Modern Warfare patch notes for Season 4's full update

Updates and patch notes for Modern Warfare Season 4 explained.

Modern Warfare Season 4 brings with a variety of new updates, which includes new Operators and Warzone Rumble mode.

It also marks the inclusion of in-match events in Warzone and the start of a new Battle Pass, which is shared between both games.

On this page you'll find the Modern Warfare: Warzone patch notes as part of the latest Modern Warfare update.

On this page:

Modern Warfare: Warzone Season 4 updates

Season 4 of Modern Warfare doesn't just mark the arrival of a new Battle Pass, it also introduces a host of new features for you to experiment with. This includes:

  • Warzone Rumble - a new 50v50 game mode in Warzone
  • Weapon mastery challenges, which become available once you've unlocked Gold for a weapon and offer you a new set of rewards for each weapon
  • Three in-match events - Jailbreak, Fire Sale and Supply Choppa - which hold the potential to turn the match in your favour
  • The Contraband Contract System, which, if completed successfully, will reward you with a permanent blueprint
  • New Operators and skins, including Captain Price, Surreptitious and Killswitch
  • Four new songs for the Modern Warfare playlist and six for the Warzone playlist
  • New vehicle and weapon skins for Warzone
  • Modified special operations: Just reward - veteran and just reward - regular
  • Season 4 Battle Pass with 100 levels of new unlocks, including weapon Blueprints and COD Points

Warzone Season 6 is here! New are Vanguard weapons STG 44 and Garand, WW2 bunkers and the .410 Ironhide and Grav. Elsewhere, learn our recommendations for the best Warzone weapons across the game, including best assault rifles and popular choices such as the AMAX, C58, MG 82, OTs 9, FARA 83, Stoner 63, AK-47, Bullfrog, PPSh-41 and Swiss K31.

Modern Warfare patch notes: What's been introduced in Modern Warfare's Season 4 update

Below you can find the patch notes for the update, copied verbatim from the developer Infinity Ward:

General Fixes:

  • Fix for some players not receiving their Season 3 emblem
  • Fixes to help reduce players encountering Error Code 13-71. If you still experience this after today's update, please reach out to Activision Customer Support
  • Fix for a bug where the Ghost Perk was not hiding players from the Heartbeat Sensor when viewing the Killcam
  • Fixed an issue where some players were unable to activate a Nuke after getting the appropriate number of kills
  • Fix for a bug where the 4th Operator Mission for Talon, “Complete 2 Warzone Plunder Matches” was not tracking as intended
  • Fix for an issue where some players could find long wait times when attempting to load into Ground War matches
  • Fix for a bug where neutral Hardpoints were appearing yellow instead of grey
  • Various exploit fixes across multiple maps
  • Fix for the Officer Challenge, “Get 20 kill while crouched” not tracking properly for some players
  • Fixed a bug where the white health regen was triggering on downing other players even if Quick Fix wasn't equipped
  • Fix for an exploit where players could sometimes call in duplicate UAVs
  • Added new weapon perks to the Specialist Bonus (the bonus earned after getting 8 kills while specialist is active): Frangible-Disabling, Frangible-Wounding, Mo'Money, Recon, Heavy Hitter, FMJ, Presence of Mind
  • Fixed a bug where players were unable to perform executions when on some elevated surfaces
  • Fixes to help prevent an issue where players were able to move before the match countdown timer completed
  • Fixes to help prevent against black graphical corruption issues some players were seeing
  • Fix for the “For the Cause” grip tape not appearing properly on the base M4
  • Improved stability fixes for PC
  • Fixes to help prevent issues with voice chat


  • Lowered ammo count for reload warning on belt fed LMG
  • Fixed bug with HDR and Sleight of Hand where reloading would not give ammo to the player

5 Things We Like About Call of Duty: Warzone (And 4 Things We Don't)


  • Loot Update: New weapons and updated Blueprints! Be on the lookout for the Fennec, CR-56 Amax, Renetti, and more!
  • Fixed a bug where the Recon Contract could spawn inside an Ammo Supply cache, making it unusable
  • After completing the Contraband Mission and calling in the extract helicopter, players could shoot the helicopter without receiving hitmarkers and the helicopter would remain on screen indefinitely
  • Fixed a bug where players were able to drop their weapon in the Gulag
  • Fix for an exploit where players were able to duplicate Self Revive kits

Special Operations:

  • Fix for a bug where a player was stuck in 3rd person gameplay
  • Daily Challenges are now displayed alongside Multiplayer and Warzone challenges
  • Fixed an issue where unlocking an Operator skin in Co-Op would not unlock the base skin for that Operator as well
  • Fixed a bug where the game would not end correctly if the last player alive used Team Revive immediately before dying

Special Operations: Survival:

  • Fix for being able to duplicate the Juggernaut Suit Munition minigun
  • Fix for rare instances of waves not ending properly
  • Fixed an exploit on St. Petrograd where players could fully hide from soldiers behind a bar

Hope you enjoy Modern Warfare Season 4!

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Lottie Lynn

Lottie Lynn

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Lottie Lynn is Eurogamer's guides writer. She likes exploring new games and still has nightmares about the moon from Majora's Mask.


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