Excel does not automatically recognize the ISO 8601 format, the format dates are stored in and exported in for Datastores, as a "valid" Date/Time value. Therefore if you are ever exporting from a Datastore and need to convert the stored Date/Time value (2019-06-11T19:04:46.471Z) into a Date/Time that Excel can use (6/11/19 7:04 PM):
Use the following Excel Function:
***Change A1 to be your specific cell.
Then format the field/column to be whatever Date or Date/Time you want/need.
Note: These times are all in GMT. Additional conversions are necessary to take into account timezones.
Click here for an example Excel spreadsheet.