Failed to call any datetime functions

We have been running FME Desktop 2022.2 on Windows Server 2019 machines for over a year, but found out last week any function calls to datetime or datetime reformating fails with this error “Failed to load timezone data. current_zone() failed: A mapping from the Windows Time Zone id "" was not found in the time zone mapping database”. For example, in the AttributeCreator, an attribute creation with the value being @DateTimeNow() got the above error. Anybody experienced this before and knew of a fix? Unfortunately I don’t have the option to reinstall FME on those machines.