MW4 Patch Notes: 29 October Update, Weapon Tuning and What's Next

The latest Modern Warfare 4 update came out on 29 October 2026. It adds Possession, a new Halloween party mode. XP earn rates are up across several Multiplayer modes.

The 28 October update brought the 1st weapon tuning pass on 15 guns. 5 SMGs got more arm and hand damage. Quick Fix now stops healing when you take damage.

Each entry is named by its date. All 6 entries land before Season 1, which starts on 6 November.

Posted on 29 October 2026. It adds a new mode and covers Multiplayer and DMZ.

Playlist

• Possession is live. It is a new Halloween party mode.

Multiplayer

• XP earn rates are up across several Multiplayer modes.
• Overhead effects on Lithium no longer get in the way of play.
• Concussion Grenades no longer show a red damage indicator at the screen edges.
• A Time Remaining indicator that did nothing is gone from the Domination scoreboard.
• The Recon Drone can no longer be deployed out of bounds on Silkworm.
• Extra enemy location callouts on Shipment are removed.
• Out of bounds exploits on Mumbai are closed.

Rank up faster on the new rates: double XP.

DMZ

• Dynamic Ops, Side Ops and Story Mission replays pay more cash.
• Squadmate actions now count toward DMZ Mastery Camo challenges.
• The Scavenger no longer spots players the moment they deploy.
• You can pick up a hostage after assimilating.
• A disconnected teammate's Dog Tag can no longer be extracted and stored in your Dog Tag Case.
• Enemy helicopters no longer crash into the exfil helicopter during extraction.
• More spots on Hajin where players got stuck are fixed.
• Vehicles no longer overlap near the edge of Hajin.
• The 3-Plate Armor Vest for players who passed DMZ Level 37 before the 28 October fix is still on its way.

Posted on 28 October 2026. It brings the 1st weapon tuning pass and fixes across Multiplayer and DMZ.

Playlist

• Shipment 24/7, Kill Block 6v6 Gunfight and Gun Game joined the playlist on 27 October.
• Frontline, Inflation and Collateral run in the same playlist.
• Free-for-All is back to a score limit of 30 after a short test change.
• Free-for-All parties are capped at 2 players.

Movement

• A dive right after a sprint jump gave a speed boost. Dive velocity is down 23% as a short-term fix.
• A full fix that keeps dive speed comes in a future update.

Weapon tuning

The pass evens out damage by hit location for a steadier time to kill. Most of it lifts SMGs.

Class picks after the pass: best SMG and best assault rifle.

Global and Multiplayer fixes

• Camo and Special Camo unlock requirements show their progress counters again.
• Military Camos no longer show as locked after you Prestige a weapon.
• Prestiging from the DMZ FOB now resets Multiplayer Loadouts.
• Taking damage now stops Quick Fix health regen. Players had been tankier than intended.
• An exploit that took Riot Shields out of bounds is closed.
• UAVs are easier to see on Sentry.
• Some melee kills, backstabs and takedowns now track for Challenges.
• Players no longer load into Gun Game as Reece in place of their Operator.

DMZ

• Possum no longer triggers while the team that killed you is nearby. That lock ends after 4 minutes.
• Possum no longer revives a player who already abandoned their Operator.
• A black screen after a full squad wipe with Possum equipped is fixed.
• Using the 3D Printer during deployment no longer drops your Free Loadout weapons and equipment.
• The 3-Plate Armor Vest reward at DMZ Level 37 now unlocks.
• Several DMZ exploits are closed.

Posted on 25 October 2026. It covers Multiplayer, the menus and DMZ.

Multiplayer

• A kill in Search and Destroy and Collateral gives 300 XP, up from 100.
• The earlier fix for bomb stretching in Search and Destroy is rolled back. It left the bomb impossible to pick up in some spots. A new fix comes in a later update.
• The Collateral bomb no longer disappears after a player interacts with it.
• The brief freeze when you edit a Loadout for the 1st time in a match is fixed.
• The announcer intro at the start of Frontline and Hijack is fixed.

Global, menus and Gunsmith

• Gunsmith shows weapon stats for locked attachments.
• A Prestige reset now clears your Loadouts properly.
• Patriot XMR, Oden and Cronen Squall no longer show as Battle Rifles. All 3 are assault rifles in the weapons list.
• On Xbox and PC, players on the full Korean language setting can now launch Black Ops 7 from Modern Warfare 4.

DMZ

• The Hospital Elevator objective in the Critical Extraction story mission can no longer be skipped.
• Drill Charges deal less damage to the enemy Colossus.
• Builds saved from modified Blueprints no longer charge the full cost of the original Blueprint.
• Clear your Overflow Stash before the next deployment. The game no longer lets you try to deploy with items still in it.
• A Sedan missing from the Tac-Map is fixed.
• The oversized Last Stand icon is fixed.
• Various DMZ exploits are closed.

Weapon tuning was under review in this entry. The 1st pass landed on 28 October. Class picks after the pass: best loadouts.

Posted on 24 October 2026, the day after launch. It covers stability, Multiplayer and DMZ.

Global and Gunsmith

• This update adds stability fixes.
• DMZ weapon builds no longer show as usable in core Multiplayer.
• Applying camos or reticles in the DMZ Gunsmith no longer spends DMZ cash.
• Prestiging a weapon in Gunsmith now resets that weapon's attachments.
• On PC, the Split keybind follows a custom Ping bind.
• The M4 no longer equips a wrong attachment that broke its muzzle visual.

Multiplayer

• Hijack has better spawn locations and respawn timing.
• In Search and Destroy, the bomb can no longer be defused from an unintended distance or position.
• Portable Radar shows the minimap in Hardcore.
• The Deathstalker can no longer leave the map on Rooftops.
• A Favorite Operators bug in Collateral is fixed.

Map pool and modes: MW4 maps.

DMZ

• A party leader can no longer pull teammates out and leave their Active Duty Operators MIA.
• The exfil helicopter no longer disappears with the squad inside.
• Players no longer get stuck in rocks at more spots on Hajin.
• AI reinforcements in the Shopping Mission no longer spawn too often.
• Various exploits are closed.

Known issues listed on 24 October

• The regional map animation is turned off while a hitching fix is tested.
• On PC, extracting from DMZ with a looted Dog Tag can show a network error.

Posted on 23 October 2026, launch day.

• Military Camos and Apex Attachments no longer relock after you Prestige a weapon.
• Portable Radar works in Free-for-All.
• Parties of up to 4 could queue Free-for-All. The 28 October update caps them at 2.
• In DMZ, a squad can take a UAV Tower back from enemy control.
• Disposable Parachutes have 3 uses.
• Gas Masks, Durable ones included, no longer break the moment you enter a radiation zone.
• Prestige is unavailable while you search for a match. The menu now says so.
• Multiplayer and DMZ keep separate weapon tuning.
• A balance pass was already under review for the week after launch.

Camo tracks and steps: mastery camos. Hajin basics: DMZ guide.

Posted on 21 October 2026, 2 days before launch. It covers maps, modes, weapons, movement, killstreaks and events.

Content at launch

• 20 Multiplayer maps: 12 core 6v6, 3 Ground War, 4 Gunfight and Kill Block.
• Kill Block ran 3v3 and 10v10 Gunfight at launch. 6v6 Gunfight joined on 27 October.
• New modes: Inflation, Hijack, Collateral and Combat Outpost. Hardcore is in at launch.
• 33 weapons, 33 Operators and a Player Level track to 55.
• 2 Prestige paths, a 1st for Call of Duty.
• Create-a-Class unlocks at Player Level 4.

Weapons

• SMGs are stronger at close to mid range.
• 1-hit kill weapons get flinch and damage tuning.
• An attachment you unlock works on every gun that takes it.
• Weapon Prestige is back. A prestiged gun relocks its attachments and moves to a classic level track.
• Advanced Weapon Stats are live at launch.
• Gunsmith adds Optic Rail Placement for optics.

Every gun and its max level: weapons list. Class picks: best SMG and best assault rifle.

Perks, movement and killstreaks

• Tactical Sprint is no longer on by default. It comes with the Blood Rush perk.
• With Blood Rush, pressing sprint starts Tac Sprint by default.
• Battle Hardened blocks more of the Flash, Concussion and Screamer Mine.
• Resupply gives its 1st recharge faster.
• 17 killstreaks, set per loadout.
• The UAV costs 5 kills, 4 with Hardline.
• UAV health goes from 100 to 150.
• The Wheelson is reworked.
• Flash and Concussion have slightly less range and duration.

Streak costs and the nuke: nuke guide.

Events

• Weekly Challenges are absent in Season 1.
• Events carry the rewards: Apex Attachments, camos, Calling Cards and Operator skins.
• Recurring events give a 2nd chance at a top reward you missed.

From the Beta to launch

• The Weekend 2 streak cost tuning stays.
• The Beta cut UAV health. Launch raises it from 100 to 150.
• Spawns got more work on player separation, squad spawns and Hardpoint.

Shipment went live on 27 October as Shipment 24/7. Possession went live on 29 October.

Season 1 brings the 1st Battle Pass. It starts in MW4 and Warzone on the same day. Hajin comes to Battle Royale and Zodiac to Resurgence. Season 1 goes live at midnight ET on 6 November, which is 9 PM PT on 5 November.

Final Killcam returns to Free-for-All in a later backend update. A full fix for the sprint jump dive exploit is also in the works. Warzone details: Warzone integration.

Modern Warfare 4 is the 2026 Call of Duty. Its patch notes sit on 1 official page with a dated entry per update, newest on top.

From 21 to 29 October that page got 6 entries in 9 days. Some fixes go live 1st and show up later under a recently updated list. Live known issues are tracked on the studio's public board.

Entries split changes into Global, Multiplayer and DMZ. A line that names a platform applies to that platform, such as the PC Split keybind fix.

This page adds each new entry on top. Level and Prestige paths: prestige guide. XP weekends: double XP.