LG is currently under scrutiny as users report that connecting specific LG monitors to Windows PCs triggers the automatic installation of an application that promotes paid subscriptions to McAfee antivirus software. This LG Monitor App Installer, delivered through Windows Update, does so without any prior approval from the user, with the first interaction often being an advertisement.
McAfee Ads Appear Without Prior Consent
The popular YouTube channel Gamers Nexus demonstrated this process using an LG UltraGear 34GX900A-B monitor. Their findings revealed that the LG Monitor App Installer appeared approximately one minute after Windows Update installed the relevant LG packages, all without any installation request or consent screen. Over the course of 32 consecutive system boots, the application displayed a McAfee promotion 31 times, with only one boot showcasing a utility from LG itself. The McAfee offer includes a 30-day trial that subsequently transitions into a paid subscription.
Once the application is installed, it configures itself to launch at Windows startup, ensuring that its promotional messages reappear after subsequent reboots, regardless of whether the user had requested the software in the first place.
LG App Runs Outside the Windows App Sandbox
According to its Microsoft Store listing, the LG Monitor App Installer has the capability to access the internet and utilize “all system resources.” Microsoft refers to this capability as runFullTrust, which allows desktop applications to function outside the confines of the restricted Windows AppContainer. While this permission does not automatically grant the app administrator or SYSTEM privileges, it raises valid cybersecurity and privacy concerns due to the increased freedom it affords compared to sandboxed applications.
LG characterizes the installer as a means to obtain compatible monitor applications, such as OnScreen Control, LG Switch, and Dual Controller. The Store listing also contains language regarding the McAfee trial, confirming that antivirus promotion is indeed a component of the application.
Older LG Monitors Are Also Affected
It is important for users to note that this behavior is not confined to newer models. Gamers Nexus reported receiving the same popup from an LG UltraFine 32UN880-B monitor, which was purchased three years prior and had been in use in their office.
Reports of the LG Monitor App Installer appearing without user approval have surfaced since at least 2024. In recent weeks, an uptick in user reports regarding McAfee advertisements suggests that LG may have expanded the installer’s reach to additional models or altered the frequency of these promotions. Android Authority has described the application as functioning similarly to adware.
Windows Allows Device-Associated Apps to Install Automatically
Microsoft also plays a role in this scenario, as Windows permits manufacturers to link Store applications with device metadata. This feature can facilitate the delivery of drivers and useful companion utilities when compatible hardware is detected. However, it also allows for the installation of promotional software without providing the user with a clear choice. The current model exposes a vulnerability, as Windows treats vendor association as adequate authorization, even when the user merely intends to use the monitor as a display.
How to Remove This App
For users looking to remove the LG Monitor App Installer, this can be accomplished through Windows Settings, where they can also disable remaining LG entries under Startup Apps. Additionally, Windows Pro and Enterprise users have the option to enable “Prevent automatic download of applications associated with device metadata” under Computer Configuration, Administrative Templates, System, and Device Installation. However, enabling this policy may inadvertently block useful companion applications for other hardware.
As of now, LG has not publicly addressed this behavior, nor has Microsoft announced any changes that would require explicit user approval before the installation of device-associated Store applications.
