The file below is compatible with the latest binary version of Samsung Galaxy Note 8(SM-N950F)
Follow this LINK to download the recommended version of Odin.exe for this Factory Firmware.
Please make sure you boot your device to download mode by holding Volume Down+Bixby+Power key, at the prompt, Press Volume Up to enter Download Mode.
Once you’re on Download Mode, you can see from the bootloader info, the binary version of your device so you don’t end up, downloading incompatible file. See Screenshot below: