MW4 patch notes: October 30, 2026

A small update going into the weekend, and the first one where Infinity Ward publishes the DMZ cash figures themselves rather than describing the change as a general adjustment. Infected joins the playlist as the second Halloween mode, following Possession the day before.

The DMZ economy section is the substantive change. Activision states that cash rewards were “adjusted across DMZ to improve the in-game economy”, and this time it prints the numbers on both sides of the change — Dynamic Ops, Side Ops and Mission Steps each carry an explicit previous and new figure. Those are the same three categories the October 29 update adjusted upward without figures, so the two dates together describe a two-step rise rather than one.

The Multiplayer section is short and entirely fixes, but two of the entries name a specific map and a specific mode, which makes them more useful than a generic crash fix: exploits were closed on Coal, and the premature inactivity kick applied to Search and Destroy.

October 30, 2026

A Multiplayer and DMZ fix update. Infected joined the rotation for Halloween weekend. See the playlists page for the current playlist list and the multiplayer modes page for the published rules.

PLAYLIST

• Infected (NEW) — Halloween Party Mode. Infinity Ward’s announcement: “Glad to see everyone enjoying Possession! We’ve got one more for you. Infected joins the playlist for Halloween weekend!”

Infected is a returning mode, and the Season 1 announcement publishes its rules. It is Survivors versus the Infected, a team-based party mode where one player is randomly assigned to the Infected team at the start of the match. Every Survivor the Infected player eliminates joins the swarm, so the Infected side grows through eliminations rather than starting at full strength. Infected players are built for speed and stealth, carrying the FSS Carbon Edge Combat Knife, a Throwing Knife and the Ninja Perk for shambling sneak attacks. Survivors carry heavier armaments — the Rezi 12 Shotgun with hot-loaded explosive slugs through the Enforcer Apex Attachment, plus Trip Wire and a Concussion Grenade. In infect everyone or survive the game to win.

The announcement gives no round count, no score limit and no time limit for Infected. The mode’s presence in the playlist on October 30 is confirmed by the patch notes, and the announcement dates it to the same pre-season day, so the two sources agree on when it arrived.

GLOBAL

Stability

• Fixed various issues that could cause servers to crash during gameplay.

UI/UX

• On PC, Platinum Camo progress for Marksman Rifles was not displaying correctly.
• Calling Card Challenges in the Multiplayer Lobby displayed the reward name instead of the challenge name.

MULTIPLAYER

• Players could encounter a black screen after switching teams using auto-assign while waiting for a Private Match to start.
• Some players could be kicked for inactivity prematurely in Search and Destroy.
• Fixed exploits on Coal.

The Coal entry is worth separating from the ordinary bug list. A tac map publishes where a map’s objectives and named locations are; it does not publish where the geometry can be abused. The Coal map guide lists its six named points of interest and five Hardpoint objectives, and none of that describes the exploit that was closed on October 30 — the source does not say what the exploit was, which line or structure it used, or how it was fixed. A map page built from a tac map cannot answer those questions, and this wiki does not guess at them.

DMZ

Cash rewards were adjusted across DMZ, and the published figures are:

Source of cash	Before	After
Dynamic Ops	5,000–10,000	10,000–20,000
Side Ops	500	2,000
Mission Steps	300 per completed step	500 per completed step

These are publisher figures, not measured values. The Dynamic Ops band doubled at both ends, the Side Ops reward quadrupled, and the per-step figure rose by 200. The source does not publish a Cash figure for Story Mission replays here, which is the third category the October 29 update adjusted without numbers. It also publishes no price for what DMZ Cash buys in the FOB Gunsmith or from the FOB Vendor, so the change cannot be turned into a meaningful comparison on its own.

The rest of the DMZ section is fixes:

• In the Broken Resupply Dynamic Op, the required mission item could be missing from the marked vehicle’s trunk.
• Players sometimes could not purchase Intel from the Boss Board, which prevented progress on the Information Power Order.
• In the Hunt Operator Dynamic Op, the mission timer was missing and objective text incorrectly appeared on the in-world marker.
• The icon shown when hitting but not breaking a helmet was white instead of blue, which is the signal for armour damage.
• Shadows in the FOB could shift suddenly as players moved around.
• Fixed a crash in the FOB related to spamming knife attacks.

Two of these name Dynamic Ops by name, which is a useful signal about where the mode’s attention was directed in the launch week. The Broken Resupply and Hunt Operator fixes are about a required item being missing from its marked location and a mission timer not appearing, both of which blocked progress through a contracted objective rather than merely looking wrong.

RECENTLY UPDATED

Infinity Ward directs players to its live issue tracker and CODUpdates for the latest news on outstanding problems.

Sources

• Infinity Ward: MW4 launch patch notes, October 30, 2026 section, checked November 1, 2026.
• Activision Season 1 announcement — the published Infected rules and its pre-season date.
• MW4 DMZ guide for the DMZ economy and how it differs from Multiplayer progression.
• November 5-7 Season 1 notes — the Season 1 launch and the two following days.