At the moment it is not possible to buy tickets at the box office. You book a time slot online in advance, so that we can distribute all visitors as well as possible throughout the building and everyone can easily keep sufficient distance.
Are you ordering a ticket with a free ticket or discount card, such as a Museum card or a Rembrandt pass? Don't forget to take it with you to the museum. If you cannot have your card scanned at the cash register, you will unfortunately still have to pay the full entrance fee.