1. Run the below SQL query to check if "UserPasswords" is the only column in the ADSAccount table that has been encrypted:
select ColumnName from DialogColumn where IsCrypted = 1 and UID_DialogTable = 'ADS-T-ADSAccount'
2. Clean up the existing "UserPasswords" values in the ADSAccount table by running the below SQL update:
update ADSAccount set UserPassword = null where ISNULL(UserPassword, '') <> ''
Please ensure a recent database backup exists.