404 Not Found Watch Dogs: Legion Mission

1. MEET Nowt at Somerset House / ACCESS Nowt's AV Server / ESCAPE the Area

Head to Somerset House. This is a restricted area with uniformed access for Albion members. You can of course use the Albion operative and with its help get into the room where the server is located, but a much safer and faster way is to use the cargo drone and the spiderbot. You can summon the drone on the platform you will find on the northeast side of the building.

The server is located in a room that you can get to through a hole in the roof. Stay in a safe area, summon your spiderbot and use it to jump down onto the roof of the building.

Open the hatch, jump inside and approach the server. Deploy a rootkit.

You will establish a video call with Newt. In order to get to know each other better she will give you another task.

2. GO TO Nexus Tower

Go to The Nexus Tower. When you get there Nowt will tell you what your task is. You must erase the hardrive of the computer inside this building.

3. ERASE the Quantum Computer / ESCAPE the Area

The computer is in a restricted area. The easiest way to erase it is to stay outside the building and use the security cameras, the drone flying inside and the spiderbot that you can summon in the docking station that you will find near the room where the computer server is. First hijack the security camera that is in the same room as the computer.

The computer is protected by a laser field, and to deactivate it you must use the control penel located next to it. However, to be able to use it, you must first solve the network bypass.

It is not necessary but as a precaution, you can also raise the panels by the two turrets standing nearby.This will prevent the turrets from firing at your spiderbot in case the alarm is triggered.

The puzzle is located in the room above the computer. In order to have easy access to all nodes of the puzzle, it is best to take control of the drone that flies in this room.

Once you take control of it, fly it up to avoid being noticed by the guards and the solve the puzzle.

Then switch to the camera from where you can access the spiderbot docking station and summon one.

Jump over the lasers, open the hatch and enter the room with the computer.

Use the panel to deactivate the lasers around the computer and quickly interact with the computer. This will start the erase process, which will take a while.

During this time you should stay near the computer but you can move around as you will probably have to hide from the guard who will realize that the lasers have been turned off and will come to turn them back on. Be careful not to stand too close to the computer because when the lasers are turned back on, you can accidentally activate the alarm.

If the spiderbot is destroyed then you can summon another one or simply switch to the camera next to your computer and that will be enough to complete the erasure process. Once the process is complete, switch back to your character.

The video below shows the method described above.

4. DISCOVER Nowt's Big Contract / ESCAPE the Area

Head to GBB House. The access point you need to get to is on the roof of the building. It's a restricted area with uniformed access for construction workers and Albion. The easiest solution will be to use a cargo drone. When you fly up from the east side, you will get very close to the room you want to get to.

If you have a spiderbot you can use it and go inside through the hole in the wall next to the locked door.

If you want to enter the room yourself, you have to get the key first. You can download it by using one of the security cameras on the roof from the nearby laptop.

When you break into the access point you will watch the beginning of a presentation of something called Daybreak carried out by the hologram of Skye Larsen. After watching the presentation leave the restricted area. This mission will end and you will receive another one - "Coming Home".