Kexts, or kernel extensions, are files that expand the basic functionality of macOS’s Darwin kernel, allowing the kernel to communicate with your computer’s hardware. However, managing kexts ...

If your Ethernet port has stopped working on your Mac, check System Information to find the version number of the Incompatible Kernel Extension Configuration file installed.

Press Command-Shift-G and in the Go To the Folder dialog, enter /System/Library/Extensions. Delete the file named iSpy.kext.

At this point, feel free to rummage around in the Extensions folder inside the Library folder inside the System folder at the root level of your Mac’s startup drive and chuck out the offending ...