If these steps do not fix the issue, the Ethernet port on your motherboard may have failed, or you may need to update your motherboard BIOS/Chipset drivers.
October 2025 Affected Systems: Windows 11 (21H2, 22H2, 23H2, 24H2) rtknicdriverinstallersfxexe windows 11 fixed
How to Fix RTK_NIC_DRIVER_INSTALLER.sfx.exe Errors on Windows 11 If these steps do not fix the issue,