The European Consortium for Ocean Research Drilling (ECORD) regrettably announces that IODP Expedition 377: Arctic Ocean Paleoceanography will not be implemented in August to October 2021. In spring 2020, the ECORD Science Operator (ESO) opened a call to the commercial market to provide platform, drilling and ice management services for this expedition. The commercial bids received were evaluated at the end of May 2020. Unfortunately, it has been concluded that the procurement has failed to achieve its objectives. The primary and overriding reason for this is the combination of facilities and services required cannot be fulfilled within the expedition’s available budget. At its recent spring meeting on 10-11 June 2020, ECORD Council confirmed the removal of Expedition 377 from the 2021 mission-specific platform expedition schedule. Later in June, the ECORD Facility Board will consider options for future MSP expeditions for 2021-2023. The Call for Scientists will now be stopped, and announcements on the future of Expedition 377 will be made via IODP-related channels in due course. Current applications will be deleted, and a fresh Call for Scientist issued if and when appropriate.