The 42-year-old trainer says the duo will not be considered for the showpiece event and revealed the Chelsea defender faked an injury before an international friendly.
Carvalho abandoned Portugal's training camp ahead of a Euro 2012 qualifier against Cyprus in August after learning he was omitted from the starting XI.
Bosingwa, on the other hand, voiced his discontent at being left out of Bento's squad for the playoff games against Bosnia and Herzegovina and said that the coach was unfit to guide the Seleccao.
Both players had declared they would not represent the national team again as long as Bento was in charge and the 42-year-old has guaranteed he will not take the duo back.
"There is no apology that can fix things," he told reporters. "They will watch the Euro as spectators."
Bento went on to reveal that feigning an injury ahead of February's friendly against Argentina was the reason why the Chelsea full-back was not part of his plans during the Euro 2012 qualifying campaign.
"A player must never, in any circumstance, fake an injury in order not to play for the national team," he explained. "All his teammates saw what he did. Everyone must take responsibility for their mistakes."