You sure? I think I stopped the reformed church from spreading because around 1660 I had converted all of the former provinces that were reformed, then again I did have deus vult and controlled most of europe east of france.dharper said:Nope. Once the Genie's out of the bottle, it can't be put back in. However, seeing the game year, the Reformation is almost over. The spread of Protestantism events stop firing after 1650.
Looking at the map, the reason for your crappy Reformation is the blobbing going on: if you only have a handful of countries in Europe, the Reformation is likely to start late - if it starts at all - and vast areas may be immune if one or more countries has Deus Vult or Divine Supremacy.