Windows 10 KB5001716 update fails to install (0x80070643)

Microsoft released a new KB5001716 for Windows 10 that helps keep your device secure and upgrades Windows versions nearing the end of the support cycle. This is a small service package downloads and installs quickly, However, a few users report download error 0x80070643 when installing KB5001716.

Even when I check for updates to install KB5001716, it fails with 0x80070643. The error message states:

There were some problems installing updates, but we’ll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x80070643).

Failed to Install KB5001716 Error 0x80070643

There are several reasons why Windows updates may fail to install, slow internet to corrupted update cache, system file corruption or low storage space are common. But for this particular problem what I found that Windows 10 KB5001716 was already installed on my device on October 2023.

For some reason, Microsoft reissued the update, and devices having already KB5001716 update installed causing conflict. For me uninstall the KB5001716 update from Windows settings and check again for update help resolve the Windows 10 update error 0x80070643.

Uninstall Windows 10 KB5001716

Press the Windows key + I to open the settings app

Go to Apps then Apps & Features, scroll down to locate Update for Windows 10 for x64-based system (KB5001716) select it and then tap on Uninstall option.

Reboot your device, and check for updates again. The update will smoothly install without errors.

Check Internet Connection

A stable internet connection is crucial for downloading Windows updates. If the above solution didn’t help, you need to check and ensure that your internet connection is working correctly.

1. Open a web browser and navigate to a website to check if you can access the internet. Or you can run online speed test tools like speedtest.net or fast.com
2. If you’re unable to access the internet, troubleshoot your network connection by restarting your router, checking cable connections, or contacting your internet service provider for assistance.

Run Windows Update Troubleshooter

The Windows Update troubleshooter automatically detects and fixes common issues that may prevent updates from being installed. It checks for problems such as corrupted update files, misconfigured settings, or issues with the Windows Update service.

1. Press the Windows key and type “Troubleshoot settings,” then press Enter.
2. Click on “Additional troubleshooters,” then locate and click on “Windows Update.”
3. Click “Run the troubleshooter” and follow the on-screen instructions to complete the process.

Restart Windows Update Related Services

Also, you can try Restarting Windows Update-related services to ensure that they are running properly and can resolve issues related to update installation.

1. Press Windows + R to open the Run dialog box.
2. Type services.msc and press Enter to open the Services window.
3. Locate the following services:

• Background Intelligent Transfer Service (BITS)
• Cryptographic Services
• Windows Update

Right-click on each service, one at a time, and select “Restart” from the context menu.

Clear Update Cache

The update cache stores temporary files related to Windows updates. Clearing the cache can resolve issues caused by corrupted or outdated update files.

Press the Windows key + R, and type services.msc and click ok,

Locate “Windows Update,” right-click on it, and select “Stop” to pause the service.

Open File Explorer (Windows + E) and navigate to C:\Windows\SoftwareDistribution/download Select all files and folders there then press Delete to remove them.

Confirm any prompts for administrator permission. Maximize the Services window, right-click on “Windows Update,” and select “Start” to restart the service.