This is an unusual question because usually the executor or personal representative is the person putting the will into effect rather than the person challenging it. But the probate court will require that all heirs-at-law be given notice of a challenge to a will, no matter who is bringing the challenge.
Harry S. Margolis practices elder law, estate, and special needs planning in Boston and Wellesley, Massachusetts. He is the founder of ElderLawAnswers.com and answers consumer questions about estate planning issues here and at AskHarry.info.