I found out recently that the armor quest is bugged. If you fully rekindle your armor on another character that doesn't have the quest step in this case, step 9, it doesn't completely the quest step. So in my case I'm currently locked out of completing the solstice quest line.
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Me too. I wish Bungie was better at communicating. An update to this issue is long overdue. Most of my friends were not playing D2. Those that came back for the event have already quit playing again.