you'll need to make sure you don't have an active Kuva Lich or Sister of Parvos, which are the lich nemeses from the Grineer and Corpus factions, respectively. If you're battling one of these ...
Here's a quick summary of how to get and defeat Technocyte Coda in Warframe. Unlike Kuva Liches and Sisters of Parvos, the progenitor Warframe (the Warframe you have equipped at the time of ...