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How to Fix Windows 7 KB4343900 Bugs: Effective Solutions to Common Errors

Windows 7 update KB4343900 has caused several issues for users after installation. These bugs can affect system stability, performance, and even cause unexpected errors. Fortunately, there are effective steps you can take to resolve these problems.

This article will guide you through simple and detailed solutions to fix common errors related to KB4343900. Each step is explained clearly to help you troubleshoot without confusion.

Whether you are a beginner or have some technical experience, the following instructions will assist you in restoring your system’s smooth operation. Let’s get started with some quick checks before diving into fixes.

By following these methods carefully, you can avoid further complications and ensure your Windows 7 system remains secure and functional.

Quick Note Before You Begin

Before attempting any fixes, please ensure the following:

  • Your computer is connected to a stable internet connection – this helps with downloading fixes or updates.
  • You have saved all important documents and closed running applications – some fixes require restarting your PC.
  • You have administrative privileges on your Windows 7 account – this is necessary for applying updates and running system tools.
  • Create a system restore point for safety – this allows you to revert to a previous state if something goes wrong during troubleshooting.

Step 1: Run the Windows Update Troubleshooter

Windows 7 includes a built-in troubleshooter that can automatically detect and fix update-related issues. Running this tool is the simplest way to address KB4343900 errors.

  1. Click the Start button, then open the Control Panel.
  2. Navigate to System and Security > Windows Update.
  3. On the left pane, click Troubleshoot problems.
  4. Select Windows Update from the list and click Run the troubleshooter.
  5. Follow the on-screen instructions to let Windows detect fixes.
  6. Restart your computer once the troubleshooter finishes.

This step helps repair corrupted update files and resets update components, which often resolves common bugs.

Step 2: Manually Uninstall KB4343900 Update

If the update itself is causing serious errors, removing it temporarily can restore system stability.

  1. Open the Control Panel and go to Programs > Programs and Features.
  2. Click on View installed updates on the left side.
  3. Locate the update titled KB4343900 in the list.
  4. Right-click it and select Uninstall.
  5. Follow the prompts and restart your computer.

Uninstalling the problematic update can stop errors immediately. You can then wait for Microsoft to release a fixed version or try alternative solutions.

Step 3: Reset Windows Update Components Manually

Sometimes, the update service’s components get corrupted. Resetting them manually can fix deeper issues preventing KB4343900 from installing or causing errors.

Here’s how to reset update components step-by-step:

  1. Click Start, type cmd in the search box.
  2. Right-click Command Prompt and select Run as administrator.
  3. In the command window, type the following commands one by one, pressing Enter after each:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:WindowsSoftwareDistribution SoftwareDistribution.old
ren C:WindowsSystem32catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

These commands stop update services, rename folders that store update files (forcing Windows to create fresh folders), and restart the services. This process clears corrupted data that could cause bugs.

Step 4: Use System File Checker (SFC) to Repair Corrupted Files

Corrupted system files often cause unexpected errors after updates. The System File Checker tool scans and repairs these files.

  1. Open Command Prompt as administrator as shown in Step 3.
  2. Type the command sfc /scannow and press Enter.
  3. Wait patiently while the scan runs – it may take some time.
  4. If corrupt files are found, Windows will attempt to repair them automatically.
  5. Restart your computer after the process completes.

Running SFC helps fix system file issues that updates like KB4343900 might expose.

Step 5: Manually Download and Install a Fixed Version of KB4343900

If Microsoft has released a revised version of the update, installing it manually can solve bugs caused by the previous release.

  1. Visit the official Microsoft Update Catalog.
  2. Search for KB4343900.
  3. Download the update package suitable for your system architecture (32-bit or 64-bit).
  4. Run the downloaded installer and follow the on-screen instructions.
  5. Restart your PC after installation.

This method bypasses possible download or installation errors that occur through automatic updates.

FAQs

Why does KB4343900 cause errors on Windows 7?

This update includes security and system improvements, but some files or configurations on certain PCs may conflict, resulting in bugs or crashes.

Can I ignore the KB4343900 update?

While skipping updates may avoid immediate bugs, it leaves your system vulnerable to security risks. It’s better to fix issues or uninstall temporarily rather than ignore updates.

Is it safe to uninstall KB4343900?

Yes, uninstalling this update is generally safe and can restore stability. However, only uninstall if you experience serious problems and plan to reinstall a fixed update later.

What if the Windows Update troubleshooter did not fix the problem?

Try resetting update components manually (Step 3) or use the System File Checker (Step 4). These steps address deeper issues that the troubleshooter may miss.

How can I create a system restore point?

Go to Control Panel > System > System Protection, select your drive and click Create. Name the restore point and save it before making changes.

When Nothing Works

If none of the above steps fix the KB4343900 bugs, consider the following options:

  • Contact Microsoft Support: Visit the official support page for assistance.
  • Perform a System Restore: Use a restore point to revert your PC to a state before installing KB4343900.
  • Consider Upgrading: Windows 7 support has ended, so upgrading to a newer Windows version may provide improved stability and security.
  • Seek Professional Help: If you’re uncomfortable with advanced troubleshooting, a certified technician can provide hands-on support.

Conclusion

KB4343900 bugs on Windows 7 can be frustrating, but most problems are fixable by following systematic troubleshooting steps. Starting with simple tools like the Windows Update troubleshooter and progressing to manual resets ensures a smooth process.

Remember to back up your important data and create a restore point before making changes. Whether uninstalling the update or repairing system files, these solutions help maintain your PC’s health.

Staying patient and following the instructions carefully will get your Windows 7 system back to normal operation without unnecessary stress or risk.

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