Hi there,
The iso file isn’t available through standard public download channels, as it’s distributed exclusively to customers and partners with active Volume Licensing, Visual Studio Subscription (MSDN), or OEM agreements.
If your organization has access to the Volume Licensing Service Center (VLSC) or the Visual Studio Subscription portal, you can download the ISO by signing in at https://my.visualstudio.com/downloads or https://www.microsoft.com/licensing/servicecenter. Look for “Windows 10 IoT Enterprise LTSC 2019 (x64)” under the product list.
For OEM or embedded device partners, the ISO can also be obtained via your authorized Microsoft IoT distributor. If you’re unsure who that is, you can find an updated list here: https://aka.ms/iotdistributors.
Please make sure to verify your licensing rights before installation to ensure compliance.
If this helps you locate the ISO successfully, please click “Accept Answer” so others looking for the same information can benefit too 😊.
Jason,