
Download the Windows Installer Cleanup utility from the Microsoft website.
Install and run the program on the system.
Select Windows Defender from this displayed list and clear the installer’s Windows configuration information.
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How do I fix Windows Update error code 0x80070643?
1) Fix 0x80070643 Windows cannot update
- Install the latest version of the .NET Framework.
- Run an SFC scan on your computer.
- Install updates manually.
- Update Windows Defender Antivirus Manual.
- Temporarily disable your antivirus.
How do I fix error 0x80070643 in Windows 11?
How to fix error type 0x80070643 in Windows 11?
- Run the Windows Update troubleshooter. …
- Run the system overflow file. .… .
- Install .latest .. …
- Repair . …
- Temporarily disable third-party antivirus software. … Change the
- name of the SoftwareDistribution subfolder.
- Reset… folder type Catroot2. …
- Update Windows Signature Defender.
How do I fix 0x80070643 Fatal error during installation?
How to fix 0x80070643
- Try again, installation errors.
- Upload the folder again.
- Uninstall and reinstall the app.
- Test your Internet connection as usual.
- Close all other programs.
- Pause the current download and take a look.
- Restart your computer.
- Run the Windows Update troubleshooter.

Vijay is a tech writer with years of experience in the Windows world. He’s seen it all – from simple problems to catastrophic system failures. He loves nothing more than helping people fix their PCs, and he’s always happy to share his wisdom with anyone who needs it.
When Vijay isn’t fixing Windows problems, he likes to spend time with his wife and two young children. He also enjoys reading, playing cricket, and watching Bollywood movies.