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What is SLUI 4 and Why is it Not Working on Windows 10?

SLUI 4 is a command line utility that allows you to activate Windows 10 by phone, without having to enter the product key. This can be useful if you have an invalid or blocked license key, or if you have recently changed your hardware and need to reactivate Windows. However, sometimes SLUI 4 may not work due to various reasons, such as corrupted system files, unstable internet connection, or damaged hard drive.

In this article, we will explain what SLUI 4 is, how it works, and how to fix it if it is not working on Windows 10. Follow the steps below and see which one works for you.

How does SLUI 4 work?

SLUI 4 stands for Software Licensing User Interface 4. It is one of the commands that you can use to manage your Microsoft product keys. It can be used to activate, validate, and troubleshoot Windows 10. To use SLUI 4, you need to have an internet connection and a phone.

When you run SLUI 4, it will ask you to select your region and provide you with a toll-free number to call. You will also see a nine-digit installation ID on your screen. You need to call the number and enter the installation ID when prompted by the automated system. The system will then give you a confirmation ID, which you need to enter on your computer and click Activate Windows.

This process will verify that your copy of Windows 10 is genuine and activate it on your device. You can also use SLUI 4 to check the activation status of your Windows 10.

How to fix SLUI 4 not working on Windows 10?

If SLUI 4 is not working on Windows 10, it may be due to one of the following reasons:

Your product key is invalid or has been blocked by Microsoft. This can happen if you have purchased a counterfeit or stolen product key, or if you have used the same product key on multiple devices.
Your internet connection is unstable or not working. This can prevent SLUI 4 from connecting to the Microsoft servers and verifying your product key.
Your system files are corrupted or damaged. This can affect the functionality of SLUI 4 and cause errors or crashes.
Your hard drive is failing or has bad sectors. This can cause data loss and prevent SLUI 4 from accessing the necessary files.
Your Windows 10 is not up to date. This can cause compatibility issues and bugs with SLUI 4.

To fix SLUI 4 not working on Windows 10, you can try the following solutions:

1. Enter the OEM license

If you have an OEM license, which means that your Windows 10 came pre-installed on your computer, you may need to enter the original product key to activate it. To do this, follow these steps:

Press the Windows key and type cmd in the search bar.
Select Run as administrator from the right pane.
Type and enter the following command to find your original product key: wmic path SoftwareLicensingService get OA3xOriginalProductKey
Copy the product key and go back to Settings > Update & Security > Activation.
Click on Change product key and paste the product key.
Click on Next and follow the instructions to activate Windows.

2. Run DISM and SFC scans

If your system files are corrupted or damaged, you can run two built-in tools that can repair them and restore your Windows integrity. These tools are DISM (Deployment Image Servicing and Management) and SFC (System File Checker). To run them, follow these steps:

Press the Windows key and type cmd in the search bar.
Select Run as administrator from the right pane.
Type and enter the following command to run DISM: DISM /Online /Cleanup-Image /RestoreHealth
Wait for the process to complete. It may take some time, so be patient.
Type and enter the following command to run SFC: sfc /scannow
Wait for the process to complete. It will scan and repair any corrupted or missing system files.
Restart your computer and try to activate Windows again.

3. Use the automated telephone system

If none of the above methods work, you can try to activate Windows by using the automated telephone system. This is a last resort option that may help you if SLUI 4 is not working on Windows 10. To do this, follow these steps:

Press Windows + R to open the Run window.
Type slui 4 and hit Enter.
In the Select your region window, select the country and click Next.
Call one of the numbers displayed on the screen to get a Confirmation ID.
Once you get the confirmation ID, enter it and click Activate Windows.

4. Check your internet connection

If your internet connection is unstable or not working, it may prevent SLUI 4 from connecting to the Microsoft servers and verifying your product key. To fix this, you can try the following steps:

Restart your router or modem and wait for a few minutes.
Check if your firewall or antivirus software is blocking SLUI 4 or Windows activation.
Disable any VPN or proxy services that may interfere with your connection.
Run the network troubleshooter by going to Settings > Network & Internet > Status > Network troubleshooter.
Update your network drivers by going to Device Manager > Network adapters > Right-click on your adapter > Update driver.
Try using a different internet connection, such as a mobile hotspot or a wired connection.

5. Update your Windows 10

If your Windows 10 is not up to date, it may cause compatibility issues and bugs with SLUI 4. To fix this, you can update your Windows 10 to the latest version by following these steps:

Go to Settings > Update & Security > Windows Update.
Click on Check for updates and wait for Windows to download and install any available updates.
Restart your computer and try to activate Windows again.

6. Contact Microsoft support

If none of the above solutions work, you may need to contact Microsoft support and ask for their assistance. They may be able to help you activate your Windows 10 or provide you with a new product key. To contact Microsoft support, follow these steps:

Go to https://support.microsoft.com/en-us/contactus/.
Select Windows 10 as the product you need help with.
Select Activation as the issue you are facing.
Select Get help from a person as the way you want to get help.
Choose between Chat online with a Microsoft Answer Tech or Schedule a call from a Microsoft Answer Tech.
Follow the instructions to connect with a support agent and explain your problem.

What are the benefits of activating Windows 10?

Activating Windows 10 is important for several reasons. First, it ensures that your copy of Windows 10 is genuine and not pirated or counterfeit. This means that you can enjoy the full features and security of Windows 10 without any limitations or risks. Second, it allows you to receive updates and support from Microsoft, which can improve your performance and protect your device from malware and viruses. Third, it enables you to personalize your Windows 10 experience by changing your wallpaper, theme, colors, and other settings.

Therefore, if you encounter any problems with SLUI 4 or Windows activation, you should try to fix them as soon as possible. Otherwise, you may face some consequences, such as:

A watermark on the lower right corner of your screen that says Activate Windows.
A notification that pops up every few hours that reminds you to activate Windows.
A loss of access to some features and settings, such as personalization, Microsoft Store, and Microsoft account.
A reduced functionality mode that limits your actions and options.

How to prevent SLUI 4 from not working on Windows 10?

While there is no guarantee that SLUI 4 will always work on Windows 10, there are some steps that you can take to prevent it from not working in the future. These steps include:

Purchasing a valid and genuine product key from a reputable source. Avoid buying cheap or suspicious product keys from unknown sellers or websites.
Keeping your Windows 10 up to date with the latest updates and patches. This can fix any bugs or issues that may affect SLUI 4 or Windows activation.
Maintaining a stable and secure internet connection. This can ensure that SLUI 4 can connect to the Microsoft servers and verify your product key.
Backing up your system files and data regularly. This can help you restore your Windows 10 in case of any corruption or damage.
Avoiding making significant hardware changes to your device. This can trigger a reactivation of your Windows 10 and cause problems with SLUI 4.

How to use SLUI 4 to activate other versions of Windows?

SLUI 4 is not only available for Windows 10, but also for other versions of Windows, such as Windows 8.1, Windows 8, Windows 7, and Windows Vista. The process of using SLUI 4 to activate these versions of Windows is similar to Windows 10, with some minor differences. Here are the steps to use SLUI 4 to activate other versions of Windows:

Press Windows + R to open the Run window.
Type slui 4 and hit Enter.
Select your region and click Next.
Call the toll-free number displayed on the screen and follow the instructions from the automated system.
Enter the installation ID and get the confirmation ID.
Enter the confirmation ID and click Activate Windows.

Note that some versions of Windows may require you to enter a product key before using SLUI 4. You can find your product key on a sticker on your device or on the packaging of your Windows disc. You can also use the command wmic path SoftwareLicensingService get OA3xOriginalProductKey to find your product key if you have an OEM license.

Conclusion

SLUI 4 is a useful tool that can help you activate Windows 10 by phone, without having to enter the product key. However, sometimes it may not work due to various reasons, such as hardware changes, invalid license key, unstable internet connection, or damaged hard drive. In this article, we have shown you how to fix SLUI 4 not working on Windows 10 and activate your Windows successfully. We have also explained what SLUI 4 is, how it works, and how to use it for other versions of Windows. We hope that this article has been helpful and informative for you. If you have any questions or comments, please feel free to leave them below.