The Serie A champions were beaten 2-1 in Lisbon last week, but Tacchinardi - who wore the Juve jersey between 1994 and 2007 - has little doubt that they will turn things around and reach the final in Turin.
"Juventus will reach the final, although it will be a tough battle. They might suffer, but I have no doubt that they will reach the final at their own stadium," Tacchinardi told Goal.
"It will be a complicated game, but Juventus are the favourites for me. Home advantage will play a big role. I am confident that Juve can turn things around.
"Conte has already proven to be a great coach and can also bring the team's winning mentality to Europe.
"He deserves to reach the final for his commitment, his philosophy and his man-management."
The Europa League final takes place at the Juventus Stadium on May 14.