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Call of Duty: Modern Warfare 4Call of Duty: Modern Warfare 4 · PC · version Early access (Campaign)

Campaign and DMZ won't launch on Xbox PC

ConfirmedUnpatched

Updated

On the Xbox app for PC, Campaign Early Access shows as not installed and will not start, while the same account plays fine on console. A server-side fix on October 16 only helped some players and a second went live on October 19, yet players were still reporting it the next day. Activision Support's known-issues page, re-dated October 22, still lists it as under investigation and says DMZ can be blocked too; its tips are to install Content Pack 1 and check the Microsoft Store 10-device limit.

Lifecycle

Acknowledged · stage 3 of 5

13days open

Since first report

  1. Reported (reached)
  2. Confirmed (reached)—
  3. Acknowledged (reached) · now
  4. Partial (not yet)next
  5. Patched (not yet)—
Report → ack 0dIn current stage 13d
Workaround none yet
Game
Call of Duty: Modern Warfare 4
Platform
PC
Affected version
Early access (Campaign)
Kind
Bug
Confirmation
Confirmed
Patch status
Unpatched
First reported
Last updated
Latest fix or workaround
Fix, : Says the issue is resolved and affected players can restart Call of Duty to play. Source
How we label issues

Kind

  • Exploit: Repeatable and clearly advantageous to the player using it; essentially cheating.
  • Bug: Everything else: crashes, launch errors, broken features, visual or audio faults.

Confirmation

  • Confirmed: A developer or official account acknowledged it, an official known-issues board lists it, it appears in official patch notes, or 100+ corroborating posts on X were actually counted.
  • Unconfirmed: None of the above yet. Press articles are reports and never confirm an issue on their own.

Patch status

  • Unpatched: Known and open; no fix has been claimed.
  • Reported as unpatched: Players credibly report it persisting, including after a fix claim that never appeared in patch notes.
  • Partially patched: Official patch notes list a fix, but credible later reports say it still happens, or the notes only cover part of it.
  • Reported as patched: A developer, official account or player says it is fixed, but no official patch notes list it.
  • Patched: Official patch notes (a Steam news post or the publisher's patch notes page) list the fix, and nothing credible says it still happens.

Active means still affecting players: Unpatched, Reported as unpatched or Partially patched. Patched and Reported as patched issues are closed.

Estimated impact runs from 0.1 to 9.9 with one decimal. xploitr sets it from the rubric below. Factors: advantage to other players, reach, play blocked or progress lost, frequency, and whether a reliable workaround exists. Patched issues keep their historical impact.

Signed-in community members can report new issues and suggest status changes, such as Fixed or Still unpatched, with their platform, version and a source. Every report and suggestion is reviewed by an editor before anything on the record changes. A new issue is published only when the report has at least three independent sources (distinct accounts, or distinct sites for web pages, after blocked sources are removed), unless the owner approved that issue by hand. Approved input appears as a dated Update from the xploitr community source on the issue's timeline, credited to the member's username (reports can opt out and stay anonymous); nothing is counted or published automatically.

Impact bands

  • 0.1–2.9 Low: Cosmetic, audio, text and UI glitches with no effect on play.
  • 3.0–4.9 Moderate: Narrow gameplay bugs or small exploits, rare or with a workaround.
  • 5.0–6.9 Elevated: Bugs most players in a mode notice: hit registration, desync, balance-breaking damage.
  • 7.0–8.4 High: Widely abused competitive or economy exploits; crashes many players hit.
  • 8.5–9.9 Severe: Launch blockers, widespread progress or item loss, exploits that break the game for everyone.

Each issue has a dated timeline of updates (report, acknowledgement, announcement, fix, workaround). Update summaries are our own words; quotes and excerpts are the source's words, or our English translation when marked.

Estimated impactEstimated impact 8.0 out of 9.9, HighOur estimate from how many players it reaches and what it costs them.

Updates · 10

Show all 10 updates
  1. Announcement

    Trello card: the first fix only unblocked some players. An additional server-side fix has gone live and the card is marked Fix Released and Monitoring.

    Infinity Ward on Trello ·
    “Update: An additional sever-side fix has gone live to further address players who may have been in a state where they were unable to access Campaign Early access. We are now marking this card as Fix Released and Monitoring.”
    Infinity Ward on Trello · Open source
  2. Report

    Replying to the fix announcement on October 20: still not working.

    @hesse_noa on X ·

    @hesse_noa on X · · View post

  3. Report

    Oct 22: an Xbox PC App Vault pre-order played Campaign but can't launch DMZ Early Access.

    @justRea81012045 on X ·

    @justRea81012045 on X · · View post

  4. Acknowledged

    Activision Support's known-issues page (dated October 22) lists the Xbox on PC problem as under investigation and says it can block DMZ as well as Campaign. Its tips: install Content Pack 1 first and check the Microsoft Store 10-device limit.

    Activision Support on Activision Support ·
    Activision Support on Activision Support · Open source
  5. Announcement

    Related Trello board note: some Xbox Series X|S and Xbox PC players may be unable to access MW4 because their account has reached its device limit.

    Infinity Ward on Trello ·
    “Some XBOX Series X|S and XBOX PC players may be unable to access Modern Warfare 4 due to reaching their account device limit.”
    Infinity Ward on Trello · Open source
Sources · 105 Official5 Community@CODUpdatesOfficial+ 5 similar community reports and 4 official postsHide
Call of Duty UpdatesOfficial@CODUpdates
“❗️ Call of Duty: #ModernWarfare4 We are investigating reports that some players on Xbox PC are unable to play Campaign Early Access. Details:”
  • @CODUpdatesOfficialView post
    “🛠️ Call of Duty: #ModernWarfare4 We have resolved an issue that prevented some players on XBOX PC from accessing Campaign Early Access. Players who previously were impacted by this issue can restart Call of Duty to launch and play.”
  • Infinity Ward · TrelloOfficialOpen
    “Update: An additional sever-side fix has gone live to further address players who may have been in a state where they were unable to access Campaign Early access. We are now marking this card as Fix Released and Monitoring.”
  • Activision Support · Activision SupportOfficialOpen

    Activision Support's known-issues page (dated October 22) lists the Xbox on PC problem as under investigation and says it can block DMZ as well as Campaign. Its tips: install Content Pack 1 first and check the Microsoft Store 10-device limit. (Our summary of this source, not the author’s words.)

  • @compleckzzView post
    “@CODUpdates FIX IT! Its still not working on the Xbox PC App, i can play on console but not on the Pc.”
  • @justRea81012045View post
    “@CallofDutyCM I preordered the MW4 Vault Edition on the Xbox PC App, played through the campaign without issue, but can't even launch the game to play the DMZ early access. I reinstalled the game last night to try and fix it, but nothing. This is all I see, what should I do?”
  • @SinperzGod0View post
    “@XBOX @CallofDuty Modern warfare 4 can’t launch early access campaign for Xbox on PC I install campaign and when I jump on, I’m stuck on the headquarters saying not install please fix. Wanna play the game”
  • @Misfitza1719View post
    “@CODUpdates Still not working on PC through Xbox!”
  • @hesse_noaView post
    “@CODUpdates Still not working! 20-10-2026”
  • Infinity Ward · TrelloOfficialOpen
    “Some XBOX Series X|S and XBOX PC players may be unable to access Modern Warfare 4 due to reaching their account device limit.”
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