Alex Ruben
How to Fix Visual C++ Installation Error 0x80070666 in Windows
This guide will help you resolve the Visual C++ installation error 0x80070666 on your Windows computer. By following these steps, you will not only understand the cause of this error but also learn how to effectively troubleshoot and resolve it using Microsoft’s Fix-It Tool.
Step 1: Download the Fix-It Tool
To begin solving the Visual C++ installation error, you first need to download the Fix-It Tool provided by Microsoft. This tool is designed to fix problems that block programs from being installed or removed on your system.
- Visit the official Microsoft support page: Microsoft Fix-It Tool.
- Click on the download link for the Fix-It Tool and save the file to your computer.
Step 2: Run the Fix-It Tool
Once the Fix-It Tool is downloaded, follow these steps to run it and attempt to fix the C++ installation error:
- Locate the downloaded Fix-It Tool file on your computer.
- Double-click on the file to open it.
- Follow the on-screen instructions provided by the tool to diagnose and fix any installation problems.
Step 3: Restart Your Computer
After running the Fix-It Tool, it’s important to restart your computer to ensure that all changes are applied correctly.
Step 4: Attempt to Reinstall Visual C++
Now that you have run the Fix-It Tool and restarted your computer, try reinstalling Visual C++. Here’s how:
- Go to the official Microsoft website and download the latest version of Visual C++.
- Double-click the downloaded installer and follow the prompts to complete the installation.
Step 5: Check for Windows Updates
If you are still encountering errors, check for any pending Windows updates that may resolve system compatibility issues:
- Press Win + I to open the Settings menu.
- Click on “Update & Security” and then select “Windows Update”.
- Click “Check for updates” and install any available updates.
Step 6: Reboot and Retry Installation
After the updates are installed, reboot your computer once again and try to install Visual C++ again.
Extra Tips & Common Issues
During this process, you might run into some common problems. Here are some tips to help you troubleshoot them:
- Ensure that no other installations are running in the background, as they may block the Visual C++ setup.
- If you continue to experience issues, consider checking the system for corrupted files using the command
sfc /scannowin the Command Prompt.
Always ensure that your system is backed up before making any significant changes.
Conclusion
By following these steps, you should be able to fix the Visual C++ installation error 0x80070666. If problems persist, consider seeking additional support or visiting forums dedicated to Windows troubleshooting. For more guides, check out our other articles about Windows installation issues.
