Problem still persists after a reboot. Adobe Reader version 2015.023.20053 Windows 7 Professional 64 bit.I saw the problem happen on my system. I opened the form and was able to input 01/01/2017 in a date field. I then closed Reader and it updated to version 2015.023.20053. Opened the form again and...

Today's update will not allow 01/01/2017  to be used as a date in a form. Tried on several computers on my network. Users were able to use 01/01/2017 on forms yesterday before the update.