How to uninstall UGREEN NAS on Windows

UGREEN NAS (绿联私有云) is the desktop client for a UGREEN NAS; your files live on the NAS itself, so uninstalling the client never touches them. Files you downloaded to this PC stay where you saved them. This guide covers the client installed machine-wide from the UGREEN.UGREENNAS winget package.

Quit the client first

Let any transfer finish, then quit the client from its window or tray icon. It runs several UGREEN_Nas.exe processes at once; check Task Manager (Ctrl+Shift+Esc) that none is still listed before you uninstall. The client added no startup item in this test.

Remove the app with its own uninstaller

Go to Settings › Apps › Installed apps, find the UGREEN NAS client, and choose Uninstall, or run:

winget uninstall --id UGREEN.UGREENNAS

The uninstaller asks for administrator access, since the client was installed for all users.

Where the data lives

Location	What it holds	What to do
`Program Files (x86)\UGREEN_Nas`	Program files	The uninstaller removes it
`%APPDATA%\UGREEN_Nas`	Login, settings and local data of the client	Keep it if you plan to reinstall; otherwise remove it
`%LOCALAPPDATA%\UGREEN_Nas-updater`	Downloaded update installers	Safe to remove
`HKLM\SOFTWARE\Ugreen_Nas`	A machine-wide key the installer writes	Harmless once the client is gone; leave it unless you are comfortable editing `HKEY_LOCAL_MACHINE`
Public Start Menu and desktop shortcuts	Shortcuts for all users	The uninstaller removes them

Check the result

Run these read-only commands after the uninstall finishes:

Get-Process UGREEN_Nas -ErrorAction SilentlyContinue
winget list --id UGREEN.UGREENNAS
Test-Path "${env:ProgramFiles(x86)}\UGREEN_Nas"
Test-Path "$env:APPDATA\UGREEN_Nas"
Test-Path "$env:LOCALAPPDATA\UGREEN_Nas-updater"

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; 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\UGREEN_Nas" returning True means the client's login and settings are still there, which is expected unless you removed them yourself.
The updater folder returning True means downloaded installers are still there; it is safe to remove.

Account

Uninstalling does not remove this PC from your UGREEN account's signed-in devices or change anything on the NAS. Manage devices and users from the NAS itself.

What Mole lists

For the UGREEN NAS client installed machine-wide from winget:

The program folder goes with the app row. The public Start Menu and desktop shortcuts and a row grouping Windows' own records of when you opened the program are selected by default.
%APPDATA%\UGREEN_Nas is listed but not selected.
%LOCALAPPDATA%\UGREEN_Nas-updater, which holds only downloaded installers, is selected by default.
Machine-wide registry keys under HKEY_LOCAL_MACHINE are never listed.

What this test covered

Tested on 2026-09-28 with the UGREEN NAS client 6.2.0 installed through winget, machine-wide, without signing in or connecting to a NAS. The NSIS uninstaller ran silently, and every listed row was ticked and removed in this test. Not verified: a signed-in account, a connected NAS, or sync and backup tasks.