How to uninstall Upscayl on Windows

Upscayl saves each upscaled image to the output folder you pick, and those images stay where they are when you remove the app. If you added your own models, they live in the folder you pointed Upscayl at, which it does not remove either. Its settings are the only thing in its own data folder. This guide covers Upscayl installed machine-wide, for all users, from the Upscayl.Upscayl winget package.

Quit Upscayl first

Let any running upscale finish, then close the Upscayl window. It runs as several Upscayl.exe processes, so check Task Manager (Ctrl+Shift+Esc) for any still listed before you uninstall. The test found no startup entry.

Remove the app with its own uninstaller

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

winget uninstall --id Upscayl.Upscayl

Because this install lives in Program Files for all users, removing it asks for administrator access.

Where the data lives

Location	What it holds	What to do
`%ProgramFiles%\Upscayl`	Program files	The uninstaller removes it
`%APPDATA%\Upscayl`	Your settings, with caches and logs inside	Keep it if you might reinstall and want the same settings; safe to remove for a clean start
`%LOCALAPPDATA%\Upscayl-updater`	Downloaded update installers	Safe to remove
Start Menu and Desktop shortcuts for all users	Shortcuts to the app	Remove
Your output folders and any custom models folder	Upscaled images and models you added	Keep; they are yours, not the app's

Check the result

Run these read-only commands after the uninstall finishes:

Get-Process Upscayl -ErrorAction SilentlyContinue
winget list --id Upscayl.Upscayl
Test-Path "$env:ProgramFiles\Upscayl"
Test-Path "$env:APPDATA\Upscayl"
Test-Path "$env:LOCALAPPDATA\Upscayl-updater"

No output from Get-Process only means this query observed no matching process; a suppressed error leaves the running state unknown. A listed process means a window or helper is still open.
A completed winget list query with no match means the package record is gone; a matching row means the uninstall did not finish.
The first Test-Path returning False means the program folder is gone; True means files remain there.
Test-Path "$env:APPDATA\Upscayl" returning True means your settings are still there, which is expected unless you removed them yourself.
Test-Path "$env:LOCALAPPDATA\Upscayl-updater" returning True means downloaded update installers are still on disk and can be removed.

If you installed it with winget

winget uninstall runs the same uninstaller Settings › Apps uses and removes the same program files; it does not touch %APPDATA%\Upscayl or %LOCALAPPDATA%\Upscayl-updater on its own.

What Mole lists

For Upscayl installed machine-wide from winget:

The program folder goes with the app row.
%LOCALAPPDATA%\Upscayl-updater, which holds only downloaded update installers, is selected by default.
%APPDATA%\Upscayl is listed but not selected, since it holds your settings. The rebuildable caches inside it, Cache, Code Cache, DawnCache, GPUCache and logs, are separate rows selected by default.
The Start Menu and Desktop shortcuts for all users are selected by default.
A row grouping Windows' own records of when you opened the program is selected by default.
Output folders and custom model folders are never listed, since they live where you chose.

What this test covered

Tested on September 29, 2026 with Upscayl 2.15.0 installed through winget, machine-wide scope. The uninstaller is NSIS and ran silently. Every listed row was ticked and removed in this test. No image was upscaled and no custom model was added, so output folders and custom models were not part of the test.