KB5012643 Update Installation Problem on Windows 11? [SOLVED]

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1. Start the Windows Update Troubleshooter

Windows 10 includes a built-in troubleshooter to help identify and solve some of the most common issues people encounter while updating their devices. If you’re having trouble downloading software updates, installing apps, or connecting to Wi-Fi networks, it might be worth checking whether there are any errors in Windows Update. You’ll see a list of potential issues, including ones related to network connectivity, device drivers, Windows Store apps, and Windows Defender Antivirus. Click the More button next to each issue to learn how to resolve it.

2. Start every Windows Update service dependency

To ensure that all WU Services are running properly, you must start each service manually. For example, if you want to run the AutomaticUpdates service, you would use the following commands:

1. Open the Command Prompt window.

2. Type “net stop AutomaticUpdates” and hit Enter.

3. Type “net start AutomaticUpdates” and press Enter.

4. Repeat steps 2 and 3 for the remaining Windows Update services.

5. Restart the computer.

6. Check for updates again.

If you still cannot update successfully, please refer to KB5012643.

3. Reset all Windows Update components

Windows 10 is one of the most popular operating systems around today. However, there are still some people out there who don’t know how to use it properly. One way to ensure that everything runs smoothly is to reset every single component in Windows Update. If something goes wrong during the process, you’ll want to try this solution.

The following steps will help you reset every component in Windows Update. You can follow along step-by-step using our guide.

Step #1 – Open Control Panel

Step #2 – Click “Uninstall a Program”

Select “Programs and Features,” then select “Turn windows features on or off.”

Scroll down and find “Windows Update.” Select it and press “Change settings.”

4. Perform DISM or SFC Scans

The Windows 10 April 2018 Update KB5012643 is causing problems for some PCs. Microsoft says it’s working on a solution. In the meantime, you can try one of these steps to resolve the issue.

1. Save the downloaded file to your desktop.

2. Right-click the DISM executable file and select “Run As Administrator.”

3. When prompted, enter the administrator password and press Enter.

4. Select the option to perform a System File Check (SFC).

5. After completing the check, restart your computer.

6. Save the downloaded file on your desktop.

5. Do a Startup Repair

A startup repair will help fix common problems like Windows Update issues, missing drivers, corrupted files, and registry errors. You’ll see a list of possible fixes. Click Next to continue.

(Windows 10) To perform a Startup Repair, open the Start menu and type “recovery”. Then press Enter.

(Windows 8/7) Right-click on the My Computer icon and choose Properties. In the General tab, click the Settings button next to System Protection. If you’re prompted for administrator credentials, enter them now. Under System Restore, click the arrow next to System Restore. On the System Restore window, click Create a restore point. When asked where to save it, click OK. Now click the arrow next to Backup settings. Choose Create a system image backup. When prompted, confirm that you want to create a full disk image. When finished, click Finish. Your computer will restart. After it restarts, you’ll see the option to start the Startup Repair. Click Yes.

(Windows Vista/XP) Open the Start menu and type recovery. Press Enter.

Click Erase. Follow the prompts.

(Linux) Reboot into the Linux Live CD/DVD. For example, my hard drive is sdb1. So I’d replace sdb1 with fsck -fy / dev / sdb1.

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6. You can use System Restore to reinstall the update.

Microsoft rolled out the October 2018 Patch Tuesday security fixes yesterday, including one for the Meltdown vulnerability. While it’s great that Microsoft finally patched the flaw, many people are still experiencing problems with the patch. Some of those issues include crashes, freezes, and even blue screens of death. If you’re having trouble with the patch, try System Restore. You can use System Restore to go back to a specific day or week and revert certain changes to your PC.

To do this, follow these steps:

1. 2. Select Date & Time.

3. Under the Clock tab, select Change date and time options.

4. From the drop down menu, choose Adjust for:

a. By setting the clock forward or backward, you can skip ahead or behind a specific date.

7. Make sure to install the update in Safe Mode.

Microsoft has released a number of security patches over the course of 2018, including one for the Meltdown vulnerability. This patch addresses the issue by updating Intel processors to mitigate the risk of data leakage caused by speculative execution attacks. However, Microsoft warns that some customers are experiencing issues while installing the update. If you encounter problems during the installation, try restarting your PC in Safe Mode with Networking to allow you to download and install the update.

To launch the Safe Mode menu, press Ctrl+Shift+Esc keys together. When prompted, type “bootrec /fixmbr”, hit Enter, and reboot.

If you’re still encountering issues, check out our troubleshooting guide here.

8. Manually install the KB5012643 Windows Update

Windows 10 version 1903 includes several important security fixes, including one that addresses a critical vulnerability in Internet Explorer 11. This vulnerability allows remote code execution if a user opens a specially crafted web site. Users are advised to apply this patch immediately.

The following steps describe how to manually download and install the latest update via Windows Update.

1. Open the Start Menu and type “windows update”. You’ll see the list of available updates.

2. In the left pane, under Optional features, uncheck Automatic updates.

3. Under Recommended updates, check for updates and click OK.

4. A dialog box appears prompting you to restart your device. Click Yes.

9. Hide the KB5012643 Update

Microsoft has released KB5012643, an optional update for Windows 10. If you don’t want to install it, you can simply uncheck the box. You won’t lose anything by doing this, though you might miss out on some features.

The KB5012643 update fixes a critical vulnerability in IE11. If you use the browser, you should check whether you’ve installed KB5012643. If you haven’t, you can download it here.

If you do want to install the update, you’ll find instructions here.

10. Perform a clean or repair installation

A repair install or clean install will depend on how much data you wish to keep. If you’re installing Windows 10 on a computer that already had a previous version installed, a repair install will overwrite everything on your hard disk. This allows you to retain your existing settings and applications without losing anything important. However, it wipes out all of your personal files, including documents, photos, music, videos, etc., and replaces them with factory defaults.

If you’re performing a clean install, you’ll be able to keep your personal files intact. To perform a clean install, follow these steps:

1. Download the ISO file for Windows 10. You can find the link here.

2. Burn the ISO onto a DVD or USB flash drive.

3. Boot into the installer.

4. Click “Repair my PC.”

5. Follow the instructions.

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Frequently Asked Questions

Should I really update my operating system?

Yes! To run programs like Word or Photoshop, your computer needs an operating system (OS). If you don’t update your operating system, your computer will stop working right.

Why do I need to update Windows?

If you don’t run updates on your computer, viruses could be waiting inside your system for a chance to attack. When you update or install new software, your operating system may ask you to download security patches. These patches are made to keep bad code from getting on your computer.