What Is Windows on ARM?
Windows on ARM (WoA) is a version of Microsoft Windows designed to run on processors built on the ARM architecture — as opposed to the traditional x86/x64 architecture used by Intel and AMD chips. ARM processors power most modern smartphones and tablets, and are now making serious inroads into the PC market through Qualcomm's Snapdragon X series of chips.
Devices like the Microsoft Surface Pro (ARM), Lenovo ThinkPad T14s (Snapdragon X), Samsung Galaxy Book4 Edge, and many others run Windows on ARM natively.
How Is WoA Different from Regular Windows?
At first glance, Windows on ARM looks and feels identical to Windows on an Intel machine. But under the hood, there are important differences:
- Native ARM64 apps run with full performance and efficiency directly on the processor
- x64 and x86 apps run through an emulation layer called Prism, which translates instructions on-the-fly
- Battery life is typically much longer due to ARM's energy-efficient architecture
- Always Connected PCs — many ARM devices include integrated 5G or LTE modems
- Instant On — ARM devices often wake from sleep in under a second
ARM Emulation: What You Need to Know
One of the most common questions about WoA is: "Will my apps work?" The short answer for most users is yes. Here's the breakdown:
| App Type | Compatibility | Performance |
|---|---|---|
| ARM64 native apps | Full | Excellent |
| ARM64EC apps | Full | Excellent |
| x64 apps (emulated) | Very good | Good |
| x86 (32-bit) apps | Good | Moderate |
| 16-bit apps | Not supported | N/A |
| Kernel-mode drivers (x64) | Limited | Varies |
Major applications like Microsoft Office, Google Chrome, Firefox, Spotify, and Adobe Creative Cloud all have native ARM64 builds or work well under emulation.
Setting Up Your Windows on ARM Device
Step 1: Initial Setup
The initial Windows setup (OOBE) on WoA devices is identical to standard Windows 11. Follow the on-screen prompts to connect to Wi-Fi, sign in with your Microsoft account, and configure your preferences.
Step 2: Check for Updates Immediately
After setup, go to Settings → Windows Update and install all available updates, including firmware (FOTA) updates. Early firmware updates often contain critical fixes for stability and performance.
Step 3: Install ARM-Native Apps Where Possible
When downloading apps, check if an ARM64 version is available. Many apps now offer ARM-native builds on their official download pages. The Microsoft Store automatically serves ARM64 versions when available.
Step 4: Configure Power Settings
ARM devices have unique power profiles. Navigate to Settings → System → Power and explore the available power modes. Many Snapdragon WoA devices offer an "Efficiency" mode that dramatically extends battery life for light workloads.
Common Limitations to Be Aware Of
- Virtualization: Running x64 VMs on WoA has limitations — Hyper-V supports ARM64 guests natively, but x64 guest VMs are not officially supported on all configurations
- Older drivers: Some niche peripherals (older scanners, specialised hardware dongles) may lack ARM64 drivers
- Anti-cheat software: Many PC games use kernel-level anti-cheat tools that don't yet support ARM — check game compatibility before purchasing
- 32-bit-only apps: Pure 32-bit applications run through emulation with a noticeable performance penalty
Is Windows on ARM Right for You?
WoA is an excellent choice for:
- Students and professionals who need long battery life
- Users who primarily use mainstream productivity apps and web browsers
- Anyone who wants an always-connected PC with integrated LTE/5G
- Developers targeting ARM64 platforms
It may not be ideal if you rely heavily on niche hardware peripherals, kernel-level software, or the very latest PC games with kernel anti-cheat systems.