Error 404

Key takeaways

Use these points to plan the mission without exposing its unresolved details.

• Optional content Error 404 is not treated as a principal story mission. It can be approached as additional Dogtown content alongside the expansion’s main objectives.
• Prepare before entering Review cyberware, ammunition, healing supplies and quickhack costs before committing to the objective area. A build that can operate quietly or control a crowded fight has the most flexibility.
• Expect a hostile environment Dogtown missions commonly place the player in spaces where cover, sightlines and exits matter. Avoid beginning an encounter without identifying a retreat path.
• Verify exact rewards The available source pack does not confirm a unique item, exact payment or complete loot list for Error 404. Treat reward claims found elsewhere as requiring editorial verification.

Error 404

Error 404 is an optional mission in Cyberpunk 2077 associated with Phantom Liberty and the Dogtown section of the game.

Error 404 belongs to the optional mission content connected with Dogtown in Cyberpunk 2077: Phantom Liberty. It is separate from the central Phantom Liberty storyline, so completing it is not presented as a replacement for the expansion’s principal objectives. Its setting places the mission within Dogtown’s harsher contract economy, where access, information and survival are commonly shaped by local power rather than by Night City’s conventional institutions.

The mission is designed around the kind of controlled infiltration and confrontation that defines much of Cyberpunk 2077’s side content. Players can generally prepare by checking their cyberware, weapons, healing items and quickhacks before entering the mission area. The safest approach depends on the build: stealth-oriented characters should reduce exposure and use the environment, while combat-focused characters benefit from cover, line of sight and a plan for dealing with reinforcements.

Because the available reference material for this page is model-derived rather than a supplied walkthrough, exact encounter counts, named targets, loot tables and dialogue outcomes are not stated here as fact. The page therefore focuses on the mission’s verified high-level identity and on preparation guidance that does not depend on unconfirmed route details. Exact objective wording and any unique rewards should be checked against an in-game capture before publication.

Where this sits

Requirements

The mission requires access to the relevant Phantom Liberty and Dogtown content. Exact trigger conditions are not confirmed by the supplied material.

• RequiredAccess to Phantom Liberty contentError 404 is associated with the Phantom Liberty side-content pool rather than the ordinary base-game mission list.
• RequiredAccess to DogtownThe mission is connected to Dogtown, so the area must be available to the player before the objective can be pursued.
• RecommendedCombat or stealth preparationBring a reliable weapon or quickhack setup, healing supplies and enough ammunition for an encounter that may become hostile.
• OptionalManual save before startingA separate save makes it easier to test an approach or recover if an unconfirmed dialogue or combat outcome proves undesirable.

Objectives

1. Start Error 404 from its available Dogtown mission marker.The exact trigger conversation and objective text are not confirmed in the source material.
2. Investigate the mission area and pursue the active objective.Use the objective marker, scan nearby devices and characters, and check alternate entrances before forcing a direct fight.
3. Resolve the hostile encounter or mission problem.The precise target, enemy composition and resolution conditions require verification from an in-game walkthrough.
4. Leave the area and collect the mission outcome.Confirm that the objective tracker has updated before travelling away from the mission site.

Walkthrough

1. 01

   Reach the mission area

   Travel to the Error 404 marker

   Open the map and travel to the mission marker in Dogtown once Error 404 is available. Before entering the objective area, make a manual save and check that your weapons, cyberware and healing items are ready.

   Location: Dogtown

   TipApproach with a vehicle or fast-travel option when available so you begin with a clean route and full preparation.

2. 02

   Investigate the area

   Survey the approach

   Do not immediately cross the first open space or start combat at the marker. Scan the surroundings for cameras, turrets, hackable objects, cover and alternate paths, then decide whether your build is better suited to stealth or a direct assault.

   Location: Dogtown mission area

   Watch outStarting a fight before locating cover can expose V to several firing angles and may remove quieter options.

3. 03

   Continue the investigation

   Follow the active objective

   Use the current objective marker as the primary guide and interact with marked people, terminals or doors when prompted. If the marker appears to point through a secured space, search the nearby perimeter for a ladder, doorway or hackable route instead of assuming the front entrance is mandatory.

   Location: Dogtown mission area

   TipScanning before interacting can reveal useful access points and tells you whether a device can be manipulated remotely.

   Checkpoint
4. 04

   Deal with the opposition

   Choose an approach to the confrontation

   If you are maintaining stealth, isolate cameras and avoid unnecessary takedowns until the objective requires them. If detection has already occurred, move toward solid cover, use quickhacks to interrupt the most dangerous enemy and avoid standing in the centre of the encounter space.

   Location: Mission objective area

   Watch outThe exact enemy roster is not confirmed by the supplied source pack, so do not rely on an unverified enemy count or named target.

5. 05

   Finish the active task

   Complete the mission interaction

   After the area is secure or the required objective has been reached, interact with the marked character or device and wait for the objective tracker to update. Check the immediate surroundings for mission-related items before leaving, but do not treat ordinary containers as confirmed unique rewards.

   Location: Mission objective area

   TipA quick scan after the final interaction can confirm whether a nearby shard, terminal or container is connected to the mission.

   Checkpoint
6. 06

   Complete Error 404

   Confirm completion and depart

   Remain in the mission area until the journal and objective tracker show that Error 404 has advanced or concluded. Once the update appears, leave by the safest available route and review the reward notification rather than assuming that every dropped item is mission-specific.

   Location: Dogtown

   Watch outThe source material does not confirm a unique ending scene, exact payment or special drop, so those details should be verified in-game.

   Checkpoint

Mission mechanics

Error 404 should be approached as an environment-led mission rather than as a sequence that requires one particular build. Cyberware that improves survivability, stealth, scanning or quickhack control can all be useful, but the most important preparation is having a dependable answer to detection. If an infiltration breaks down, retreat to cover and rebuild the fight instead of trying to remain exposed while several threats have line of sight.

Dogtown’s spaces reward deliberate movement. Scan before opening doors or crossing courtyards, identify cameras and other surveillance devices, and note where a fight can be pulled back toward cover. A silenced weapon, non-lethal control option or disabling quickhack may preserve flexibility, while a high-damage weapon and defensive cyberware can shorten a forced engagement.

The available material does not establish a special puzzle, timed sequence, vehicle chase or mandatory boss encounter for Error 404. Those mechanics have been left out rather than inferred from the mission’s title. Players should follow the live objective tracker if the mission introduces a bespoke interaction that is not represented in this general preparation guidance.

What works and what does not

Checklist

• Create a manual save before entering the mission area.Useful for testing the opening approach or recovering from an unexpected detection.
• Check weapons, ammunition and healing items.The exact encounter scale is not confirmed, so carry a complete combat setup.
• Review cyberware and quickhacks.Prioritise tools that support either stealth or rapid recovery after detection.
• Scan the approach for cameras and hackable objects.Surveillance can expose V before the main objective begins.
• Identify hard cover and a retreat route.Do this before interacting with the mission marker.
• Wait for the objective tracker to update before leaving.This confirms that the mission has registered the completed interaction.
• Review the reward notification and journal entry.Do not assume an unverified item or payment is unique to Error 404.

Failure conditions

• V is killed during the mission encounterReload the latest checkpoint or manual save and change the approach, improve cover use or reduce the number of active threats.
• A required mission interaction is abandoned before the tracker updatesReturn to the marked area and follow the current objective rather than travelling away immediately.
• Stealth is brokenDetection is not automatically a mission failure in the general guidance available here, but it can turn the area hostile and remove a quieter route.
• V leaves before the mission registers completionCheck the journal and objective tracker before departing; return to the marker if the mission remains active.

Rewards

• Mission completion reward
  Completing Error 404 provides the normal mission outcome, but the exact payment is not verified.
• Loot from the mission area
  Hostile-area containers and defeated enemies may provide ordinary equipment or crafting materials; no unique drop is confirmed here.
• Journal progression
  Finishing the mission advances the related optional-content record in the journal.

Characters in this mission

• DogtownPrimary region associated with the mission.

Aftermath

Trivia

• The mission title uses the familiar computer error phrase “Error 404,” but the available material does not confirm that the title corresponds to a specific in-game terminal, netrunner or technical puzzle.
• Error 404 is associated with Dogtown optional content rather than being identified here as a required main-story mission.
• The mission’s exact reward table and complete objective wording remain editorially unverified.

Relationships