Microsoft Windows 10 Enterprise LTSB 2015 Retail [20 PC]

Windows 10 Enterprise LTSB 2015 — The Original LTSB Build, Engineered for Stability

Windows 10 Enterprise LTSB 2015 is the first Long-Term Servicing Branch release of Windows 10, built on the original 1507 RTM build and released in July 2015. LTSB is the servicing model that Microsoft designed for fixed-purpose devices and specialized systems where stability and predictability matter more than feature currency. LTSB releases do not include the in-box consumer apps and do not receive feature updates — only the monthly security and reliability updates that keep the build protected. Your purchase is delivered as a 25-character Volume License MAK key with secure electronic delivery, full Microsoft Volume Licensing rights for 20 PCs, and 100% genuine Microsoft activation. Every key is sourced directly from Microsoft authorized channels, delivered to your account dashboard within seconds of payment, and backed by a 7-day replacement-or-refund warranty with a real-human support team on hand if activation hits a snag. 🪟 🏢

This listing provides one volume license key that activates up to 20 PCs. The 2015 LTSB follows Microsoft's Fixed Lifecycle Policy with a 10-year support window, ending October 14, 2025. It is the right choice for organizations that have validated the original 1507 build for compliance, certification, or driver-stability reasons and want the longest possible support runway.

What Is Included and How Activation Works

Your purchase delivers one 25-character Microsoft volume license key for Windows 10 Enterprise LTSB 2015. The key activates up to 20 PCs. The license attaches to the hardware on first activation and remains valid for the life of each device, including after clean operating system reinstalls on the same machine.

To activate:

1. Download the official Windows 10 Enterprise LTSB 2015 (build 1507) installation media from the Microsoft Volume Licensing Service Center (VLSC).
2. Install Windows 10 Enterprise LTSB 2015 on each PC and reach the desktop.
3. Open an elevated command prompt and install the product key with slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX.
4. Activate against Microsoft servers with slmgr /ato.
5. Verify activation status with slmgr /dli.

Key Features and Capabilities

• Long-Term Servicing Branch — receives only monthly quality and security updates; no feature updates are ever delivered to this build.
• 10-year support lifecycle — Fixed Lifecycle Policy with mainstream support ending October 13, 2020 and extended support ending October 14, 2025.
• No in-box consumer apps — does not include Microsoft Store, Cortana, Microsoft Edge Legacy, the Xbox app, or the consumer in-box apps that ship with standard Windows 10.
• DirectAccess and Always On VPN — automatic, always-on connectivity to the corporate network for managed devices.
• AppLocker — fine-grained control over which executables, scripts, installers, and packaged apps are allowed to run.
• Credential Guard — virtualization-based security that isolates LSA credentials in a secure kernel.
• Device Guard — hardware-rooted code integrity policies for locking down managed devices.
• BranchCache — peer- and server-side caching to accelerate content delivery across the corporate network.
• BitLocker and Windows Information Protection — full-disk encryption and corporate data separation for managed devices.
• Group Policy and Domain Join — full local and domain-joined Group Policy management, plus Azure AD join for cloud-managed deployments.

What Is Different About LTSB

The LTSB servicing channel is intentionally minimal. You get the Windows 10 Enterprise code base, the kernel, the Win32 subsystem, the management stack, and the security features. You do not get Microsoft Store, Cortana, the legacy Edge browser, the Xbox app, the Mail and Calendar apps, or any of the other consumer in-box apps that ship with standard Windows 10. Microsoft updates LTSB only with the monthly cumulative rollups and out-of-band security fixes — never with feature updates that change behavior. For fixed-purpose devices, this is a feature, not a limitation: the build never changes underneath the application.

Who This Edition Is For

• Regulated industries (medical, industrial, financial) that need a frozen, validated build for compliance reasons.
• Fixed-purpose devices — ATMs, point-of-sale terminals, digital signage, kiosks, and manufacturing equipment.
• Air-gapped or low-bandwidth environments that cannot tolerate the bandwidth of semi-annual feature updates.
• Long-cycle certification programs where the cost of revalidating a new build is prohibitive.
• Organizations standardizing on the original 1507 build for driver stability or application compatibility.

System Requirements

Activation and Licensing Notes

Windows 10 Enterprise LTSB 2015 is licensed through Microsoft Volume Licensing for commercial and government customers. The 20-PC volume key activates each device against Microsoft's hosted activation servers. Each successful activation counts against the 20-activation pool. Once activated, each device remains genuine for the life of the hardware, receiving monthly security updates through Windows Update as long as the build is in support.

Note that LTSB 2015 reaches end of support on October 14, 2025. After that date, no further security updates will be released for this build, and Microsoft Support will no longer be available. Organizations with long-term deployments should plan a migration to a newer LTSC release (LTSB 2016, LTSC 2019, LTSC 2021) or to a supported platform before that date.

Get Started With Windows 10 Enterprise LTSB 2015

Download the LTSB 2015 (build 1507) installation media from the Microsoft Volume Licensing Service Center, image your fixed-purpose devices, and activate each one with the volume key. Twenty activations from a single key — built for the longest possible support window in the Windows 10 Enterprise family.

LTSB 2015 vs LTSB 2016 vs LTSC 2019 vs LTSC 2021

Choosing between the four LTSB/LTSC releases of Windows 10 Enterprise depends on the validation, certification, and support-window requirements of the deployment. The four releases and their support windows are:

• Windows 10 2015 LTSB (build 1507): released July 2015, mainstream support ended October 13, 2020, extended support ends October 14, 2025.
• Windows 10 2016 LTSB (build 1607): released August 2016, mainstream support ended October 12, 2021, extended support ends October 13, 2026.
• Windows 10 Enterprise LTSC 2019 (build 1809): released November 2018, mainstream support ends January 9, 2024, extended support ends January 9, 2029.
• Windows 10 Enterprise LTSC 2021 (build 21H2): released November 2021, mainstream support ends January 12, 2027, no separate extended-support phase.

LTSB 2015 is the right choice when the deployment has been validated against the original 1507 build and the 10-year support runway (ending October 2025) is acceptable. LTSB 2016 adds the Anniversary Update feature set on top of 1507 and extends support by one year. LTSC 2019 is the most widely deployed of the four and the de facto standard for long-horizon LTSC deployments, with a 10-year support runway that extends to January 2029.

Deployment Best Practices for LTSB 2015

Deploying LTSB 2015 on fixed-purpose devices is straightforward: image the device with the LTSB 2015 media, apply the latest cumulative update to bring the build to a known security baseline, install the volume license key with slmgr /ipk, and activate with slmgr /ato. For large fleets, KMS activation against a local KMS host is more efficient than MAK activation; the Generic Volume License Key (GVLK) for LTSB 2015 is documented on Microsoft's KMS client setup keys page.

Common deployment considerations: disable Windows Update automatic restarts in production environments where the device must remain available, configure a maintenance window for cumulative updates, and document the build version and cumulative update level in the device's asset record. For regulated industries, store the validation evidence (driver compatibility matrix, application test results, security baseline compliance report) in a controlled repository and re-validate the build every time a new cumulative update is applied.

LTSB 2015 Specific Build Information

Windows 10 2015 LTSB is the original LTSB release, based on build 1507 (the RTM build of Windows 10). The build number reported by winver is 10240, and the major.minor build string is 10.0.10240.x. The build does not include the Anniversary Update (build 1607) features that LTSB 2016 adds, and it does not include the Windows Ink, Windows Hello for Business, or Conditional Access improvements that came with later Windows 10 feature updates.

LTSB 2015 is most commonly used by organizations that standardized on the original 1507 build for certification or compliance reasons, or that validated their application stack against the original Windows 10 release and want to avoid the cost of re-validating against a newer build. The 10-year support runway ending October 14, 2025 is the longest available among the LTSB/LTSC releases, and for deployments that have already validated against 1507, LTSB 2015 is often the lowest-risk option.

For new deployments in 2025 and beyond, LTSB 2015 is no longer recommended because the support window is about to close. Organizations planning new fixed-purpose deployments should use IoT Enterprise LTSC 2021, which carries a 10-year support runway through 2032 and is the current Microsoft-recommended path for new long-horizon fixed-purpose devices.

Related Products You May Also Consider

Customers comparing Microsoft Windows 10 Enterprise LTSB 2015 Retail [20 PC] often consider these related products before they check out.

• Windows 10 Enterprise
• Windows 10 Enterprise KN
• Windows 10 Enterprise
• Windows 10 Enterprise
• Windows 10 Enterprise

Microsoft Windows 10 Enterprise LTSB 2015 Alternatives

With Windows 10 mainstream support ended in October 2025, three alternatives are worth comparing before you commit to a new licence.

Windows 11

The current mainstream consumer and business release. Required for new hardware, Copilot, and the latest security baselines.

Windows 10 LTSC (IoT)

Long-term servicing branch supported into the late 2020s. Available only through specific licence channels and intended for fixed-purpose devices.

Linux Mint or Ubuntu LTS

Free, stable, and compatible with most productivity software. Best fit for users who can move off Windows-only line-of-business apps.

How to choose: Stay on Windows 10 only if you have a fixed-purpose device and a valid LTSC licence. Move to Windows 11 for the longest support window and current security. Move to Linux if your application stack allows it and you want zero licence cost.

Frequently Asked Questions