The order from the court issued Friday does not elaborate on the decision.
Cosby filed an appeal earlier this month saying that Pennsylvania trial Judge Steven O’Neill had a feud with a key pretrial witness, the former county prosecutor who declined to arrest Cosby a decade earlier. And they say his decision to let five other accusers testify among other alleged issues are grounds for a new trial.
A jury convicted the 81-year-old Cosby in April of drugging and molesting a woman in 2004.
The legally blind comedian is housed in a new state prison about 20 miles (32 kilometers) from his Philadelphia-area estate.