What is new in Viktor

Version by version: what was added, what changed and what got fixed. Newest first.

1.2.0 — 3 November 2026

Viktor now runs on Linux too — same Viktor, same window.

Viktor for Linux: a .deb package for Ubuntu, Debian, Linux Mint and relatives. Cleanup with the Hole, the space map, startup programs and the viktor command for AI assistants.
The Recycle Bin can be emptied — as an option. Viktor never ticks it himself; if you tick it, he empties it for good.
A feedback bubble at the bottom right — it shows up once you've used Viktor for a few cleanups.

A new window that runs on Windows and Linux. It looks the same, and the installer is smaller (57 MB instead of 70).
Cross Device (phone link) is only shown among startup programs, not preselected to be turned off.
Runs on .NET 10 (security updates until 2028).

Viktor can now also turn off Microsoft Store apps that start with Windows — Spotify, WhatsApp, Copilot and others.

Viktor is on winget — you can also install him with winget install MichalFoist.ViktorTheCleaner.
For the BIOS he shows the exact motherboard model and copies it, so you can find the right BIOS without opening the computer.

Viktor downloads and installs a new version by himself. One click and he takes care of the rest.

For companies there is now an MSI package — Viktor can be deployed in bulk through Intune, GPO or SCCM.

Viktor can measure how many Viktors are already running out in the world. Until now only downloads were visible.

Viktor finally sees Microsoft Store apps, can tell you how much memory they eat — and stopped being needlessly harsh on the score.

Microsoft Store apps in the startup list. Spotify, Xbox and friends were not shown at all until now — on one machine that hid over 1.2 GB of memory.
Memory in use, with a bar that shows what it is made of: the seven biggest programs plus the rest. Hover for the numbers.
A permanent “Startup” button in the bottom row, and a “Check again” button — until now the only way to re-run the check was to restart Viktor.

The score counts the HEALTH of the machine only, not its settings. Both used to be added together, so a healthy computer lost points over a tunable setting — for example −15 for eight startup programs.
Startup programs moved to the Performance section and their button is now called “Tune”. A slower start is not a sick computer.
Memory in use now sits on the left under the disks, so the bar is visible without scrolling. And it is coloured by how full the memory is — dark green on the left, amber and red towards the right.

The memory test no longer loses its “run” button once it has been run.
The memory meter used to promise Disk Map on hover, where it does not lead. It stays quiet now.
The help in five languages promised a different button than the app actually has.

The first public release of Viktor.