A court in Cairo ordered Arabic network al-Jazeera to stop broadcasting in Egypt.
Government officials say the popular and often controversial network is a national threat and biased toward the Muslim Brotherhood.
Three other news channels considered pro-Islamist were accused of operating illegally and pulled off the air.
Meanwhile, a panel of judges ruled that the Muslim Brotherhood should be dissolved. The ruling is non-binding, but it's another setback for the Islamist group, which has faced an intense crackdown from the Egyptian army and interim government.
Deposed Egyptian President Mohammed Morsi and hundreds of Muslim Brotherhood members are facing prosecution.
They are charged with inciting violence that led to the deaths of other Egyptians.