You have got to be kidding.
I'm Muslim and I get Catholic/Protestant rebels in three provinces, but Hungary which is Christian gets no rebels...
The Austrian Empire
Additional orders
Divert about 20 armies to destroy the rebels in the West. Grant amnesty to any who surrender peacefully (the best and most repentent of the rebels may even have the honour of being incorporated into the Imperial Army). If they insist on rebelling, kill them without mercy, confiscate their fields and water the fields with their blood.