The most common issue for Acknowledgements that fail to download is an Antivirus program that could be blocking the program from transmitting. You will want to ensure that the program is added as an exception or exclusion to your antivirus for a transmission session.
Another common cause of missing acknowledgments is sending/receiving from more than one PC that isn't connected as they would be in a network setup. You should only be sent from one PC or one group of connected PCs in a network. For more information regarding network setups, please contact UltimateTax Support.
This information applies to all years of the UltimateTax software.