In European border regions, citizens experience obstacles when collaborating with their neighbours. The b-solutions initiative intends to ease cross-border interactions by offering sustainable solutions to legal and administrative obstacles throughout Europe. This new volume is a compendium of 41 cases of obstacle selected in 2022 and 2023 in the framework of b-solutions. The cases’ summaries here presented provide details on involved entities, legal provisions and potential solutions to solve these obstacles. As such, they offer insights