robertferanec , 12-15-2017, 12:24 PM
If you would like to cover the VIAs, you may want to check "tenting" or you need to use negative expansion. If expansion is 0, it means it has same size as the pad. If you use a positive expansion number, it means how much bigger the mask opening is comparing to the pad ... if you use negative expansion number, it means how much smaller the mask opening is comparing to the pad edges.
PS: Mask settings are not influencing electrical connection of VIA.
Notice the "Force complete tenting on top/bottom":