Although the Date Parameter in Tableau Desktop Is Set to "12/31/9999", the View Displays "12/31/7999".

Please consider the workaround for this parameter issue.

Option 1

Set the maximum value to 12/31/9999 in Range. This allows the parameter to be set to 12/31/9999. Refer to the image below for parameter settings.

Option 2

Change the parameter data type from [Date] to [String]. If it is necessary to use "12/31/9999" as the parameter value, this change will resolve the display issue on both Desktop and Server. 

Note

• Since parameter value is stored as a string, it must be defined in the order of year, month, and day to suit your purpose.
• To use this parameter as a date in a calculated field, use the DATE() or DATEPARSE() function to convert the string to a date type.