Call of Duty: Modern Warfare 4 Launch Patch Notes

October 25, 2026

We've been keeping a close eye on the issues you've been reporting and working through them as quickly as we can. Today's update addresses several of those issues, along with additional gameplay adjustments and improvements.

There's more work ahead, and we're not slowing down. The team is also looking at potential weapon tuning changes for a future update. We'll continue rolling out fixes, making adjustments, and keeping you informed along the way. 

GLOBAL

• Fixed an issue on XBOX and PC where players using the full Korean language setting could not launch Black Ops 7 from MW4.

UI/UX

• Fixed an issue where weapon stats were not displayed for locked Attachments in Gunsmith.
• Updated the Prestige reset process to ensure Loadouts are properly cleared when Prestiging.
• Fixed a visual issue in the Optic Rail Placement menu.
• Fixed an issue where the Resource Management Trait description would scroll too fast to read.
• Fixed an issue where the Patriot XMR, Oden, and Cronen Squall were incorrectly classified as Battle Rifles in various places throughout the game.
• Fixed an issue where DMZ Lieutenant Intel unlock requirements and the eliminated indicator could disappear when hovering over previously eliminated Lieutenants on the Boss Board.

MULTIPLAYER

We’ve rolled back a previous fix for “bomb stretching” in Search and Destroy due to a knock-on issue in which players were unable to pick up the bomb in certain positions. We will be addressing bomb stretching again in an update as soon as we are able.

We’re also looking at XP earn rates in Multiplayer modes and will be making some changes, starting with this update.

• XP for 1 kill has been boosted from 100 to 300 in Search and Destroy and Collateral.
• Fixed an issue on Collateral where the bomb could disappear after players interacted with it.
• Fixed an issue where the game could briefly freeze when editing a Loadout for the first time during a match.
• Fixed an issue where the announcer's game mode introduction would not play at the start of Frontline or Hijack matches.

DMZ

• Fixed an issue where players could bypass the Hospital Elevator objective during the Critical Extraction Story Mission.
• Decreased Drill Charge damage against enemy Colossus.
• Fixed an issue where a Sedan could be missing from its marked location on the Tac-Map.
• Fixed an issue where enemy AI could clip through the Crashed Drone.
• Fixed an issue where the Last Stand icon appeared oversized on the Minimap.
• Fixed an issue where purchasing saved Builds from modified Blueprints could incorrectly charge players the full cost of the original Blueprint.
• Fixed an issue where players could attempt to deploy while items remained in their Overflow Stash. Note: Operators must reconcile their Overflow Stash before the next deployment.
• Fixed several issues in the Breaking New Ground (onboarding) mission.

KNOWN ISSUES

Track live issues on our official Trello board and follow CODUpdates for the latest news.

RECENTLY UPDATED

• Closed various DMZ exploits.
• We've addressed an issue where players were being AFK kicked while spectating in some Multiplayer modes.

October 24, 2026

Another round of fixes and improvements is here for Modern Warfare 4, covering Multiplayer and DMZ.

Our teams continue to focus on improving stability, addressing bugs, resolving exploits, and making quality of life improvements across the game.

We're committed to delivering consistent updates and improving the experience for everyone. There's still plenty of work ahead, and we'll continue addressing issues and sharing our progress as we move forward.

Thank you for your continued feedback and support.

Happy hunting!

GLOBAL

Stability

• Fixed several stability and crash issues for a better experience across all modes.

UI/UX

• Fixed an issue where DMZ Stash options could incorrectly appear in the middle of the screen.
• Fixed various instances where front end menus could close unexpectedly.
• Fixed an issue on PC where the Split keybind would not update to reflect the player's custom Ping keybind, resulting in players thinking they were unable to split inventory stacks.
• Fixed an issue where Finishing Move effects could remain playing after returning to the Create a Class menu.
• Fixed an issue where DMZ Weapon Builds could incorrectly appear as usable in Core Multiplayer.
• Fixed an issue where applying some weapon camos or reticles in DMZ Gunsmith could result in a deduction of DMZ cash.
• Fixed an issue where editing a loadout could sometimes cause a non-Melee weapon to appear in the Melee slot of the in-game Loadout menu. 
• Fixed an issue where a weapon’s attachments would not automatically reset when Prestiging in Gunsmith.

Weapons

• Fixed an issue where an incorrect attachment could be equipped to the M4 and cause a visual bug on the weapon’s muzzle.
• Fixed a visual issue where bullets could appear to float inside empty or partially used magazines for the La Sombra Venenosa Blueprint.

MULTIPLAYER

• Improved spawn locations and respawn timing in Hijack.

Bug Fixes

• Fixed an issue where the Portable Radar Field Upgrade would not display the Minimap while active in Hardcore matches.
• Fixed an issue in Search and Destroy where players could defuse the bomb from an unintended distance or position.
• Fixed an issue on Rooftops where the Deathstalker Killstreak could travel outside the map boundaries.
• Fixed an issue where players' Favorite Operators were not properly equipped in Collateral.
• Note: Weapon Prestiging and Player Prestiging are unavailable while actively searching for a match. We have updated the UI to clarify.

DMZ

• Fixed even more areas where players could become stuck in rocks on Hajin.
• Fixed an issue where Party Leaders could pull teammates out of DMZ without their consent, causing their Active Duty Operators to be marked as MIA.
• Fixed an issue where objective markers could display on the wrong enemy during the Obtain Code steps of the Dark Zone Story Mission. 
• Fixed an out-of-bounds issue in the FOB.
• Fixed some instances of incorrect data displaying on looted Dog Tags and Bounties.
• Fixed an issue where the Exfil helicopter could disappear while players were still inside.
• Fixed an issue where AI reinforcements during the Shopping Mission were spawning too frequently.
• Fixed an issue where the Philanthropist Order on Page 19 would not track Weekly Mission Challenges completed before the Order was unlocked.
• Closed various exploits.

KNOWN ISSUES

• The regional map animation while searching for lobbies has been temporarily disabled as part of a prospective fix for reports of hitching.
• We're investigating an issue causing some players to be kicked while spectating in Multiplayer.
• Players may experience a network error when in DMZ extracting with a looted Dog Tag on PC.

Track live issues on our official Trello board and follow CODUpdates for the latest news.

RECENTLY UPDATED

• Addressed an issue causing some player models to appear in static or incorrect animations. This may result in enemy players appearing in unintended states.
• Various stability and crash fixes for PC.

Kill Block 

• New dynamic Multiplayer map 
  • Supports 3v3 and 10v10 Gunfight at launch 
  • 6v6 modes supported post-launch  
  • New Slabs and configurations coming post-launch 

MODES 

Over a dozen Multiplayer modes are available at launch, including returning favorites and several new additions (including Hardcore). Get ready to jump into these brand-new modes on day one, plus returning classics including TDM, Domination, Hardpoint, Kill Confirmed, Free-For-All, Frontline, Search & Destroy, Gunfight, and Gun Game. 

New Modes 

• Inflation 
  • Eliminate enemies and collect their cash. The more you carry, the bigger the target on your back. Players who reach the High Value Target threshold are revealed to both teams, creating a constant choice between hunting enemy HVTs and protecting your own.  
• Hijack 
  • Fight for control of the Data Spike, then carry, throw, or pass it on the way to the enemy Comm Station. Plant it to begin scoring and defend the upload to earn the full bonus.  
• Collateral 
  • A round-based tactical mode combining Search & Destroy mechanics with a Buy Phase. Start each match with a Pistol and $800, earn cash through objective play and eliminations, then spend it between rounds to build your loadout.  
• Combat Outpost 
  • Ground War expands into a large-scale fight for territory. Capture Outposts to score and establish new spawn locations, then reinforce them to unlock increasingly powerful team rewards.  

Infected and the new Possession mode are also dropping next week as a Halloween treat. For more intel on everything coming at launch, check out our Maps & Modes blog with all the details.  

PROVING GROUNDS: MOBILITY COURSE 

Building on the Mobility Course available during the Beta, Proving Grounds brings together movement practice and a variety of combat training exercises in one place. Whether you’re looking to improve your movement, sharpen your combat skills, or get more familiar with gameplay mechanics, Proving Grounds gives you the space to practice before jumping into a match or test your skills for a high score. 

WEAPONS 

Modern Warfare 4 launches with 33 weapons across Primary, Secondary, and Melee categories. Create-a-Class unlocks at Player Level 4, with Default Loadouts available before then. 

PRIMARY WEAPONS 

ASSAULT RIFLES 

• Han 86 
• M4 
• Hyeon Burst 
• Patriot XMR 
• Kastov 762 
• Oden 
• Axion 
• Cronen Squall  

SUBMACHINE GUNS 

• ISO Nightshade 
• VEL 46 
• Wz.55 Striga 
• PPSh-41 
• X-58 Nyx  

SHOTGUNS 

• Rezi 12 
• Warlord  

LIGHT MACHINE GUNS 

• Finn LMG 
• Type 73 
• APOC-338  

MARKSMAN RIFLES 

• MAR-9 
• Oris 8.6 
• Mosin-Nagant  

SNIPER RIFLES 

• KG-7 Vulcan 
• Astaroth .57 
• Signal 50  

SECONDARY WEAPONS 

PISTOLS 

• Sang 9mm 
• Krait P68 
• .50 GS 
• Mojave .357 

LAUNCHERS 

• PILA 
• RPG-8 
• JOKR 
• PM-40 Anvil 

MELEE 

• FSS Carbon Edge 1095  

WEAPON TUNING 

We received a lot of feedback about TTK and the pace of our game during the first weekend of Beta. We had a short window to make adjustments and collect data, so we made the choice to swing hard on changes in Weekend 2. Gunfights in the second weekend of Beta felt more meaningful; players had a little more breathing room and the pace of our game felt better across all game modes. We collected a lot of feedback and in-game data, and the TTK from Weekend 2 was strongly preferred by all skill levels. 

While there was a clear player preference for Weekend 2’s TTK, we did not get the balance between weapons and classes exactly right. Since then, our team has spent countless hours and late nights playtesting and iterating to improve balance between all our weapons. 

SMGs are now more efficient in close to mid-range combat, powerful one hit kill weapons are tempered with flinch and damage tuning, and all weapons have had a deep balance pass to ensure the weapon you pick is a choice, not a requirement. 

We have also combed through all our attachments and tuned them to make sure Gunsmith allows flexibility and balance. Advanced Weapon Stats are also available at launch, so you’ll know everything you need to make the right choice for your playstyle. 

Our weapon pillars are: 

• Distinction – Classes and weapons have clear, unique roles on the battlefield. 
• Balance – Players can find success with every tool available. 
• Feel – Weapons feel awesome, visceral, and fun. 

These pillars must work together in harmony to deliver the best version of Modern Warfare 4. Our team is excited about the tuning we have arrived at for launch. We will be playing right alongside you and updating our game to hone it to perfection. 

WEAPON PROGRESSION 

The MW4 weapon system provides deep weapon customization with a variety of attachments and modifications. Our weapon progression is a streamlined approach to grow your arsenal without friction, respecting your time and reducing the grind to acquire functional customization. 

No redundant unlocks. The speed of weapon progression increases with every shared attachment you’ve earned. 

Once unlocked, shared attachments are immediately available for every weapon that can use them. Every attachment is a valuable piece of equipment that makes your entire arsenal more powerful. 

Since the Beta we have worked to improve how weapon progression displays weapon unlocks instead of weapons levels. We’ve also improved the visualization of weapon progress after a match to more clearly represent a how progress is skipped with shared attachments. 

WEAPON PRESTIGE 

For those of you who want an even deeper progression journey, we’ve got you covered. Weapon Prestige is back for players who want a more dedicated grind to their favorite weapon. If a player chooses to Prestige their weapon, all attachment on that weapon (including shared attachments) become locked, and the weapon moves to a classic level system unlock. The shared attachments will remain unlocked on other weapons that have not been Prestiged. 

OPTIC & RETICLE CUSTOMIZATION 

We have added a new Optic Rail Placement feature in Gunsmith that allows you to tailor your weapon’s ADS sight picture exactly to your preference.  

This is a completely cosmetic adjustment that can have a profound effect on the feel of your weapon. We also allow tuning from the ADS perspective in Gunsmith, so there is no guesswork involved in dialing placement down to perfection. What you see in Gunsmith is what you get in game. 

Reticle Customization is also available on optics, with a small but significant improvement made to thermal optics. When you earn and equip custom reticle for a thermal, it comes with a completely different thermal effect. If you find a thermal optic you like but don’t enjoy that specific thermal effect, we have created a variety of authentic and distinct thermal options that are available when you customize our thermal optics reticle. 

PERK PLACEMENTS 

Since the Beta, we've reconfigured our Perk distribution to better balance the categories and to keep interesting player choices between speed, durability, utility and stealth.  

Here’s where we landed for launch: 

Perk 1 

• Quick Fix 
• Overkill 
• High Alert 
• Ghost 
• Resupply 
• Kill Chain 

Perk 2 

• Hardline 
• Blood Rush 
• Bomb Squad 
• Fast Hands 
• Ninja 
• Birdseye 

Perk 3 

• Lethal Reach 
• Combat Grid 
• Battle Hardened 
• Scavenger 
• Tracker 
• Cold-Blooded  

PERK TUNING 

We’ve buffed some Perks based on Beta feedback: 

• Battle Hardened will now more effectively negate most of the effects from Tactical grenades like the Flash, Concussion, and Screamer Mine. 
• Resupply has been buffed to provide your first recharge faster. 
• Blood Rush has been updated so that pressing the sprint key automatically triggers Tactical Sprint by default. If you prefer to manage this directly, head towards the Movement Advanced Settings to adjust it. 

PLAYER MOVEMENT 

Movement in Modern Warfare 4 is about playing the way you want, whether you prefer being a tactical elite operator carefully clearing rooms, an action hero star mantling over cars and sliding under obstacles, or a heavy gunner holding down an objective. Since the Beta, we have focused hard on making sure transitions between actions are balanced, feel grounded, and allow a clear benefit at a clear cost. The results are smoother movement that feels more authentic than ever before. 

Another area we have focused on improving is how enemy players move. We found several bugs where the third-person and first-person experience did not match, misrepresenting the enemy’s actions, creating some unrealistic looking movements, and allowing a few snaking opportunities. All the issues we identified have been fixed, and we will carefully monitor for any additional changes. 

Lastly, we have kept the change from Beta to make Tactical Sprint not available by default. It lives on the Perk Blood Rush, which is now in the second tier. Since the player is using a valuable Perk slot to Tactical Sprint, we removed the additional sprint out penalty that Tac Sprint typically incurs, and for the benefit of thumbs and controllers worldwide, the default input for Tactical Sprint is now “single tap run.” This means when you activate sprint with Blood Rush equipped, you will Tac Sprint as long as stamina allows. For players who want full autonomy over when they use their Tac Sprint, we still have “double tap” and “single tap sprint” options available. 

We’re excited for you to get your hands on our updated movement experience on the new maps we have available for launch. 

MULTIPLAYER SPAWNS 

Spawn work has continued since the Beta, including further iteration on the changes we made to player separation, squad spawning, and Hardpoint spawn predictability. Spawns have been reoriented around consistent flow and making sure you’re never far from the fight. 

KILLSTREAKS 

MW4 features 17 Killstreaks at launch, any of which can be attached to individual Multiplayer loadouts for the first time in a Modern Warfare game. 

We are launching with our new Smart Streak Meter where performing objective tasks like capturing a point in Domination will contribute towards your Killstreak meter. Killstreak tuning in the second weekend of the Beta that increased the cost of all streaks will remain for launch, meaning UAVs are 5 kills (or 4 kills with the Hardline perk equipped). 

While the team is happy where most of these landed in the Beta, two specific changes have been made for launch: 

• UAV health has been increased from 100 to 150, following feedback that UAVs were too easy to shoot down after their health was reduced during the Beta.  
• Wheelson pathing and targeting logic have been reworked to be more aggressive and prevent confusion when targets change quickly. 

EQUIPMENT 

At launch, Create-a-Class includes 9 Tacticals, 11 Lethals, and 12 Field Upgrades, ranging from returning equipment like the Flash Grenade, Stim, Frag Grenade, and Trophy System to options like the Screamer Mine, Zip Gun, Smoke Wall, and Seeker Drone.  

Here are some of the tweaks we’ve made in time for launch: 

TACTICALS 

• Flash and Concussion effective range and duration have been slightly reduced. 

UI / UX 

• Improved communication around Shared Attachments (see above) 
• Reduced or eliminated pre-game countdown timers that had been originally intended to give previous generation consoles time to load 
• Added logic to start pre-loading maps earlier to avoid slowdowns waiting for the map to finish loading 
• Gameplay Improvements 
  • Reduced blur size on splashes to improve gameplay visibility 
• Gunny 
  • Improved the positioning of Gunny tutorials 
  • Reduced the notifications you get about Gunny 
  • Gunny got a facelift! 
• Weapon Builds 
  • Weapon Builds were previously automatically saved when players left the Gunsmith, flooding their Build list. Weapon Build saving in Gunsmith is now a manual process. 
  • Weapon Builds edited in-match are now automatically saved. 
• Various minor improvements and fixes to the front end 

AUDIO 

• Added missing destruction audio for various destructible objects across Multiplayer maps. 
• Fixed an issue where mounted vehicle turrets were missing audio. 
• Fixed an issue where Heartbeat Sensor pings could become muted underwater. 
• Added audio cues when sending and receiving text messages. 
• Fixed issues causing audio dropouts when using the Assault Drone and Bomb Glider. 
• Adjusted the audio mix and audible distances for the Chopper Gunner and its weapons. 
• Updated Gunship audio to improve the overall Killstreak experience. 
• Improved the Nuke sequence audio mix and fixed issues causing audio dropouts. 

BUG FIXES 

MULTIPLAYER 

• Fixed a server crash that could occur during Multiplayer matches. 
• Fixed various visual issues on Cachette. 
• Fixed an issue where the Seeker Drone could incorrectly deploy out of bounds and be destroyed in certain areas of Multiplayer maps. 
• Fixed an issue where the Killstreak counter could reset after using the Argonaut. 
• Fixed an issue where match completion events were not being properly recorded in Multiplayer and DMZ. 

DMZ 

• Addressed on Oct. 20: 
  • Addressed various crashes and stability issues, including a crash when breaching the door in Breaking New Ground. 
  • Fixed an issue where the After-Action Report could incorrectly display 0 XP earned after a player's first match. 
  • Fixed an issue where the ISO Apex Attachment would not function as intended in DMZ. 
  • Fixed an issue where players could get double completion credit for story missions. 
  • Fixed an issue where enemy AI could move into unintended areas when a player was downed during Breaking New Ground. 
  • Fixed some instances where enemy AI could run over players while infilling. 
  • Fixed an issue where some Dynamic Operations “find the keypad codes in safes” could appear in locked spaces. 
  • Fixed an issue where only the player who dealt the final blow to a Commander received XP and progress toward the “King Slayer” Calling Card when playing in a squad. 
  • Fixed an issue where the Impact Smokes Pro Trait would not activate when a player was downed. 
  • Fixed some incorrect DMZ Orders description text. 
  • Fixed an issue where shadows could visibly pop in and out when moving around the FOB. 
  • Fixed an issue where the tablet screen could fail to turn on after searching the crashed drone in Breaking New Ground. 
  • Fixed an issue on where a missing prompt could prevent players from progressing the Chemical Denial Dynamic Op at NuriGO Mall on Nintendo Switch 2. 
  • Fixed an issue where the Gunsmith Attachment menu could remain stuck onscreen during deployment. 
  • Fixed an issue where players could not purchase saved Blueprint modifications on Nintendo Switch 2. 
  • Fixed some areas where players could get stuck in the rocks in Hajin.  
  • Fixed an issue where players could not equip an Active Duty Operator in their Showcase. 
  • Fixed an issue where selecting Untrack Recipe with no recipes tracked at the 3D Printer could kick the player out of the FOB. 
  • Fixed an issue where selling starting equipment or dismissing Active Duty Operators with starting equipment equipped before your first deployment could result in a soft lock. 
• Addressed on Oct. 21: 
  • Fixed an error that could occur when opening the Dog Tag Case. 
  • Fixed an issue where the Toxic Intercept Op could incorrectly fail after completing the Defend the Bomb objective. 
  • Fixed a performance issue on PC when holding a Heartbeat Sensor with a weapon equipped. 
  • Fixed an issue where AI enemies could run over players during infiltration in NK Wilderness. 
  • Fixed an issue where Dynamic Operations text could display incorrectly when Menu Text Size was set to Larger or Largest. 
  • Fixed an issue where the Orders rewards section of the End Game Report could appear in low resolution. 
  • Fixed some unintended voice lines during Breaking New Ground. 

WEAPONS 

• Fixed an issue where the Firing Range could incorrectly display a 0.00 TTK for the Rezi 12 Shotgun. 
• Added weapon level icons to Melee and Launcher weapons. 

CAMPAIGN 

• Fixed a progression blocker in the Hotel sequence of Counter Attack. 

UI / UX 

• Several hundred bugs. Killed dead.  

PRE-LOAD DETAILS 

If you haven’t already, remember to pre-load the latest updates and make sure you’ve got the required content packs installed so you can dive straight into MW4 on the 23rd.