How to Download the Windows 10 LTSC ISO File in 2026

Windows 10 Home and Pro reached end of support on October 14, 2025. If your hardware cannot run Windows 11, or you need a fixed, predictable environment without constant feature changes, the Long-Term Servicing Channel (LTSC) edition extends Windows 10 support through 2027, or all the way to 2032 on the IoT variant.

This guide covers every legitimate download method for the Windows 10 LTSC ISO in 2026, how to build a bootable USB from the file, how to verify the ISO before you install, and answers to the most common questions about LTSC.

What Is Windows 10 LTSC?

LTSC stands for Long-Term Servicing Channel. Microsoft designed this edition specifically for embedded systems, industrial machines, ATMs, medical equipment, and kiosks. That design goal shapes everything about it.

Windows 10 LTSC ships without the Microsoft Store, Cortana, consumer telemetry apps, or Chromium Edge bundled in. It receives no feature updates that alter the interface or break established workflows. It gets security updates only, delivered consistently over a multi-year support lifecycle.

That makes LTSC a strong choice for IT administrators, privacy-focused users, and anyone running older hardware that cannot meet Windows 11 requirements.

One critical point before you download: LTSC is not a retail product. Microsoft does not list it on the standard Windows 10 download page, and ISO distribution is restricted to specific official channels covered in the methods below.

Windows 10 LTSC Support Timeline

Windows 10 Enterprise LTSC 2021, build 19044, is the latest and final LTSC release for Windows 10. Understanding the support dates helps you pick the right edition before you download anything.

If you need the longest runway, the IoT Enterprise edition reaches 2032. The catch is that Microsoft does not release the IoT ISO without a commercial subscription, so most individual users end up on the standard Enterprise LTSC 2021 build.

How to Download the Windows 10 LTSC ISO (3 Official Methods)

There is no free public download link for Windows 10 Enterprise LTSC on Microsoft’s consumer pages. You get the ISO through one of three verified official channels.

Method 1: Microsoft Evaluation Center (90-Day Free Trial)

The Evaluation Center is the simplest free and legal route for individuals who want to test or run LTSC without a commercial license.

1. Open the Microsoft Evaluation Center in your browser.
2. Search for Windows 10 Enterprise LTSC.
3. Click the download option and select the ISO format.
4. Fill in the short registration form Microsoft requires.
5. Select your language and the 64-bit architecture (recommended for all modern hardware).
6. Start the download and save the ISO file to your computer.

The Evaluation Center provides a fully functional 90-day trial. After that period, you need a valid product key to keep using it. This path requires no upfront license, making it the most common choice for personal use and lab testing.

Important: The 90-day evaluation ISO is the only Windows 10 LTSC version Microsoft makes publicly available without a commercial license. Always download from official sources only. Unofficial copies on forums and file-sharing sites frequently carry malware or fail activation.

Method 2: Microsoft 365 Admin Center (Volume Licensing)

Microsoft retired the Volume Licensing Service Center (VLSC) in 2025. All volume licensing functions now live inside the Microsoft 365 admin center.

1. Sign in to the Microsoft 365 admin center at admin.microsoft.com.
2. Navigate to Billing and open the Volume Licensing section.
3. Go to the Downloads area and filter by product.
4. Locate Windows 10 Enterprise LTSC 2021.
5. Download the ISO file and retrieve your activation keys from the same portal.

US Government customers use separate portals: Government Community Cloud High at portal.office365.us or the Department of Defense portal at portal.apps.mil.

This method delivers the full production ISO along with the product keys your organization owns under its licensing agreement.

Method 3: Visual Studio Subscriptions

Developers with an eligible Visual Studio subscription can pull the LTSC ISO directly through Microsoft’s developer portal.

1. Sign in to your Visual Studio subscription portal.
2. Browse the Downloads library.
3. Search for Windows 10 Enterprise LTSC 2021.
4. Download the ISO file.
5. Note the product keys listed under your subscription benefits.

Both paid Visual Studio tiers and qualifying developer programs include access to LTSC builds. This is a practical option if you already hold a subscription for other development work.

How to Create a Bootable USB From the Windows 10 LTSC ISO

LTSC ISO files do not include the Media Creation Tool, so you need a third-party utility to build bootable installation media. Rufus is the most widely trusted free option for this job.

Before you start: Connect a USB flash drive with at least 8 GB of free space. Back up any files on it first since this process completely erases the drive.

Steps using Rufus:

1. Download the latest version of Rufus from the official Rufus website.
2. Double-click the rufus.4.xx.exe file to launch the tool. No installation is needed.
3. Under Device, select your USB flash drive.
4. Click Select and navigate to your Windows 10 LTSC ISO file, then click Open.
5. Under Image option, choose Standard Windows Installation.
6. Under Partition scheme, select GPT for modern UEFI systems. Select MBR for older BIOS machines.
7. Under Target system, select UEFI (non-CSM) if you chose GPT.
8. Enter a label under Volume label, for example Windows 10 LTSC Setup.
9. Leave File system and Cluster size at their default values.
10. Check Quick format.
11. Check Create extended label and icon files.
12. Click Start, then click OK to confirm and begin the process.

Rufus will build the bootable USB drive. When it finishes, you can boot any compatible system from that drive and run a clean install of Windows 10 LTSC.

Alternative tools: You can also create bootable media using Command Prompt with the DISM tool, or use Ventoy if you want a multi-boot USB that holds multiple ISO files on a single drive.

How to Verify Your LTSC ISO Is Genuine

Verifying the file hash before you install is one step you should never skip. Unofficial ISO copies often carry malware or break during activation. A hash check confirms the file is intact and unmodified.

Steps using PowerShell:

1. Find the official SHA-256 hash for your specific ISO file on the Microsoft Evaluation Center or VLSC download page.
2. Open PowerShell on your computer.
3. Run the following command, replacing the path with your actual ISO file location:

Get-FileHash "C:\path\to\your-ltsc.iso" -Algorithm SHA256

4. Compare the hash value PowerShell returns against the hash Microsoft published for that file.

If the two values match exactly, the ISO is intact and safe to install. If they do not match, delete the file and re-download it from an official channel.

Windows 10 IoT Enterprise LTSC and the 2032 Deadline

Windows 10 IoT Enterprise LTSC 2021 is the version that stretches security support all the way to January 13, 2032. It is the longest-running Windows 10 variant Microsoft offers. The edition targets embedded and industrial hardware where replacing equipment on a standard OS refresh cycle is not practical.

The limitation is access. Microsoft does not offer the IoT ISO through the Evaluation Center. You can only obtain it through the Microsoft 365 admin center under a volume licensing agreement, or through a qualifying licensing partner. If support through 2032 is a firm requirement for your deployment, you need to work through official commercial licensing channels.

Extended Security Updates as an Alternative

If you currently run Windows 10 Home or Pro and want to delay an upgrade decision, the Extended Security Updates (ESU) program is worth considering. Microsoft made the ESU program available beyond its traditional commercial-only scope. Users who sign in with a Microsoft account and back up files to the cloud can access it at no cost. Without those conditions, the extended support carries a $30 fee.

The ESU covers security updates through October 2026, which gives you additional time to evaluate your options rather than jumping straight to LTSC or a Windows 11 upgrade.

Should You Use Windows 10 LTSC or Upgrade to Windows 11?

LTSC makes sense when your hardware cannot meet Windows 11 requirements, when you need a fixed and predictable operating environment, or when your workflow depends on stability over new features.

It is not the right fit for a gaming PC or a daily driver that depends on the Microsoft Store, since LTSC intentionally removes both. The edition also lacks the newer security features Microsoft built into Windows 11, which matters for threat coverage over a long support window.

If your hardware supports the upgrade, moving to Windows 11 is the path Microsoft recommends for most users. Weigh the stability you gain from LTSC against the features and modern security architecture you leave behind before committing.

Frequently Asked Questions

Related Guides

• How to Fix Windows Update Errors on Windows 10 and 11
• How to Use PowerShell to Manage Windows Settings
• How to Fix Windows Activation Errors