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About Proton OS

A practical way to keep working with the technology you already own.

Proton OS is a lightweight, business-ready operating system for compatible PCs that no longer run well on newer versions of Windows. It comes with everyday applications, automatic updates, and built-in security, so you can spend less time configuring the computer and more time using it.

For businesses that depend on older Windows software, Proton OS also includes compatibility tools that may let those applications continue running. We recommend testing every essential program, printer, scanner, and other device before replacing the existing installation.

System Requirement
Proton OS Logo

Proton OS

SIMPLE. SECURE. YOURS.

Before downloading, make sure the computer meets these requirements:

  • Processor: AMD or Intel 64-bit dual-core processor

  • Memory: 4GB of Ram minimum (8GB recommended)

  • Storage: 25GB available for Proton OS. Additional space is required for Windows compability environment

  • Installation Media: 8GB minimum USB drive 

Proton OS Download
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Modern • Stable • Secure

Proton OS  1.0 (Core)

Upgrade your workstation with our 64-bit release. You get a clean, intuitive desktop environment, zero background tracking, and rock-solid stability for your daily productivity.

ISO Updated on: 2026.10.01
SHA-256: b767091478db7eb5be28718efffb54e827e2ae6eff3c5fd7a349c1ea4c0684b3

ISO: ProtonOS-Core-1.0-64bit-2026.10.01.iso

Latest • Stable • Secure

Proton OS 1.0 (Frontier)

Next-Gen Hardware Support. Zero Compromise.

Get instant, out-of-the-box compatibility for brand-new processors, GPUs, and Wi-Fi chipsets—powered by the latest Debian Linux kernel 7.1 on a rock-solid Debian base.

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ISO Updated on: 2026.10.01
SHA-256: 17c7229995dfe77c359c28ed767c846156901cebf02b50420c7084b96ed26507

ISO: ProtonOS-Frontier-1.0-64bit-2026.10.01.iso

What Proton OS Includes

Familiar from day one

The clean desktop is designed for people coming from Windows. Essential tools are preconfigured, so your team can get back to work without first becoming Linux experts.

Everyday tools included

An office suite, PDF reader, modern browser, and other common utilities are ready to use. You can handle routine work without hunting down basic applications.

Your business data stays yours

Proton OS does not include background telemetry, and it does not require a cloud account. You retain control of the computer and the information stored on it.

Updates handled automatically

Software and security updates can run automatically, helping keep the system current without adding another recurring task to your day.

No license or subscription

Proton OS is free and open source. A professional installation or optional support plan may carry a service fee, and Windows applications or the Windows environment may still require valid licenses.

Security configured by default

An active firewall, AppArmor enforcement, automatic security updates, and disabled remote access reduce common risks from the moment the system is installed

A stable, lightweight foundation

Proton OS is built on Debian 13 and tuned to use fewer system resources. That can make compatible hardware feel more responsive and remain useful longer.

Keep using compatible Windows software

Proton OS includes tools that can run many Windows applications inside a real Windows environment.
Because compatibility varies, business-critical programs and peripherals should be tested before migration.

Before you switch, verify what your business depends on.

Not every Windows application or peripheral will work in every configuration. Make a list of the programs, printers, scanners, databases, and files that are essential to your operation. Test them before changing the current computer, and keep a complete backup with a recovery plan.

How to Install Proton OS

Installing Proton OS Yourself

Back up all important files before beginning. Download the Proton OS image, create a bootable USB drive, start the computer from that drive, and follow the installer. Installing a new operating system can erase existing files and applications, so businesses should confirm compatibility and recovery options first.

1

Download the ISO File​

Prerequisite

Download the official Proto OS ISO image from our site. ProtonOS

2

Create a Bootable USB Drive

Requires 8 GB+ USB drive

  1. Insert your preferred USB drive.

  2. Download and open belanaEtcher.

  3. Select Flash from file and select the Proton OS ISO.

  4. Select Target (USB Drive).

  5. Flash!

3

Boot from the USB Drive

Select boot device

  1. Plug in USB drive on computer you want to format it with Proton OS.

  2. Restart your computer.

  3. Immediately press your device's Boot Menu key repeatedly during startup. (F12, F11, F8, F10, Esc, F2 or Del depending on manufacturer).

  4. Select your USB drive from the boot menu and press Enter.

4

Run the Installer

Configure system options

  1. Wait for Proton OS to boot to desktop.

  2. You can test OS right from the USB before installing or Install Proto OS 

  3. Once the Live boot loads, double-click Install Proto OS Icon.

  4. Choose your language, keyboard layout, and Wi-Fi network.

5

Select Installation Type & Complete Setup

Warning: Erasing disk will wipe all data

  1. Choose Erase disk and install Proto OS for a clean install, or select Install alongside if dual-booting.

  2. Select your timezone and set up your personal account (Name, Computer Name, Username, and Password).

  3. Click Install Now and wait for installation to finish.

  4. Click Restart Now when prompted and remove the USB drive when computer start booting again.

Stay Informed.

Get release notes, compatibility updates, and news about upcoming Proton OS builds.

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