California Gov. Gavin Newsom signed a reversal to the decision to grant parole, saying he believes Krenwinkel is still a danger to society.
A California panel recommended Charles Manson follower Leslie Van Houten be paroled, leaving the decision now in the hands of Gov. Gavin Newsom.
The fight over Charles Manson's estate is down to two people.
The complicated legal battle over the estate and remains of Charles Manson continued in a Los Angeles court on Friday, as the serial killer's grandson made an impassioned plea to the judge.
Nearly 50 years have passed since the two nights of shocking violence that came to be known as the Manson family murders.
Charles Manson, the mass murderer whose name became synonymous with evil after his followers' 1969 Los Angeles killing spree, died Sunday.