[quote]It’s been like 5-6 weeks with no quest offered from Xur. I have no exotic cipher, and I haven’t had the quest either. How do I fix this??[/quote] That's happening because you'd previously abandoned the quest. You'll have to collect and complete it using another character before it'll reappear. If none of your characters have access to it, you'll just have to wait until Bungie fixes this bug.