How to uninstall KOOK on Windows

Your KOOK servers, friends and messages live on KOOK's servers, so uninstalling the desktop client does not delete them; the local data folder holds your login, settings and caches. This guide covers KOOK installed per-user from the Microsoft Store listing XP8M8FCMH4424Z through winget, which installs KOOK's own desktop client into your profile.

Quit KOOK first

Quit KOOK from its tray icon, not just the window, since closing the window keeps it running. KOOK runs several KOOK.exe processes at once; check Task Manager (Ctrl+Shift+Esc) that none is still listed before you uninstall. KOOK added no startup item in this test.

Remove the app with its own uninstaller

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

winget uninstall --id XP8M8FCMH4424Z

KOOK's uninstaller shows two windows of its own. The first asks you to confirm and has an unticked box, 同时删除本地缓存的登录信息 (also delete the cached login); tick it only if you want the saved login gone too. The second tells you the uninstall is finished.

Where the data lives

Location	What it holds	What to do
`%LOCALAPPDATA%\KOOK`	Program files, including older app versions kept for updates	The uninstaller removes it
`%APPDATA%\KOOK`	Login, settings and the client's caches and logs	Keep it if you plan to reinstall; remove it to clear the saved login
`HKCU\Software\KOOK`	Client settings	Safe to remove once KOOK is gone
`HKCU\Software\KaiHeiLa`	Settings under KOOK's former name, 开黑啦	Safe to remove once KOOK is gone
`HKCU\Software\Classes\kook`	The `kook://` link	Safe to remove once KOOK is gone
`%LOCALAPPDATA%\SquirrelTemp`	Files the installer framework keeps, shared by every app installed the same way	Not KOOK's alone; leave it
Two Windows Defender Firewall rules for KOOK	Let the client accept connections	Remove them in Windows Defender Firewall › Advanced settings if you want; they do nothing without the program

Check the result

Run these read-only commands after the uninstall finishes:

Get-Process KOOK -ErrorAction SilentlyContinue
winget list --id XP8M8FCMH4424Z
Test-Path "$env:LOCALAPPDATA\KOOK"
Test-Path "$env:APPDATA\KOOK"
Test-Path "HKCU:\Software\KaiHeiLa"

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.
Test-Path "$env:LOCALAPPDATA\KOOK" returning False means the program folder is gone; True means files remain there.
Test-Path "$env:APPDATA\KOOK" returning True means your login and settings are still there, which is expected unless you removed them.
Test-Path "HKCU:\Software\KaiHeiLa" returning True means the key under KOOK's former name is still there; remove it yourself if you want.

Account

Uninstalling does not delete your KOOK account, leave any server, or cancel a membership. Manage those in KOOK itself or on the web.

What Mole lists

For KOOK installed per-user through winget:

The program folder goes with the app row. The desktop shortcut, the Start Menu folder and a row grouping Windows' own records of when you opened the program are selected by default.
%APPDATA%\KOOK is listed but not selected, since it holds your login and settings. Its caches and logs (Cache, Code Cache, GPUCache, Crashpad, the Dawn caches and logs) are listed on their own and selected.
HKCU\Software\KOOK is listed but not selected.
The kook:// link is selected by default when it still points at the removed program, and backed up to a .reg file before removal.
The two firewall rules are reported after the uninstall and never removed.
HKCU\Software\KaiHeiLa is not listed; check it yourself after the uninstall. SquirrelTemp is never listed.

What this test covered

Tested on 2026-09-28 with KOOK 0.107.3 installed through winget, per-user scope, without signing in. Mole ran the uninstaller silently, but it still showed its confirmation and completion windows, which were clicked by hand with the login box left unticked. Every listed row was ticked and removed in this test. Not verified: a signed-in client, voice channels, or the "also delete the cached login" box.