How to uninstall PrusaSlicer on Windows

PrusaSlicer keeps your printer, filament and print profiles in its configuration folder, which the uninstaller leaves in place. Export them first with File › Export › Export Config Bundle, or copy the folder, if you might reinstall or move to another PC. Your 3MF projects and G-code files stay wherever you saved them. This guide covers PrusaSlicer installed machine-wide from the Prusa3D.PrusaSlicer winget package.

Quit PrusaSlicer first

Save your project and close PrusaSlicer and the G-code Viewer. Neither adds a startup entry; check Task Manager (Ctrl+Shift+Esc) for any prusa-slicer.exe or prusa-gcodeviewer.exe still listed.

Remove the app with its own uninstaller

Go to Settings › Apps › Installed apps, find PrusaSlicer, and choose Uninstall, or run:

winget uninstall --id Prusa3D.PrusaSlicer

This is a machine-wide install, so Windows asks for administrator access. The uninstaller removes the program folder and the PrusaSlicer and G-code Viewer shortcuts in the Start Menu and on the public desktop.

Where the data lives

Prusa describes the configuration folder in its configuration folder help article.

Check the result

Get-Process prusa-slicer, prusa-gcodeviewer -ErrorAction SilentlyContinue
winget list --id Prusa3D.PrusaSlicer
Test-Path "$env:ProgramFiles\Prusa3D\PrusaSlicer"
Test-Path "$env:APPDATA\PrusaSlicer"
Test-Path "$env:LOCALAPPDATA\PrusaSlicer"

• No output from Get-Process only means this query observed no matching process; a suppressed error leaves the running state unknown.
• A completed winget list query with no match means the package record is gone.
• Test-Path on the program folder returning False means it is gone.
• Test-Path "$env:APPDATA\PrusaSlicer" returning True means your profiles are still there, which is expected unless you removed them yourself.
• Test-Path "$env:LOCALAPPDATA\PrusaSlicer" returning True means the local app data is still there.

If you installed it with winget

winget uninstall runs the same uninstaller Settings › Apps uses; it does not touch either PrusaSlicer data folder.

Account

Uninstalling does not sign you out of Prusa Account or Prusa Connect, and printers you added there stay in your account.

What Mole lists

For PrusaSlicer installed machine-wide from winget:

• The program folder, the Start Menu and public desktop shortcuts for PrusaSlicer and G-code Viewer, and a row grouping Windows' own records of when you opened the program are selected by default.
• %APPDATA%\PrusaSlicer and %LOCALAPPDATA%\PrusaSlicer are listed but not selected, since they hold your profiles and settings.
• %APPDATA%\PrusaSlicer\Cache is listed on its own and selected by default.
• Your projects and G-code files are never listed.

What this test covered

Tested on September 28, 2026 with PrusaSlicer 2.9.6 installed through winget, machine scope, removed with its Inno Setup uninstaller running silently. Every listed row was ticked and removed in this test. Not verified: custom profiles, a signed-in Prusa Account, or a connected printer.