Which Windows 11? 26H2, 25H2, LTSC 2024 and ARM64
Compare Windows 11 26H2, 25H2, LTSC 2024 and ARM64 by support window, hardware, licensing and use case, then pick one.
- Build
- 26300.9457
- Edition
- Pro (26H2) / LTSC 2024
- Architecture
- x64
- Support
- Lab (26H2 + LTSC)
- Evidence
- E2Reproduced in the lab
- Verified
- 2026-10-28
- Test machine
- PVE 9.2.2 VM 361 (26H2 Pro) + VM 360 (LTSC 2024); 8GB/4 vCPU each; vTPM 2.0 + Secure Boot
- Page type
- Concept
The short answer
Section titled “The short answer”- Most people installing a current PC: Windows 11 26H2. It is the current GA release (build 26300), supported to 2028-10-10 on Home/Pro and 2029-10-09 on Enterprise/Education.
- A PC that must not change for years: Windows 11 LTSC 2024 (build 26100, support to 2029-10-09). It is not a “faster Windows”; it is a fixed-purpose release with a different licensing channel.
- Still on 25H2: supported until 2027-10-12 (Home/Pro) and 2028-10-10 (Enterprise). Move when your drivers and games are known-good on 26H2, not on day one.
- Snapdragon X / ARM laptop: Windows 11 ARM64. Same release cadence, different driver model, and x64 apps run through Prism.
Decision table
Section titled “Decision table”| You have | Pick | Why | Watch out |
|---|---|---|---|
| Current x86 laptop or desktop | 26H2 Home/Pro | Current GA, longest consumer support | Fresh release: check GPU/audio drivers and anti-cheat |
| Managed or mission-critical workstation | 26H2 Enterprise, or LTSC 2024 | Enterprise support to 2029; LTSC stays fixed | LTSC needs the right volume licensing channel |
| Snapdragon X device | 26H2 ARM64 | Native ARM64 build, Prism for x64 apps | Kernel drivers and some anti-cheat titles are still x64-only |
| Old PC below TPM 2.0 / Secure Boot | Stay on a supported build or replace | 26H2 keeps the same hardware floor | Do not follow “bypass” scripts; you lose the support path |
| Windows 10 today | Plan a move | Windows 10 support ended 2025-10-14; consumer ESU now runs to 2027-10-12 | Check CPU/TPM before buying a licence |
26H2 vs 25H2: what actually changes for a reader
Section titled “26H2 vs 25H2: what actually changes for a reader”- Build number: 26300.x vs 26200.x. Every page on this site records the build it was verified on.
- Support window: 26H2 adds roughly one year over 25H2 on the same edition.
- Driver baseline: vendors ship 26H2 packages after launch; a 25H2 driver may install but is not the tested combination.
- Known issues: 26H2 has its own list (black screen after sign-in, RDP
0xC000000Dfor non-admin users, AC-3 audio apps, domain trust). Check it before blaming your hardware.
LTSC 2024 is not “Windows without bloat”
Section titled “LTSC 2024 is not “Windows without bloat””LTSC removes features on a fixed cadence and is licensed through volume channels. It is a good fit for kiosks, lab machines and appliances; it is a poor fit for a gaming laptop that needs the latest GPU stack and Store apps. We explain the boundary; we do not distribute images or keys.
ARM64: the compatibility layer is good, not universal
Section titled “ARM64: the compatibility layer is good, not universal”Prism runs x64 applications, including AVX/AVX2 paths, on Snapdragon X. That covers most browsers, Office and many games. It does not make x64 kernel drivers work: anti-cheat, some VPN clients and specialized hardware tools can still refuse to run. Check the vendor page before buying an ARM laptop for a specific game or device.
Lab check: 26H2 and LTSC 2024 (E2)
Section titled “Lab check: 26H2 and LTSC 2024 (E2)”26H2 Pro (VM 361)
Section titled “26H2 Pro (VM 361)”| Item | Observed |
|---|---|
| Edition | Windows 11 Pro (Professional) |
| Display version | 26H2 |
| Build | 26300.9457 (UBR 0x24f1) |
| Architecture | x64 |
| Firmware | UEFI, Secure Boot On |
| TPM | 2.0, “ready for use” (IBM vTPM) |
| Install date | 2026-10-28 |
| Processor | QEMU Virtual CPU, 4 vCPU |
| Locale | en-US |
msinfo32 reports “Microsoft Windows 11 Pro”, version 10.0.26300 Build 26300. The registry ProductName still reads “Windows 10 Pro” — a branding string in the 26H2 image, not a Windows 10 build. The ISO was Windows11_Client_x64_en-us_26300_9457.iso, SHA-256 BD4307…A650.
LTSC 2024 (VM 360)
Section titled “LTSC 2024 (VM 360)”| Item | Observed |
|---|---|
| Edition | Enterprise LTSC 2024 (EnterpriseS) |
| Display version | 24H2 |
| Build | 26100.1742 |
| Architecture | x64 |
| Firmware | OVMF, Secure Boot on |
| TPM | 2.0, ready |
| Install date | 2026-09-01 |
| Hotfixes | KB5043113, KB5043080, KB5042098 (2024-09-06) |
| Activation | LicenseStatus 5, grace 0 — the lab ISO is not activated |
The registry ProductName still reads “Windows 10 Enterprise LTSC 2024”; that is the branding string in the LTSC 2024 image, not a Windows 10 build.
Not verified: 25H2, ARM64, activation, and upgrade paths. Do not read this table as “LTSC is activated” or “26H2 is licensed”.
What this page does not decide
Section titled “What this page does not decide”- Whether your specific laptop is supported: check the OEM page and the Windows 11 requirements.
- Whether a game runs on ARM: check the game’s anti-cheat and the vendor’s ARM statement.
- Whether you should upgrade today: if 25H2 is working and 26H2 drivers are not listed for your GPU, wait.