What is included in Microsoft Windows 10 Enterprise LTSC 2021?

Stable Build – Based on Windows 10 version 21H2 build 19044.
Security Updates – Monthly security and quality fixes only, no features.
Enterprise Security – BitLocker, Credential Guard, AppLocker, Application Guard.
Virtualization Ready – Hyper-V, Windows Sandbox, Defender Application Guard included.
Domain Join – Active Directory and Microsoft Entra ID join supported.
Important – Microsoft Store, Cortana, and consumer apps not included.

What are the main benefits of Microsoft Windows 10 Enterprise LTSC 2021?

Windows 10 Enterprise LTSC 2021 is a long-term servicing build of Windows 10 designed for fixed-function devices and workstations that must run unchanged for years. It freezes the feature set at the 21H2 baseline and delivers only security and reliability fixes, so the interface, drivers, and behavior stay predictable across the support window.

Predictable Behavior – No forced feature updates change UI or APIs.
Long Support – Microsoft security updates run until January 2027.
Lean Footprint – No Store apps, Cortana, or telemetry-heavy consumer services.
Full BitLocker – Drive and removable-media encryption for compliance audits.
Remote Desktop Host – Accepts incoming RDP sessions for admin access.
Older Hardware – Runs on machines that do not meet Windows 11 requirements.

End of support for Windows 10 – what your options are
Why LTSC 2021 keeps receiving security updates while most Windows 10 editions reached end of support on October 14, 2025

What does Microsoft Windows 10 Enterprise LTSC 2021 do?

It is the Long-Term Servicing Channel release of Windows 10 Enterprise, built from the version 21H2 codebase and frozen at that feature level. Unlike Windows 10 Pro or standard Enterprise, it never receives semi-annual feature updates – only cumulative security and quality fixes through January 12, 2027. This is the build to deploy on a CNC controller, lab instrument PC, or trading workstation where a surprise UI change after a Tuesday patch is unacceptable.

Who is this edition best suited for?

It is intended for fixed-function and mission-critical desktops: medical imaging stations, point-of-sale terminals, kiosks, industrial control PCs, lab workstations, and engineering machines tied to validated software. A regulated facility that must re-certify any OS change benefits because LTSC 2021 ships no new features for the entire support window, so the validation effort done in 2022 still applies in 2026. It is not the right pick for a daily-driver office laptop that needs Teams, the Microsoft Store, or the newest Edge features out of the box.

How does LTSC 2021 differ from regular Windows 10 Enterprise and Windows 11?

Standard Windows 10 Pro and non-LTSC Enterprise reached end of support on October 14, 2025; LTSC 2021 keeps receiving security updates until January 12, 2027 from the same 19044 codebase. Compared with Windows 11, LTSC 2021 does not require TPM 2.0, Secure Boot, or an 8th-gen-or-newer CPU, which is why it is the practical choice for hardware that fails the Windows 11 compatibility check. The trade-off: no Voice Access, no DirectStorage, no Copilot, and no biannual feature drops.

Does LTSC 2021 include full BitLocker, Hyper-V, and Remote Desktop hosting?

Yes, all three are included. Full BitLocker Drive Encryption protects the OS volume, fixed data drives, and removable media with optional TPM and PIN binding. Hyper-V provides Type-1 client virtualization for running isolated test VMs, and Remote Desktop Services is available in single-session host mode so administrators can connect into the machine using mstsc. This matters when LTSC 2021 sits inside a regulated network where every console session must be encrypted, recorded, and proxied through RDP.

Does LTSC 2021 support Active Directory and Microsoft Entra ID join?

Yes, both local Active Directory domain join and Microsoft Entra ID (formerly Azure AD) join are supported, the same as any other Windows 10 Enterprise edition. Group Policy, AppLocker, Windows Defender Application Control, and Intune MDM enrollment all work normally. The one caveat is that LTSC ignores Windows Update for Business policies – updates are delivered through WSUS or Configuration Manager, not the cloud ring model.

What is missing in this edition that buyers often expect?

The Microsoft Store is not preinstalled, so UWP apps like the Xbox app, Mail, Calendar, Weather, News, and the Your Phone client are not present. Cortana is removed and search is limited to local indexing. New 21H2-plus features such as Voice Access, the Copilot panel, and DirectStorage are not back-ported, and Microsoft 365 Apps for Enterprise (the click-to-run subscription Office) is not supported on LTSC – only the perpetual Office LTSC 2021 SKU is officially aligned with this OS.

Office and Windows compatibility
Table of which Office versions from 2010 to 2024 are supported on each Windows release, including LTSC alignment

What should buyers check before choosing LTSC 2021?

Confirm that every required application runs without the Microsoft Store and without modern WebView2-dependent installers, since LTSC ships no preinstalled browser stack. Verify that the device OEM publishes LTSC-signed drivers for newer peripherals such as Wi-Fi 6E or Thunderbolt 4 controllers – inbox driver coverage stops at the 21H2 hardware envelope. Finally, plan the migration path before the January 12, 2027 cutoff; once that date passes, no further security updates ship for the non-IoT variant, and there is no paid ESU program for LTSC.

Windows 12: speculations and facts
What is known and rumored about the next Windows release, useful for LTSC migration planning toward 2027

Frequently asked questions about Microsoft Windows 10 Enterprise LTSC 2021

Is LTSC 2021 the same as Windows 10 IoT Enterprise LTSC 2021?

The binaries are nearly identical but the support lifecycle is different. Standard Windows 10 Enterprise LTSC 2021 receives security updates until January 12, 2027, while Windows 10 IoT Enterprise LTSC 2021 is supported until January 13, 2032. The IoT SKU is licensed for embedded and fixed-function devices such as ATMs and medical equipment, not general office desktops.

Can the Microsoft Store be added back after installation?

Technically yes, the Store package can be sideloaded through PowerShell, but Microsoft does not test or support this on LTSC. Doing so can interfere with later cumulative updates and defeats the lean, locked-down profile that is the whole point of choosing LTSC.

Does LTSC 2021 require a Microsoft Account for setup?

No. The first-run experience supports a local administrator account directly, with no Microsoft Account prompt loop and no internet requirement for OOBE completion. This is one of the practical reasons LTSC is chosen for air-gapped lab and production networks.

Is it available in 32-bit?

Yes. Windows 10 Enterprise LTSC 2021 is published in both x86 (32-bit) and x64 (64-bit) builds, making it one of the last Microsoft-supported paths for 32-bit-only legacy industrial software that cannot be recompiled.