Right-click the file in Task Manager → Open file location . If it's not in C:\Windows\Temp\Realtek_* , run a full Windows Defender scan immediately.
Disable driver signature enforcement temporarily (only if installer fails with signature error) rtknicdriverinstallersfxexe windows 11 fixed
process runs, it may trigger system instability if the hardware (like the Realtek PCIe GbE Family Controller) or the OS cannot handle the specific driver build being pushed. Permanent Fix Steps Right-click the file in Task Manager → Open file location