WinDroidFS bypasses the traditionally unstable Windows Media Transfer Protocol (MTP) by using the Android Open Accessory (AOA) protocol. It establishes a high-speed, raw binary pipe between your PC and your phone, treating your Android device like a standard local flash drive.
Official builds are only published on this repository's Releases page. I can't guarantee the security of builds from anywhere else, including modified copies of this project.
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WinDroidFS is built as a Turborepo-powered monorepo consisting of 3 components:
- WindroidFS for Windows (Rust, runs as a service): A high-performance systems daemon that scans the USB bus, initiates the AOA hardware handshake, and mounts the incoming byte stream as a native Windows virtual drive.
- Android Host (Kotlin, with support for Android >= 7.0): A native Android application that receives the raw USB accessory intent, reads the local file system, and pipelines data directly to the PC.
- Binary Protocol (Protobuf): A typed, language-agnostic schema compiled into both Rust and Kotlin to dictate how file chunks and commands are requested over the raw endpoints.
WinDroidFS is designed to fall back gracefully if standard raw USB access is blocked by the host OS:
- Direct USB (via AOA): The primary method. A high-speed raw pipe that requires zero setup on the Android side.
- ADB Forwarding: A developer-focused transport layer utilizing USB Debugging.
- USB Tethering: A fallback that routes TCP over a USB network interface, ensuring compatibility on heavily locked-down Windows machines.
- Local Wi-Fi: A completely wireless transfer method using the local network.
The Android application allows the phone to control several settings:
- Storage Scope: The user can choose the folders they want to share with the PC, or the entire device storage.
- Biometric Authentication: The user can choose to enable or disable biometric authentication.
- Keep Screen Awake: The user can keep the screen on while a PC is connected, so the phone doesn't lock mid-transfer.
- Wi-Fi Port: The user can change the port the phone listens on for Local Wi-Fi connections.
Every APK on the releases page is signed with the same key. Before installing, or in an app like AppVerifier, check that it matches:
- Package name:
dev.wilsoon.windroidfs - SHA-256 hash of signing certificate:
E6:95:D9:25:BF:29:45:8F:D8:C9:8B:80:D0:5A:93:0D:65:9E:5D:7E:00:45:EF:EC:CD:EA:C0:F7:F0:39:80:63
To check a downloaded APK on your PC, use apksigner from the Android SDK build-tools:
apksigner verify --print-certs WinDroidFS.apkIf the hash doesn't match, don't install it. An APK signed with any other key didn't come from me and Android won't update it over a genuine copy either.
If you have additional ideas, feel free to open an issue or start a pull request. These are some of the ideas I thought about but haven't actually started researching the feasbility of:
- Allowing rooted devices to access their root filesystem
Copyright (C) 2026 Wilson Oon
WinDroidFS is licensed under the GNU General Public License v3.0.