[quote]As the title says, still not able to acquire the quest "Xenology" from Xur. I've made a post on the forum about this already, and now, 3 weeks in, I'm still not able to acquire this quest. I've checked that I have no ciphers in inventory, none left to claim from season pass, I do not have the quest on any of the other characters.[/quote] Which means by process of elimination, you likely have a Cipher in your vault.