Download the file manually from https://bulkdata.uspto.gov/data2/patent/maintenancefee/and replace existing file in McNair/Patent Data/Maintenance Fee Data.
===For the USPTO Historical Patent Data===
Has not been updated since 2015, but if you need to download Historical Patent data this is the link: https://bulkdata.uspto.gov/data2/patent/historical/2014/
== Specifications of USPTO Data To Extract ==