An executor can invalidate a will by influencing the testator, must not change the will's terms or take assets for personal use, and risks personal liability for failing to follow it. Settle all debts and taxes before distributing anything to beneficiaries.
Chapters
As the person in charge of handling an estate, here are 5 things I would never do, nor should you. 1, try to influence the testator. That's the person making the will. If you try to convince the person making the will to write it as you want it to be written, that could invalidate the entire thing. 2, go against what the will says or try to change it. If it's unclear, go see an estate lawyer. 3, take money or assets for your own personal use. Yes, you're in charge of the estate, but that doesn't mean you can do with it what you want. If you're a beneficiary, you can only take what you're entitled to. 4, not following the terms of the will. You have to do what the will says or you can be personally responsible. And 5, not paying the taxes or the debts of the estate. You are responsible for notifying creditors and paying the taxes, and that money comes out first. Don't let me catch you messing up.