When attempting to open years 2017 through 2020 and occasionally 2021, I get a message that indicates I do not have credentials to open it.  I can open 2016, 2021 usually, and 2022 and 2023.  I installed the program patches required for all post-2016 years before January 1 and these programs worked fine earlier in the year.  The program patch had to do with the way Lacerte interacts with Windows.