Fuller House didn't invite Mary-Kate and Ashley Olsen back for the final season

TVLine

“We did not reach out to them,” Candace Cameron Bure tells TVLine. “It was very clear several seasons ago that they did not want to do it.” Full House and Fuller House creator Jeff Franklin said during Season 3 he stopped reaching out to the Olsen twins when it became clear they didn't want to be involved on the Netflix series.