Quick answer (TL;DR): Call of Duty: Modern Warfare 4 launches Friday, October 23, 2026, with Campaign Early Access on Friday, October 16, 2026 for digital pre-orders (callofduty.com, Xbox). Activision hasn't published MW4's exact preload date or download size yet — but based on the last two Call of Duty launches, expect preload to open roughly 2–4 days before each unlock, a 9:00 AM PT preload start, and a launcher that will eat 100–200 GB of disk because it shares the Call of Duty HQ install with Warzone. Free up at least 200 GB now and you'll be ready. This guide separates what's confirmed from what's expected, so you preload once and load in on time.
Call of Duty launches are a storage ambush. Every year players wake up on release day, hit "play," and discover a 150 GB download standing between them and the servers — then spend launch night watching a progress bar instead of the killcam. With MW4's dual-unlock structure (campaign a week early, then the full launch), there are two windows to get wrong.
This is the pre-launch prep guide: exactly when to preload, how much space to clear, and how the modular Call of Duty install works — with every unconfirmed detail clearly labeled as an estimate, not a leak.
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When does Modern Warfare 4 unlock? (Confirmed dates)
Two dates are locked and Activision-official:
| Milestone | Date | Who gets it |
|---|---|---|
| Campaign Early Access | Friday, October 16, 2026 | Digital pre-orders only |
| Full launch (Multiplayer, DMZ, full campaign) | Friday, October 23, 2026 | Everyone |
| Modern Warfare 4 is confirmed for **PlayStation 5, Xbox Series X\ | S, Xbox on PC, PC (Battle.net & Steam), and Nintendo Switch 2 (support.activision.com/mw4). The Standard Edition ($69.99) unlocks everything on October 23; only digital pre-orders** get the October 16 campaign head start — physical discs do not include early access. For the full breakdown of what each tier includes, see our MW4 editions & pre-order bonuses guide and the campaign early access explainer. |
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One confirmed caveat that catches people every year: Activision states you'll "need a continuous internet connection to play Multiplayer... and DMZ" (Activision Support). Preloading the files early does not mean you can play offline before the unlock timer flips — the servers gate the mode, not your download.
When can you preload Modern Warfare 4? (Expected)
Not yet confirmed by Activision. But the pattern across the last two Call of Duty titles is consistent enough to plan around — treat the following as an estimate based on precedent, not an announced date:
- Black Ops 6 (2024): preload opened October 21 at 9:00 AM PT / 11:00 AM CT / 12:00 PM ET, roughly 4 days before the October 25 launch, on all platforms at once.
- Modern Warfare 3 (2023): campaign early-access files preloaded ~48 hours before the early-access unlock, with the multiplayer/DMZ layer preloading again before the full launch.
Applied to MW4's calendar, the realistic expectation is:
| Preload window (expected) | For | Likely opens |
|---|---|---|
| Campaign Early Access preload | Digital pre-orders | ~Oct 14, 2026 (≈2 days before Oct 16) |
| Full-game preload (MP + DMZ) | Everyone | ~Oct 21, 2026 (≈2 days before Oct 23) |
Expect the preload button to appear in the morning Pacific time, since that's when Activision has flipped it the last two years. We'll update this page the moment the official preload intel blog drops on callofduty.com.
How big is the Modern Warfare 4 download? (File size expectations)
Activision hasn't published MW4's install size — but here's the hard data from the last two launches, which is the best predictor you have right now:
- Modern Warfare 3 (2023): required 149 GB on Steam, or about 78 GB of additional space if Call of Duty HQ was already installed (PlayStation LifeStyle). The full PS5 install ran roughly 140 GB.
- Black Ops 6 (2024): PC download was about 102 GB, with Activision recommending you free up to ~148 GB of headroom during install.
Why so massive? Modern Call of Duty games don't install as one standalone title. They bolt onto the shared Call of Duty HQ launcher — the same hub that runs Warzone and the previous year's game — so a chunk of the footprint is shared assets you may already have. That's also why "78 GB extra if you already have CoD HQ" and "149 GB from scratch" can both be true for the same game.
Realistic MW4 planning number: clear at least 200 GB of fast storage (SSD). Call of Duty file sizes have crept upward every cycle, and MW4 folds in a new campaign, multiplayer, DMZ, and Warzone integration. If you're on PC, an SSD isn't optional — the MW4 system requirements list SSD storage as mandatory, same as the last two entries.
Space-saving tip: the install is modular. Call of Duty HQ, the campaign, multiplayer, and DMZ each download as separate packs, and you can deselect the ones you don't want (e.g. skip the campaign pack if you're multiplayer-only) to reclaim tens of gigabytes.
What time does Modern Warfare 4 go live in your region?
Call of Duty uses staggered, region-based unlocks rather than one global flip. Based on the BO6 and MW3 rollouts, expect:
| - **Console (PS5 / Xbox Series X\ | S / Switch 2): unlocks at midnight local time** in most regions — so your download needs to be finished before midnight on the 22nd (full launch) or 15th (early access). |
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- PC (Steam & Battle.net): historically unlocks on a set global time tied to Pacific/Eastern rather than local midnight — for BO6 that landed around 9:00 PM PT the night before the calendar launch date. Double-check your storefront's countdown timer closer to launch.
The practical takeaway is the same either way: finish preloading a full day early. A day-one patch almost always lands right at unlock, and if you're still downloading the base game when it drops, you're stacking two waits on top of each other.
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How to be ready for launch (checklist)
- Pre-order digitally if you want the October 16 campaign week — physical copies are locked out of early access. (Bonuses: Open Beta Early Access + the Hunter Killer Operator skin.)
- Free up 200 GB of SSD space this week. Uninstall something now; don't scramble on launch night.
- Watch for the preload button around Oct 14 (early access) and Oct 21 (full launch), in the morning Pacific time.
- Preload fully, then verify — check the install actually completed (not "paused at 99%") the day before unlock.
- Leave headroom for the day-one patch, which typically drops at unlock and can be 10–30 GB on its own.
MW4 isn't playable yet — get match-ready in Warzone & BO7 now
You can't grind MW4 before October, but you can walk in already sharp instead of starting from zero. While you wait for the download, get set up in the live Call of Duty ecosystem so day one is about playing, not catching up:
Skip the grind and hit the ground running when MW4 drops:
- CoD & Warzone Bot Lobbies — warm up your aim and level weapons in low-pressure lobbies.
- BO7 Account & Weapon Leveling — bank levels and unlocks now so you're not starting at square one.
- Mastery Camo Unlocks — get the gold/Dark Matter grind handled.
- Warzone Ranked Boost — climb Ranked while MW4's competitive playlist spins up.
Everything runs on the live BO7/Warzone services — there's no MW4 product yet, and we'll never pretend otherwise. Curious how much will carry forward? Our MW4 crossplay & cross-progression guide and Warzone integration breakdown cover exactly what transfers.
Frequently Asked Questions
When can I preload Modern Warfare 4? Activision hasn't confirmed a preload date yet. Based on the last two Call of Duty launches, expect preload to open roughly 2–4 days before each unlock — likely around October 14 for the campaign early access and October 21 for the full October 23 launch, opening in the morning Pacific time. We'll update this page when the official date is announced.
How big is the Modern Warfare 4 file size? Not officially confirmed. For reference, Modern Warfare 3 (2023) needed about 149 GB on Steam (or ~78 GB extra if Call of Duty HQ was already installed), and Black Ops 6 (2024) was around 102 GB on PC. Plan to free up at least 200 GB of SSD space, since MW4 shares the Call of Duty HQ install with Warzone.
What time does Modern Warfare 4 unlock? The full game launches October 23, 2026, and campaign early access opens October 16 for digital pre-orders. Consoles typically unlock at midnight local time, while PC (Steam/Battle.net) usually unlocks on a set Pacific-time schedule. Check your storefront's countdown closer to launch for your exact time.
Do I need to pre-order to play the campaign early? Yes. Only digital pre-orders get the October 16 Campaign Early Access. Physical disc copies do not include early access and unlock with everyone on October 23.
Can I play Modern Warfare 4 offline once it's preloaded? No. Preloading only downloads the files early — it doesn't unlock the game before the timer. Activision also requires a continuous internet connection for Multiplayer and DMZ, so you'll need to be online at launch regardless.
Can I delete parts of the game to save space? Yes. The install is modular — Call of Duty HQ, campaign, multiplayer, and DMZ download as separate packs, so you can deselect or later uninstall the modes you don't play to reclaim disk space.
