MW4 Server Status at Launch: Known Issues and Error Fixes

Updated October 25, 2026, 00:30 UTC: MW4 servers are still up with no official outage. At 00:28 UTC Activision’s Online Services page showed no Modern Warfare 4 alert on any platform. We added two error codes players are searching for, LIVORNO – NAVAJO and DirectX error 0x887A0005. Activision hasn’t published an MW4 article on either, so we list its official steps and mark community fixes as community fixes. We also added the newest known issues from Infinity Ward: Xbox and PS5 lobby hitching, a DMZ Dog Tag network error on PC and the Patriot XMR Platinum challenge. The camo relock bug is now listed as fixed in the October 23 patch.

Earlier updates (October 23): at 16:25 UTC we added @CallofDuty’s Secure Attestation Wizard note plus the AMD and Lenovo TPM fixes. At 05:37 UTC, after the US and Steam unlocks, we added the DMZ Operator Prestige workaround. First check: 02:30 UTC.

Call of Duty: Modern Warfare 4 has been live in every region since October 23, and the MW4 servers are up. Activision’s Online Services status page showed no active alert for Modern Warfare 4 on any platform when we checked at 00:28 UTC on October 25. Infinity Ward’s latest post on @CODUpdates (October 24, 18:52 UTC) was good news: it fixed a Multiplayer bug that showed some player models in static or wrong animations.

The full game unlocked at midnight local time from 11:00 UTC on October 22 (New Zealand first); the US and Canada followed at 04:00 UTC on October 23 and Steam at 05:00 UTC. Our MW4 release time by region table has every market.

Modern Warfare 4 operators advancing through a smoky city street past blue water barrels in multiplayer

MW4 multiplayer has been live in every region since October 23. Image: Activision

Table of Contents

Is MW4 down right now? Server status

Source	What it says	Checked (UTC)
Activision Online Services	No active Modern Warfare 4 alerts on any platform	Oct 25, 00:28 (earlier Oct 23: 16:25, 05:36, 02:24)
@CODUpdates (Infinity Ward)	No outage posts. Latest: player-model animation bug fixed (Oct 24, 18:52); lobby map animation disabled on all platforms to fix hitching (Oct 24, 01:01)	Oct 25, 00:29
@CallofDuty	No outage notice; Double XP event live until October 26, 10 AM PT	Oct 25, 00:30
MW4 Trello board	Known issues listed, no outage. Newest card Oct 24, 22:37 (DMZ Dog Tag network error on PC)	Oct 25, 00:29

If the status page turns red or shows an alert for your platform, the problem is on Activision’s side. Its MW4 connection guide says you may have trouble connecting until service is restored, so waiting is the fix. Check the Xbox, PSN and Nintendo status pages too.

Known MW4 launch issues Activision is tracking

Activision’s Known Issues page (dated October 23 when we checked at 00:29 UTC on October 25) and the Trello board list these:

Can’t save Loadouts in Multiplayer (all platforms): under investigation.
Stats missing from the Combat Record and Leaderboards: Activision says this is a display issue only and stats are still tracked.
No button to launch Campaign or DMZ on Xbox on PC: Activision says to install “Content Pack 1” first and check that your Microsoft account hasn’t reached its 10-device limit. The same device limit can lock some Xbox Series X|S players out of the game.
“Update Requires Restart” prompts caused by connection timeouts: fix planned for an upcoming patch.
Military camos and Apex attachments relocking after you prestige a weapon: the October 23 update notes list this as fixed, although the Trello card is still open. Our MW4 Prestige guide has the details.
Hitching while searching for a lobby on Xbox and PS5: Infinity Ward has turned off the regional map animation in Multiplayer matchmaking on all platforms as a possible fix.
Network error in DMZ when you extract with a looted Dog Tag on PC: new DMZ known issue (October 24), no workaround posted.
Patriot XMR Platinum challenge won’t unlock after you meet the Gold camo requirements: under investigation.
Sprint or Melee doesn’t cancel ADS with Toggle ADS on: Infinity Ward says the fix slipped from launch to Season 1.
Can’t Prestige an Operator in DMZ (all platforms): under investigation. Activision’s workaround is to equip Rare (blue) weapons with only three attachment slots, meaning weapons that have never had four or more attachments.
DLSS is unavailable while ray tracing is on on PC. Infinity Ward suggests SMAA Nx with Variable Rate Shading until a fix arrives.

MW4 error codes and fixes (from Activision support)

PC: “system does not meet the security requirements” (TPM 2.0 and Secure Boot)

This is the big one for PC. Activision’s TPM 2.0 and Secure Boot article says both are required for MW4, and PCs that fail the check are “restricted from playing any online game mode.” Activision’s fix steps:

Run Windows 11, or Windows 10 version 22H2 or later.
Turn on TPM 2.0 in the BIOS: Intel PTT (8th Gen or newer), AMD fTPM (Ryzen 2000 series or newer), or a discrete TPM chip.
Set the BIOS boot mode to UEFI (not Legacy), use a GPT disk (not MBR), then enable Secure Boot.
Run the latest Call of Duty Secure Attestation Wizard (the support page listed version 1.3.0, dated October 21, at 16:24 UTC; @CallofDuty said on October 23 that the wizard had just been updated). It names the failing item, such as “TPM 2.0: Not Enabled”, “Boot Partition not set to GPT” or “BIOS Firmware Update Required”.
If TPM is on and the prompt persists, update your motherboard BIOS.
AMD PCs: open tpm.msc and check the Manufacturer Version. Activision says versions in the form 3.*.0.* (for example 3.92.0.5) are not compatible and need a firmware update from your motherboard maker; 3.92.5.5 is fine. This can also make the enrollaik.exe Windows prompt keep coming back after you click Yes.
Lenovo PCs: if attestation still fails, Activision says to contact Lenovo Support, which provides the BIOS update directly rather than as a public download.

Our MW4 early access and preload guide covers the rest of the PC setup.

Modern Warfare 4 squad firing from cover in a forest firefight, an online mode that needs TPM 2.0 on PC

On PC, every online mode needs TPM 2.0 and Secure Boot. Image: Activision

PS5: CE-34878-0

Activision’s MW4 crash article lists CE-34878-0 and “An error has occurred with an application or system software” as PS5 crash messages. Restart the game first. If it keeps happening, update the PS5 system software, keep the console somewhere cool and well ventilated, and delete old files to free up space.

Can’t connect, but servers are green

Activision’s steps: use wired Ethernet, check you’re signed in to Xbox, PSN, Nintendo, Steam or Battle.net, and run your console’s network test. Restart your router and pause other downloads or streams. Then try UPnP, or port forwarding with a static IP if UPnP doesn’t help.

MW4 error LIVORNO – NAVAJO

LIVORNO – NAVAJO is one of Call of Duty’s two-word error names. Players hit it when connecting to online services, and players also reported it in Black Ops 6. When we checked at 00:30 UTC on October 25, Activision had not published an article on it, and it wasn’t on the MW4 Known Issues page, the Trello board or @CODUpdates. That means there is no official explanation of what it means.

Official steps (Activision’s MW4 connection guide):

Check the Online Services page first. If your platform has an alert, wait for the fix.
Make sure you’re signed in to Xbox, PSN, Nintendo, Steam or Battle.net, and check that platform’s status page.
Use wired Ethernet, restart your router and pause other downloads or streams.
Try UPnP, then port forwarding if UPnP doesn’t help.

Community fixes (not from Activision): PC fix guides such as this one describe LIVORNO – NAVAJO as a failed secure connection to the matchmaking servers. They suggest syncing the Windows clock, closing any VPN and allowing the game through Windows Defender Firewall. These steps are harmless to try, but Activision hasn’t confirmed any of them.

PC: DirectX error 0x887A0005

0x887A0005 is a Windows error code, not one Activision invented. Microsoft’s DXGI error list names it DXGI_ERROR_DEVICE_REMOVED, which means the game lost access to the graphics card, for example after the GPU driver was updated or reset. Players reported the same code in earlier Call of Duty games, usually alongside a graphics driver crash. Activision has no MW4 article for this code, but its own support pages cover the official steps:

Install the recommended MW4 graphics drivers from Activision’s driver page: AMD 26.7.1, NVIDIA 616.56, Intel 32.0.101.8974 (as listed at 00:30 UTC on October 25).
Keep Windows 10 or 11 up to date and install the latest DirectX (Activision’s DirectX errors article).
Close background apps. Activision’s MW4 crash article warns that overlays, input remapping and recording software can break the game even when they aren’t running, so uninstall them if crashes persist. Infinity Ward’s Trello also lists NVIDIA ShadowPlay as a cause of hitching on some PCs.
If the crash keeps happening, send it in with Activision’s Call of Duty PC Crash Report, which is linked from the Known Issues page.

Community fixes (not from Activision): players and PC guides also suggest scanning and repairing the game files in Steam or Battle.net, undoing GPU overclocks, and turning off NVIDIA Ansel, MSI Afterburner and the Discord overlay. Settings help is in our MW4 best settings guide.

What about HUENEME-NEGEV, DIVER and other named codes?

Some guide sites list names like HUENEME-NEGEV for MW4, but those codes come from earlier Call of Duty games. When we checked again at 00:30 UTC on October 25, none of them (and not LIVORNO – NAVAJO either) appeared on Activision’s MW4 support pages or the Trello board. If you see a code Activision hasn’t documented, the connection steps above are the official route, and you can report it through Activision’s MW4 bug report form.

What’s next

MW4 has made it through launch day and the first Saturday without an official outage notice. The next busy stretch is the Double XP event, which @CallofDuty says ends October 26 at 10 AM PT (17:00 UTC). Infinity Ward’s October 23 notes promise more updates and Multiplayer patch notes “over the coming days”, with weapon tuning possible next week. Shipment arrives October 27, and Season 1 follows (see our MW4 Season 1 roadmap). We’ll keep updating this post with new status checks and any official fixes, including for LIVORNO – NAVAJO and 0x887A0005. For builds that suit the current meta, see our MW4 best loadouts.

Sources: Activision Online Services, Activision Support: Known Issues in MW4, Activision Support: TPM 2.0 and Secure Boot, Activision Support: Crashes or Game Freezes in MW4, Activision Support: Connecting to MW4, Activision Support: Updating Video Card Drivers, Activision Support: DirectX Errors, MW4 launch patch notes, Microsoft: DXGI_ERROR, @CODUpdates, @CallofDuty, Infinity Ward Trello.