Can a Catholic woman who marries a protestant man in a register office receive Holy Communion?

Roman Catholic AnswerNot until that marriage is regularized by the Church. If a Catholic attempts marriage outside the Church without a dispensation they are effectively put themselves outside of God's grace. To receive Holy Communion in such a state is extremely dangerous as St. Paul warns in his Epistles. Part of the problem is that Catholics have been poorly catechized and don't realize what is important and that the Eucharist is the actual Body and Blood of Christ, and that to receive It in a state of sin is perilous.