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MW4 DMZ Early Access Patch Notes October 20, 2026

@CODUpdates
ENGLISHOct 21, 2026
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TL;DR

Official patch notes for Modern Warfare 4 DMZ Early Access released on October 20, 2026, detailing numerous bug fixes for crashes, XP tracking, AI behavior, and specific mission blockers.

Patch Notes are available for a Modern Warfare 4 Campaign and DMZ Early Access update.

DMZ Bug Fixes

  • 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.

Campaign Bug Fixes

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

Launch Patch Notes for Modern Warfare 4 will be available tomorrow on CallofDuty.com/patchnotes

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