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What is slui.exe and Is It Safe in Windows PC?

When you are using Windows on your computer, several processes are running in the background. Some are essential system processes that are required by the operating system. At the same time, some are application or program processes of the various programs you have installed on your computer. One particular Windows process that many Windows users are unfamiliar with is the slui.exe process that always runs in the background.

The slui.exe process is responsible for Windows 10 license activation, and it also checks whether a particular license is genuine or not. Like other software programs, Microsoft also uses keys for license activation, and these keys come at a price. Users pay an amount to Microsoft, and in return, they get a genuine version of Windows from Microsoft. This is how Microsoft earns a fair share of its revenue. But what does the slui.exe process has to do with it? Is it a safe process? These are questions that have arrived in the minds of many Windows users, and in this article, we will try to find an answer to both these questions. So without any further ado, let’s get into it.

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What is slui.exe in Windows?

The slui.exe process, also known as the Windows Activation Client process, is responsible for activating Windows 10 licenses. When a user first installs Windows, he/she gets a trial period of 30 days where they can use Windows with all of its features. But after the initial trial days, the user needs to activate Windows using a genuine activation key. Otherwise, the user will lose access to most of the Windows features.

Some Windows users use different means to activate Windows, including cracks and patches, which is not legal and considered piracy. And to block these attempts as much as possible, Windows has the slui.exe process running in the background. It will come into effect when a user tries to activate Windows. And it might even startup randomly at any point to perform checks whether that copy of Windows is genuine or not. If it finds anything wrong with it, it will automatically mark it as a fake copy of Windows, and most of Windows functionality will stop working.

So if you have a genuine version of Windows, you have nothing to worry about the slui.exe process. But if you have used online activating tools or applications to activate your Windows, you might face some issues. Most of these activation tools come with malware, and it might replace the original slui.exe process in your system. This eventually may lead to your system crashing down, which will mean that you will have to reinstall Windows on your computer all over again. You might even lose all your data if you have not backed up all of it.

Is slui.exe a safe Windows process?

The slui.exe process is a part of the Windows operating system, and it takes care of the licensing process of Windows. It is not only a safe process but also an essential one. If someone tries to remove this process or disable it, it will jeopardize the integrity of the operating system, and with the slui.exe process missing from the system, Windows might even block out most of Windows functions. In the end, the user might end up with a deactivated version of Windows, which is just unusable on a daily process.

So just let the slui.exe process do its work and maintain its presence in the background of a Windows system. It is perfectly safe.

Check if your slui.exe process is genuine or not :

System processes are often targeted by malware, and if you are having problems with your Windows activation, you should definitely take a look at the slui.exe process. Often online activation tools also can infect a system by pushing out malware via the slui.exe process. To check the status of the slui.exe process running on your computer, you first need to open up the Task Manager. For that, right-click on the taskbar and select “Task Manager.” Then go to the Details tab and look for slui.exe here. Once you find it, right-click on it and choose “Open file location.”

If this process is legitimate, it will show up a Windows Explorer window with this directory “C:\Windows\System32.” If it opens up any other directory, it is definitely malware infecting the slui.exe process on your Windows computer. Here, you can use any third-party antivirus program to scan your entire computer for malware and clear it out.

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How to use slui.exe to activate the license key or change it?

The slui.exe process becomes active when you try to activate your Windows copy or change the activation key. So if you want to do anything related to Windows activation, you will need to activate this process. And there are two ways to go about it. Firstly you can directly run this process using the Run dialog box. Or you can manually go to the activation section in Windows settings.

To launch slui.exe using Run,

  • Press Windows key + R to open up the Run dialog box.
  • Enter “slui.exe” in the dialog box and click on Ok.

What is slui.exe and Is It Safe in Windows PC?

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  • A new window will now open up asking for a Windows product key.

What is slui.exe and Is It Safe in Windows PC?

  • If you are on a trial version, then enter your product key here. And if you are looking to replace an existing product key, you can do that here too by entering the new product key and then clicking on Next after that.

To launch slui.exe using Windows settings,

  • Press Windows key + X and then select “Settings” from the list of options that show up.
  • In the settings window, choose Update & Security and then click on the Activation tab on the left sidebar of the settings window.
  • Now in the activation window, you will see different options depending on your configuration. If you are on a trial version, you will see the option “Enter a product key.” And if you already have a product key entered here, you will see the “Change product key” option. Click on the one that shows up on your device.

  • Now, a new window will now open up asking for a Windows product key.
  • If you are on a trial version, then enter your product key here. And if you are looking to replace an existing product key, you can do that here too by entering the new product key and then clicking on Next after that.

How to remove slui.exe?

The slui.exe is an essential Windows process that is required by the system for product licensing. Hence it is protected by the system, and without it, the operating system might even stop working altogether. However, if, for some reason, you will want to remove this process from your computer, then follow the steps mentioned below.

The removal of the slui.exe process is dependent on how you installed Windows on your computer. If you used a Windows installer, you would have to go to the apps and features page in Settings and then uninstall it like any other program.

  • Press Windows key + I to open up Windows Settings.
  • Click on Apps.
  • Then click on the Apps and features tab in the left sidebar.
  • Search for the program for slui.exe or the software name Windows-aktiveringsklient in the search bar above the list of installed apps on your computer.
  • Once you find it, click on Uninstall, and it will be removed from your computer.

If you have not used the Windows installer to install Windows, you will have to find the directory where the slui.exe application file is stored. Once you find that file using Windows search, you will also find a uninstall application program for slui.exe with a name similar to “slui.exe_uninstall.exe” in that same directory. Run that application file to uninstall slui.exe from your computer.

Post the uninstallation process, your system might stop working entirely. So if you are going for the removal of the slui.exe file, then be prepared to have a crashed system after that.

So this is all about the slui.exe process in Windows. If you have any questions or queries about this article, then comment down below, and we will get back to you. Also, be sure to check out our other articles on iPhone tips and tricks, Android tips and tricks, PC tips and tricks, and much more for more useful information.

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