I went to a Lutheran church and was told not to participate in their communion, as I went to an Evangelical church, not a Lutheran church.
Ed
That is the practice in the LCMS, just as with the RC and the Orthodox. It isn't because Lutherans don't accept your Christianity, but rather that our view of the Real Presence of Christ in the bread and wine means that if we were to allow someone who disbelieves in the Real Presence to partake, they might be bringing judgment upon themselves, and we are not in the business of bringing judgment, but rather saving grace. IOW, don't take it personally :-)