Windows Update KB5009543: Everything You Need To Know

Windows Update KB5009543 Everything You Need To Know

The kb5009543 update is a response to a reported vulnerability in Microsoft Outlook that could allow for phishing attacks. This update is for Windows 10 versions 21H1 and 20H2 and addresses an issue with the previous cumulative updates that caused high CPU usage. 

Launched in March,2022, it has improved protection against malicious attachments in email and drive-by download attacks. 

This article focuses on the problems related to kb5009543 update and how you can try to fix them. Read on!

Problems With KB5009543

If you’re running Windows 10, you may have come across problems with installing the latest cumulative update, KB5009543. This update is known to cause many kb5009543 vpn issues including breaking VPN connections for some users.

If you’re having trouble connecting to your VPN after installing the update, make sure that your VPN software is up to date. Older versions may not be compatible with the new update.

If your VPN software is up to date and you’re still having trouble connecting, keep on scrolling. 

How To Fix Windows Update KB5009543?

If you’re experiencing problems with Windows Update kb5009543, there are a few things you can try to fix the issue.

Check for updates again

It’s possible that there is a new update available that will fix the problems you’re experiencing. 

  • To check for updates, open the Settings app and go to Update & Security > Windows Update
  • Click Check for updates and install any that are available.

Perform a clean boot

If you’re still having problems, you can try performing a clean boot. This will start Windows with a minimal set of drivers and programs. 

  • To do this, open the Start menu and type msconfig
  • Press Enter to open the System Configuration utility.
  • Click the Boot tab and check the box next to Safe boot
  • Click OK and restart your PC.

Reset your PC

If you’re still having problems, you may need to reset your PC. This will reinstall Windows and remove all your files, settings, and apps. 

  • To do this, open the Settings app 
  • Go to Update & Security > Recovery
  • Click Reset this PC.

How do I uninstall Windows Update KB5009543?

If you need to uninstall Windows Update KB5009543, you can do so by following these steps:

  1. Open the Control Panel.
  2. Go to Programs > Programs and Features.

3. Click on Uninstall a Program under Programs.

4. Select View installed updates from the left side panel.

5. Find KB5009543 in the list of updates and click on it.

6. Click on the Uninstall button at the top.

7. Follow the prompts to uninstall the update.

8. Restart your computer for the changes to take effect.

How Big Is KB5009543 Windows Update?

If you are wondering, what is kb5009543 size and is it suitable for your OS, then you can check the Windows Update history page. According to the Windows Update history page, the size of the KB5009543 update is around 683.3MB. However, the actual size may vary depending on your computer’s configuration.

Moreover, as it is a large update, some users may experience slower than usual performance while it is being installed.

If you are concerned about the size of this update, you can always check the Windows Update history page to see if there are any smaller updates that you can install instead.

Is Microsoft Fixing KB5009543?

Microsoft has recently released an update to address the KB5009543 bug. This update is currently only available to Windows 10 Insiders, but will be rolled out to all users in the near future. 

Microsoft is also working on a fix for the issue that caused some devices to experience a BSOD after installing KB5009543. 

It is unclear when this fix will be released, but Microsoft is currently working on it and should have it ready soon.

Microsoft is also offering support for users who are experiencing problems with the update. You can contact Microsoft support for help with any issues you may be having.