Did they switch the Dumbledore in Harry Potter movies?

Yes, there was a change of actor playing Dumbledore in the Harry Potter movies.

* Richard Harris played Dumbledore in the first two films, *Harry Potter and the Sorcerer's Stone* (2001) and *Harry Potter and the Chamber of Secrets* (2002).

* Michael Gambon took over the role starting with *Harry Potter and the Prisoner of Azkaban* (2004) and continued through the rest of the series.

Harris passed away in 2002, which led to the casting change.