[Critical Bug] Error 10612-4001: "Illegal Tool Detected" prevents login in Genshin Impact

[NurySenpaiVT]

Description:
When attempting to launch Genshin Impact using the latest version of XXMI Launcher, the game blocks the connection immediately upon load or login.
It appears the game's anti-cheat system is flagging the launcher or its injection methods as prohibited software, resulting in Error Code: 10612-4001 ("Illegal tool detected").
Expected Behavior:
The game should launch and allow login seamlessly through the launcher, as it did in previous versions.
Steps to Reproduce:

1. Open the updated XXMI Launcher.
2. Launch Genshin Impact via the launcher.
3. Wait for the game to load the main menu or attempt to enter the world.
4. A popup appears stating: "Illegal tool detected, please restart your device. Error Code: 10612-4001" (See attached screenshots).

[Aoi-the-Hert]

I am also having this issue.

[leotorrez]

Duplicated of #214

[coconutman313]

same issue here, only started to have this issue after the game update on 16th Jan 2026.