What Is

What is CheckNetIsolation.exe & How to Use It

Understanding CheckNetIsolation.exe and Its Application in Network Management


As part of Microsoft’s ongoing efforts to provide robust network management tools, CheckNetIsolation.exe emerges as a powerful utility that helps users ensure network isolation and security. Communication and connectivity are integral to our daily lives in today’s interconnected world.

So, network security plays a crucial role in safeguarding our digital experiences. This article will explain the intricacies of this file, exploring its purpose, functionalities, and effective utilization. Check out other essential exe files like BCDEdit.exe and Autochk.exe.

What is CheckNetIsolation.exe?

CheckNetIsolation.exe, developed by Microsoft Corporation, is an executable file that forms a part of the Microsoft Windows operating system. Typically, the Windows version of this software, labeled as 6.3.9600.16384, has a file size of approximately 26,112 bytes.

However, it is worth noting that the size may vary depending on the specific version you have installed. The functions of this executable include the following:

  • Configuring network isolation settings for Universal Windows Platform (UWP) apps.
  •  Enabling or disabling loopback functionality for UWP apps.
  •  Allowing UWP apps to communicate with themselves or others on the same device.
  •  Managing outbound connections for UWP apps.
  •  Specifying and configuring network rules to enable secure outbound connections.
  •  Facilitating seamless communication between UWP apps and external servers or services.
  •  Providing a controlled and secure environment for testing and troubleshooting UWP apps’ network behavior.
  •  Enhancing network security measures by controlling application access to networks.
  •  Simulating diverse network conditions for comprehensive testing of network-dependent features.
  •  Enabling developers and network administrators to optimize network infrastructure and ensure robust security measures for UWP apps.

Note that you can find the file in the C:\\Program Files\\Microsoft Corporation\\Microsoft Windows\\ folder. If you suspect a virus or malware, scan with reputable antimalware software.

How do I enable network loopback with CheckNetIsolation.exe?

  1. Hold the Windows + S keys simultaneously, enter command in the search field.
  2. While holding CTRL and Shift keys down, press ENTER to start Command Prompt as an admin.
  3. When you receive a prompt, click Yes.
  4. Once the Command Prompt window opens, type the following command and press Enter:
    cd C:\Program Files (x86)\Windows Kits\10\App Certification Kit
  5. Then, enter the command below to enable loopback and hit Enter afterward:
    c:\>checknetisolation loopbackexempt -a -n=<package family name>
  6. To ensure that network loopback is enabled for your app, use the following command:
    CheckNetIsolation.exe LoopbackExempt -s
  7. If you want to disable loopback, you can also use the command below and hit Enter:
    c:\>checknetisolation loopbackexempt -d -n=<package family name>
  8. You can find package family name for a UWP in several places.
  9. You can find it in Visual Studio in Package.appxmanifest editor on the packaging tab.
  10. Also view it in PowerShell using get-appxpackage cmdlet displays it, etc. It will look something like MyPackage_edj12ye0wwgwa

In conclusion, CheckNetIsolation.exe, a command-line tool developed by Microsoft, is vital in managing network isolation. It is a valuable tool for developers and network administrators to enhance network security and test applications in controlled network environments.

Understanding the purpose and proper utilization of CheckNetIsolation.exe empowers individuals and organizations to optimize their network infrastructure, ensuring robust security measures and seamless application performance in an increasingly interconnected world.

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Richard Omachona
Richard is a techie in providing fixes and solutions for computer issues of various kinds. Among his contemporaries, he is a preferred choice. His experiences are vast in Windows operating systems, and several other skills in programming such as Python, Web Frontend designing implementing at industry standards, best practices in HTML, CSS and JavaScript. and basics in Web Backend. He also loves traveling, gaming and music.