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Nov 2, 2026

Proton OS

Proton OS 2026.11.01 is here!

Proton OS Desktop

New Core and Frontier images are out, with Collabora Office, Microsoft 365 and Teams in the Start Menu, a firewall turned on out of the box, and automatic security updates.

Proton OS 2026.11.01 is now available for both Core and Frontier. This release is about three things: working the way you already do, staying protected without thinking about it, and feeling at home from your first login.

Office and everyday apps

Collabora Office is now the default office suite. It opens and saves Word, Excel and PowerPoint files as well as OpenDocument files. During installation you can also choose to add Microsoft’s core fonts, so documents you share look the way their authors intended.

Microsoft 365 and Microsoft Teams are in the Start Menu as web apps, ready as soon as you sign in. Brave is the default browser, VLC plays almost any video or audio file, and Xpad gives you sticky notes on your desktop.

Windows apps with WinBoat

WinBoat lets you run Windows applications alongside your Linux desktop. It now runs on Podman instead of Docker, so there’s no background service running all the time. This release also improves how individual Windows apps open from WinBoat. When you set up WinBoat for the first time, choose Podman on the setup screen.

A fresh look

Proton OS has a new official background, Business Slate, on the desktop, login screen and boot menu. Two other wallpapers, Magenta and Paper, are included. New Windows 11-style icons make apps and folders easy to recognise, and a built-in window tiler lets you snap windows side by side.

Protected by default

  • Firewall: on from the first boot.

  • Automatic security updates: security fixes install in the background.

  • Monthly updates: system and app updates are set to run once a month.

  • earlyoom: if one app uses up all your memory, earlyoom stops it before your whole computer freezes.

  • Timeshift: create system restore points so you can roll back if something goes wrong.

Core or Frontier?

  • Proton OS Core is our stable release on the standard Debian 13 kernel. Choose it if you want predictability.

  • Proton OS Frontier has the same features on a newer kernel. Choose it for the latest hardware.

Coming December 1

The December release brings two new ways to keep your computer safe:

  • Restore points built in: Proton OS will save a restore point every week automatically. If something goes wrong, you’ll be able to start your computer from any of them right from the boot menu.

  • Proton Security: a new app that shows your computer’s security settings in one place. It starts with account protection, for example warning you if automatic sign-in is still turned on, so nobody can open your computer without your password. The ClamAV virus scanner will also come preinstalled.

Get Proton OS

Download the new image from SourceForge. Questions and feedback are welcome on our community forum, and you can report bugs on GitHub.


[Download Proton OS] → https://sourceforge.net/projects/proton-os/


Community forum → https://protonos.discourse.group/


Report a bug → https://github.com/ProtonOS-Linux/Proton-OS/issues

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