The Deciphering the Data quest in ARC Raiders takes you between buildings in Spaceport. These areas can be very dangerous, as they contain high-value loot, so it’s best to come fully prepared to finish the quest.
Deciphering the Data Quest Walkthrough

To complete the quest, you need to finish these objectives:
- Use the Magnetic Decryptor in the Fuel Control Building.
- Reach the Arrival Building in Spaceport.
- Use the Magnetic Decryptor on the top floor of the Arrival Building.
Unlike the previous Paving the Way and Clean Dreams quests, all objectives are located within Spaceport.
Magnetic Decryptor – Fuel Control Building

- Go to Spaceport and head directly to the Fuel Control Building, which is next to the Rocket Assembly Building.
- Zoom in on the map if the “Fuel Control” text doesn’t appear.
- Enter the Fuel Control Building via the main entrance or the side door outside.
- Inside, head to the server room. The Magnetic Decryptor is a green machine located in this room. Interact with it to complete the first objective.
Magnetic Decryptor – Arrival Building

- After using the first Magnetic Decryptor, head to the Arrival Building.
- Once inside, your next objective is to use the Magnetic Decryptor on the top floor.
- Use the central staircase to reach the 2nd floor (the top floor).
- Go to the corner with the breachable door, open it, and enter the room.
- Inside, you’ll find several servers/machines. Interact with the Magnetic Decryptor to complete the quest.
Completing this quest will unlock the Groundbreaking quest next.