What it is
Bottom line:
If you have a Realtek Ethernet chip (e.g., RTL8111, RTL8125, RTL8168) and the file comes from Realtek or your PC manufacturer, it’s safe and useful.
If you’re unsure of the source → don’t run it → download fresh from the official Realtek support page. rtk-nic-driver-installer.sfx.exe windows 11
Contact: support@realtek.com (for driver signing issues) Commentary: "rtk-nic-driver-installer
) into a single executable that automatically extracts and runs the installation wizard when opened. Target Devices: rtk-nic-driver-installer.sfx.exe windows 11