You are not selecting "Erase User ID" but have selected "Program User ID". The Programming process only clears bits. If you have bits in your programmed User ID that are set, but that bit is already cleared, programming a 1 will not over-write a 0.
Re: 18F4550 programming failed using PICkit4 while verifying "User ID memory"
You are not selecting "Erase User ID" but have selected "Program User ID". The Programming process only clears bits. If you have bits in your programmed User ID that are set, but that bit is already cleared, programming a 1 will not over-write a 0.
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