All recent Delft-FEWS releases require 64-bit hardware and OS. Deltares supports at maximum 5 versions. If still on an unsupported version it is strongly recommended to upgrade to a supported version.version status release date end of support 2021.02 to be released Jan 2022 when 2024.01 is released (approx. Q3 2024) 2021.01 supported Jul 2021 when 2023.02 is released (approx. Q1 2024) 2020.02 supported Mar 2021 when 2023.01 is released (approx. Q3 2023) 2020.01 supported Jul 2020 when 2022.02 is released (approx. Q1 2023) 2019.02 supported Mar 2020 when 2022.01 is released (approx. Q3 2022) 2018.02 supported Mar 2019 when 2021.02 is released, Jan 2022