Most of the stress around this question comes from uncertainty. Not the actual rules.
In many situations, there’s a mix of emotions, financial interests, and family dynamics. So even when the executor has clear authority, disagreements can slow things down.
For example, I’ve worked on a sale with 11 heirs and one executor. Everyone ultimately agreed to sell. But every single heir still had to sign documents along the way.
So while legal authority sits with the executor, real-world execution often involves cooperation.