Fixing Error Code 0x80070643 During Windows Updates

Having trouble updating Windows? Running into error code 0x80070643? Don’t worry, you’re not the only one. This error means there’s a problem with installing or updating often because of messed up system files or issues with other programs you’ve got installed. Here’s a complete guide to help you fix this problem and get your Windows updates working again.

What Error Code 0x80070643 Means

You might see error code 0x80070643 when:

• Windows Update Fails: Your system runs into a problem when it tries to install updates.
• Microsoft Defender Update Issue: The error might show up when Microsoft Defender is updating pointing to problems with virus definition updates.

How to Fix Error Code 0x80070643

Method 1: Restart Your Computer

A quick restart can often solve temporary Windows Update hiccups. Give your computer a reboot and try to update again to check if the error sticks around.

Method 2: Run Windows Update Troubleshooter

Windows comes with built-in tools to spot and fix common update issues. Here’s how you can use the Windows Update Troubleshooter:

1. Open Settings: Hit the Start button then pick the gear icon for Settings.
2. Go to Update & Security: Click Update & Security then Troubleshoot.
3. Run Troubleshooter: Look for Windows Update, click it then hit Run the troubleshooter.

Do what the screen tells you and let the troubleshooter find and fix any problems it sees.

Method 3: Clear Windows Update Cache

A messed up Windows Update cache can make updates fail too. Cleaning out the cache might solve the problem:

1. Stop Windows Update Service:
2. • Hit Win + R to bring up the Run box.
   • Enter services.msc and hit Enter.
   • Find Windows Update service right-click it, and pick Stop.
2. Get rid of SoftwareDistribution Folder:
3. • Go to C:\Windows\SoftwareDistribution.
   • Trash everything in this folder (you might need admin rights).
3. Get Windows Update Service going again:
4. • Head back to the Services window right-click Windows Update service, and choose Start.

Method 4: Look for Third-Party Antivirus Getting in the Way

Third-party antivirus programs can mess with Windows updates sometimes. Turn off any antivirus software you’ve installed for a bit and try to update Windows again.

Method 5: Do a Clean Boot

A clean boot kicks off Windows with just the basic drivers and startup stuff. This helps get rid of software problems. Here’s how to do a clean boot:

1. Launch System Configuration:
2. • Hit Win + R to get the Run box.
   • Enter msconfig and smash Enter.
   • Once in System Configuration, head to the Services tab.
2. Turn off Non-Microsoft Services:
3. • Tick the box that reads “Hide all Microsoft services.”
   • Hit “Disable all” to shut down all non-Microsoft services.
3. Stop Startup Programs:
4. • Go to the Startup tab.
   • Click to “Open Task Manager.”
   • One by one, switch off all startup items.
4. Reboot Your PC:

• Turn off your computer and start it up again after you’ve stopped the services and startup stuff.
• See if you can get Windows to update now.

Method 6: Update Microsoft Defender by Hand

If you run into trouble when trying to update Microsoft Defender:

Get the Newest Definitions:

Go to the Microsoft Defender Updates website.

Download the most recent virus and spyware definition updates for Microsoft Defender.

Put the Updates in Place:

Open the file you downloaded to install the updates yourself.

Conclusion:

Windows update Error Code 0x80070643 can be frustrating, but with a systematic approach, users can troubleshoot and resolve the issue effectively. At last, if you are still not able to resolve error code 0x80070643 . We recommend you to Chat with our experts. I am sure they will help you resolve this issue. If you like to see the procedure for paid support, to clarify, you may ask the Tech Available online.

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