If your company has purchased an IoT Entrprise license (Entry or Full), this is your only legal source.

certutil -hashfile "C:\path\to\your.iso" SHA1

Before you search for an ISO, you must understand what "Entry" means in this context.

Let’s assume you have a Visual Studio subscription. Here is the exact workflow to get a download.

The Windows 10 IoT Enterprise 2019 LTSC Entry ISO can be downloaded from the Microsoft Volume Licensing Service Center (VLSC) or other authorized sources. To verify the integrity of the ISO file, users can use the following methods:

: Match your result against the official hash values provided by Microsoft. You can often find reference hash values for non-public downloads by checking the "view all" section in the Visual Studio Subscription portal even with a free account. Known ISO File Details (English x64)

Microsoft does not offer this ISO as a free public download. You must have legal entitlement. Below are the only legitimate methods.

While the operating system software is identical across all tiers, Microsoft categorizes licenses based on hardware performance to keep costs proportional to the device.