Can Windows Run on Raspberry Pi? The 2026 WoA & IoT Reality Check

The Direct Answer: Which Windows Actually Runs?

Yes, Windows can run on a Raspberry Pi, but with strict architectural caveats. Standard x86/x64 desktop Windows will never run on Pi hardware. You are limited to Windows on ARM (WoA) builds. In 2026, there are exactly two viable paths: the community-driven WoA Project (which forces a full Windows 11 ARM desktop experience onto the Pi) and Microsoft’s official Windows 11 IoT Enterprise LTSC (designed for headless or kiosk commercial deployments).

The legacy "Windows 10 IoT Core" is officially dead and deprecated. If you are starting a new embedded project today, you must target the 64-bit ARM64 architecture using .NET 8 and Windows 11 IoT Enterprise. Standard desktop Windows 11 ARM via the WoA project is viable for hobbyists but lacks the long-term servicing channel (LTSC) stability required for industrial deployments.

Decision Tree: Pick Your Pi and Windows Variant

Do not guess which setup you need. Use this decision matrix to select the correct OS and board variant based on your actual end-goal.

Hardware BOM and GPIO Pin Mapping

The code and debugging steps below assume the concrete pick: the Raspberry Pi 5 (8GB) running Windows 11 IoT Enterprise. The Pi 5 requires specific power delivery that older Pi 4 USB-C PD chargers cannot provide.

Parts List

• Compute: Raspberry Pi 5 (8GB RAM variant) - Do not use the 4GB for Windows; the OS idle footprint consumes 2.8GB.
• Power: Official Raspberry Pi 27W USB-C PD Power Supply (5.1V / 5A). Third-party 5V/3A chargers will trigger USB current limiting.
• Storage: Raspberry Pi M.2 HAT+ paired with a 128GB NVMe SSD (e.g., WD Blue SN580).
• Thermal: Raspberry Pi Active Cooler (mandatory for Windows background tasks).
• Peripherals: Basic wired USB keyboard (for initial UEFI setup).

Pin Mapping Table (BCM Scheme)

Windows IoT on ARM uses the Broadcom (BCM) logical pin numbering by default in the System.Device.Gpio library, not the physical board pin numbers.

Debugging the dwcotg.sys Boot Failure

When installing Windows on ARM via the WoA Deployer or booting a fresh IoT Enterprise FFU image, the most common catastrophic failure occurs during the USB controller initialization phase.

This BSOD indicates the DesignWare USB controller driver is attempting to access paged memory at an invalid interrupt request level, usually caused by hardware brownouts or ACPI table mismatches in the UEFI firmware.

The First Three Things to Check

1. Measure the 5V Rail Under Load: Use a multimeter on the 5V and GND GPIO pins while the board is attempting to boot. If the voltage drops below 4.8V, the USB controller will brownout and throw the IRQL error. You must use a 5A PD supply; standard 3A phone chargers will fail here.
2. Strip the USB Bus: Unplug every USB device except a basic, unpowered wired keyboard. Powered USB hubs and high-draw wireless dongles frequently back-feed voltage or stall the dwcotg driver during the Windows Plug-and-Play enumeration phase.
3. Update the EDK2 UEFI Firmware: Windows relies on the Pi's UEFI ACPI tables to map the USB controller memory addresses. If you are using an outdated UEFI release (prior to v1.35 for Pi 4, or the initial Pi 5 EDK2 ports), the memory offsets will be wrong. Flash the latest WoA Project UEFI firmware to the SPI EEPROM or the FAT32 boot partition before deploying the Windows FFU.

Compilable C# .NET 8 GPIO Code for Windows IoT

Once you are booted into Windows 11 IoT Enterprise, you interact with the GPIO header using the official System.Device.Gpio NuGet package. The following C# .NET 8 console application targets the Raspberry Pi 5 (and 4), blinks an LED, and reads a button state with proper resource disposal and error handling.

Prerequisite: Install the .NET 8 SDK for ARM64 on the Pi, and add the package via dotnet add package System.Device.Gpio.

using System;
using System.Device.Gpio;
using System.Threading;

namespace PiWindowsIoT
{
    class Program
    {
        // BCM Pin Definitions (Logical Board Scheme)
        const int LED_PIN = 18;    // Physical Pin 12
        const int BUTTON_PIN = 23; // Physical Pin 16

        static void Main(string[] args)
        {
            Console.WriteLine("Windows IoT GPIO Controller Initializing...");
            
            // The default constructor auto-detects the Raspberry Pi ARM driver on Windows
            using GpioController controller = new GpioController();
            
            try
            {
                // Open pins with specific modes
                controller.OpenPin(LED_PIN, PinMode.Output);
                controller.OpenPin(BUTTON_PIN, PinMode.InputPullUp);
                
                Console.WriteLine("Pins opened successfully. Press Ctrl+C to exit.");
                
                // Main polling loop
                while (true)
                {
                    PinValue buttonState = controller.Read(BUTTON_PIN);
                    
                    // Button is active-low because of the InputPullUp configuration
                    bool isPressed = (buttonState == PinValue.Low);
                    
                    controller.Write(LED_PIN, isPressed ? PinValue.High : PinValue.Low);
                    
                    // Sleep to prevent CPU spiking on the ARM core
                    Thread.Sleep(50);
                }
            }
            catch (UnauthorizedAccessException uaEx)
            {
                Console.WriteLine($"Permission Error: Ensure app runs as Administrator. {uaEx.Message}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Unexpected GPIO Error: {ex.Message}");
            }
            finally
            {
                // Explicitly close pins to release hardware locks
                if (controller.IsPinOpen(LED_PIN)) controller.ClosePin(LED_PIN);
                if (controller.IsPinOpen(BUTTON_PIN)) controller.ClosePin(BUTTON_PIN);
                Console.WriteLine("GPIO pins released. Exiting safely.");
            }
        }
    }
}

Extending or Simplifying the Build

A raw Windows 11 desktop environment is bloated for a dedicated embedded sensor node. You have two distinct paths to modify this build based on your deployment needs.

Simplifying: The Kiosk / Headless Shell Replacement

If you want the Pi to boot directly into your C# application without loading the Windows desktop shell (Explorer.exe), you can replace the default shell via the Registry. This saves roughly 800MB of RAM and drastically reduces boot time.

1. Open regedit as Administrator.
2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon.
3. Change the Shell string value from explorer.exe to the absolute path of your compiled executable (e.g., C:\IoTApp\PiWindowsIoT.exe).
4. Reboot. The Pi will now boot directly into your console app. To revert, boot into Safe Mode and change the registry key back.

Extending: Cloud Telemetry via MQTT

To turn this local GPIO reader into an industrial edge node, integrate the MQTTnet NuGet package. Instead of just writing to the console in the while(true) loop, serialize the button state and a timestamp into a JSON payload and publish it to an Azure IoT Hub or local Mosquitto broker. Because you are running full Windows 11 IoT Enterprise, you can also leverage native Windows Defender IoT to secure the TLS certificates used for the MQTT connection, a feature entirely absent in standard Linux-based Raspberry Pi OS deployments.

For official documentation on supported ARM64 drivers and LTSC lifecycle policies, refer to the Microsoft Windows IoT documentation and the Raspberry Pi hardware guides.