Can Raspberry Pi Run Windows 11 ARM? The 2026 WoA Setup & GPIO Guide

The Direct Answer: Windows 11 ARM vs. Legacy IoT

Yes, a Raspberry Pi can run Windows, but with a massive asterisk. You cannot install standard x86/x64 Windows. Instead, you run Windows 11 ARM64 via the community-driven Windows on Raspberry (WoR) project. If you are looking for the old "Windows 10 IoT Core," abandon that path immediately; Microsoft deprecated it, and it lacks the modern UI and .NET 8 support makers actually need in 2026.

Running a full desktop OS on a Pi is no longer a novelty—it is a viable kiosk, digital signage, and edge-computing platform. However, Windows 11 is brutally heavy on storage I/O. Booting from a microSD card will result in a miserable, stuttering experience due to the OS constantly hammering the pagefile. To do this right, you need a Pi 5 with an NVMe drive.

Hardware Compatibility & Performance Matrix

Not every Pi is fit for Windows. Below is the real-world performance data for Windows 11 ARM64 (24H2) across recent board variants. This table assumes you are using the WoR imager and a proper cooling solution.

Project Build: Windows 11 ARM GPIO Controller

For this build, we are targeting the Raspberry Pi 5 (8GB). We will build a .NET 8 C# application that reads a physical button and toggles an LED. This proves that hardware-level GPIO access works natively under Windows 11 ARM64 without relying on legacy IoT Core wrappers.

Parts List

• Compute: Raspberry Pi 5 (8GB variant)
• Storage: WD Blue SN580 256GB NVMe SSD (M.2 2242)
• Case/HAT: Argon ONE V3 M.2 NVMe Case for Pi 5 (includes integrated PCIe HAT and active cooling)
• Power: Official Raspberry Pi 27W USB-C PD Power Supply (Critical: Windows draws more peak current than Raspberry Pi OS)
• Components: 1x 5mm LED, 1x 220Ω resistor, 1x tactile pushbutton, breadboard, jumper wires

Pin Mapping Table

Windows on ARM uses the Broadcom (BCM) logical pin numbering scheme via the System.Device.Gpio library, not the physical board pin numbers.

The Code: .NET 8 GPIO Control with Error Handling

To interact with GPIO on Windows 11 ARM, we use Microsoft's official System.Device.Gpio NuGet package. Create a new .NET 8 Console App and install the package via dotnet add package System.Device.Gpio.

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

namespace PiWindowsGpio
{
    class Program
    {
        // Target: Raspberry Pi 5 (8GB) running Windows 11 ARM64
        // Using BCM Logical Pin Numbering
        const int LedPin = 18;
        const int ButtonPin = 23;

        static void Main(string[] args)
        {
            Console.WriteLine("Initializing GPIO on Windows 11 ARM...");
            
            // Explicitly declare LogicalPinNumbering (BCM) to avoid physical pin confusion
            using GpioController controller = new GpioController(PinNumberingScheme.LogicalPinNumbering);

            try
            {
                controller.OpenPin(LedPin, PinMode.Output);
                controller.OpenPin(ButtonPin, PinMode.InputPullUp);
                Console.WriteLine("Pins opened successfully. Press button to toggle LED. Ctrl+C to exit.");

                bool ledState = false;
                while (true)
                {
                    // Button is pulled UP, so pressing it connects to GND (reads LOW)
                    if (controller.Read(ButtonPin) == PinValue.Low)
                    {
                        ledState = !ledState;
                        controller.Write(LedPin, ledState ? PinValue.High : PinValue.Low);
                        Console.WriteLine($"LED State: {(ledState ? "ON" : "OFF")}");
                        Thread.Sleep(250); // Hardware debounce delay
                    }
                    Thread.Sleep(10);
                }
            }
            catch (PlatformNotSupportedException ex)
            {
                Console.WriteLine($"FATAL PLATFORM ERROR: {ex.Message}");
                Console.WriteLine("Fix: The WoA UEFI GPIO driver is missing or Windows is running in headless Safe Mode.");
            }
            catch (InvalidOperationException ex)
            {
                Console.WriteLine($"FATAL PIN ERROR: {ex.Message}");
                Console.WriteLine("Fix: Pin is reserved by the UEFI firmware or held by a background Windows service.");
            }
            catch (UnauthorizedAccessException ex)
            {
                Console.WriteLine($"FATAL ACCESS ERROR: {ex.Message}");
                Console.WriteLine("Fix: You must run the compiled .exe as Administrator.");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"UNEXPECTED ERROR: {ex.Message}");
            }
            finally
            {
                // Always clean up pins to prevent them from locking in a HIGH state on crash
                if (controller.IsPinOpen(LedPin)) controller.ClosePin(LedPin);
                if (controller.IsPinOpen(ButtonPin)) controller.ClosePin(ButtonPin);
                Console.WriteLine("GPIO pins released. Exiting.");
            }
        }
    }
}

Debugging: First Three Things to Check When GPIO Fails

GPIO on Windows ARM is notoriously fragile compared to Linux. If your code throws an exception, do not rewrite the code. Check these three hardware/OS layers first.

1. The "PlatformNotSupportedException" Driver Failure

Exact Error String: System.PlatformNotSupportedException: GPIO controller is not supported on this OS.

The Cause: Windows 11 ARM does not natively "know" what a Raspberry Pi GPIO header is. It relies on a specific ACPI table injected by the Windows on Raspberry (WoR) UEFI firmware. If you installed Windows via a generic ARM64 ISO without the WoR driver pack, the OS sees no GPIO hardware.

The Fix: Re-image the drive using the official WoR Imager tool, ensuring the "Install UEFI firmware" and "Install drivers" checkboxes are selected. Update to the latest Pi 5 UEFI release from the WoR GitHub repository.

2. The "InvalidOperationException" Pin Reservation

Exact Error String: System.InvalidOperationException: Pin 18 is currently in use.

The Cause: The Pi 5 UEFI firmware reserves certain pins for PCIe negotiation, fan control, or power management. Furthermore, Windows might have assigned the pin to a background telemetry service or a previously crashed instance of your app that didn't release the handle.

The Fix: First, reboot the Pi to clear locked handles. Second, avoid using GPIO 12, 13, 24, and 25 on the Pi 5 under Windows, as the WoA UEFI often maps these to the PCIe HAT and active cooler PWM. Stick to safe pins like 18, 23, and 24.

3. The "UnauthorizedAccessException" Permissions Block

Exact Error String: System.UnauthorizedAccessException: Access to the GPIO pin is denied.

The Cause: Unlike Raspberry Pi OS, where the pi user is in the gpio group, Windows 11 restricts direct hardware memory mapping (which the GPIO driver uses under the hood) to elevated processes.

The Fix: Right-click your compiled .exe or your IDE (Visual Studio / VS Code) and select "Run as Administrator." If deploying as a background service, configure the Windows Service to log on as the Local System account.

Extending or Simplifying the Build

To Simplify: If C# and .NET feel like overkill for a simple relay toggle, you can install Python 3.12 for Windows ARM64. However, be warned: the standard RPi.GPIO Python library does not work on Windows. You must use the gpiozero library with a custom Windows pin factory, or stick to the .NET System.Device.Gpio library, which is vastly more stable on WoA.

To Extend: Turn this Pi 5 into an edge node. Add an MQTT client using the MQTTnet NuGet package. Map the button press to publish a payload to a Home Assistant broker, and subscribe to a topic to control the LED remotely. Because you are running full Windows 11, you can simultaneously run a local SQL Server Express instance to log sensor data, something entirely impossible on standard microcontrollers like the ESP32.