Anti-cheat authentication (4) error
The client is not running the anti-cheat, or has failed the anti-cheat authentication (4) Im using steam Every time I try and join a game regardless of type or sometimes even just get to the lobby I consistently get kicked with this error. It happen after the update on Sep 29, 2026. Its is very frustrating since I paid for the battle pass and cannot continue to play matches anymore due to the error, I feel like im wasting my money and timeJavelin Anti-Cheat Error CHEAT AUTHENTICATION [4] cant enter games SteamWin11
Issue Summary: The game launches successfully and reaches the main menu. However, the moment I attempt to connect to any session (Firing Range, Unranked Trios, etc.), I am returned to the main menu with the error: "The client is not running the anti-cheat, or has failed the anti-cheat authentication. [4]" System Specifications: Platform: Steam OS: Windows 11 (Latest updates installed) GPU: Nvidia (Drivers updated to the latest version) TPM 2.0: Confirmed enabled and ready. Secure Boot: Confirmed enabled via msinfo32. Extensive Troubleshooting Already Completed (All Failed): Confirmed TPM 2.0 and Secure Boot are active in BIOS/UEFI. Toggled Windows Memory Integrity (Core Isolation) off and on. Completely uninstalled and reinstalled EA Javelin Anti-Cheat via the official installer (multiple times). Verified the integrity of game files via Steam. Ran Steam, Apex Legends, and the Javelin Installer as Administrator. Toggled Windows Virtualization features (WSL, Virtual Machine Platform, Hypervisor Platform) off and on. Disabled Hyper-V completely via Command Prompt (bcdedit /set hypervisorlaunchtype off). Uninstalled VirtualBox and ensured Docker Desktop is fully stopped and closed. Disabled all background applications (Malwarebytes, MSI Afterburner rivatuner malwarebytes discord steelseries sonar). Cleared the EA App localappdata cache files. Confirmed no virtual drives are mounted or running. Flushed DNS via Command Prompt (ipconfig /flushdns). Tested on a mobile hotspot to rule out local network/ISP issues. Confirmed no RivaTuner or RTSS is installed on the system. Checked for and removed any leftover dxgi.dll or version.dll files from the game directory. Ended all residual ACE/AntiCheat background processes via Task Manager. so whats left uninstall and reinstall? windows format? idk how it can break post new anti cheat when i did nothing changed nothing updated and suddenly unable to escape this issue
EA Javelin Anti-Cheat Error [4] and [1] — Cannot Enter Any Game Session
Bug Description Since October 18, 2026, I've been experiencing an anti-cheat issue in Apex Legends. The game was working perfectly fine on October 17, and the problem started suddenly the following day. I'm playing Apex Legends through Steam. The game launches successfully and reaches the main menu. However, the moment I attempt to connect to any session (Firing Range, Unranked Trios, etc.), I'm returned to the main menu with the following error: The client is not running the anti-cheat, or has failed the anti-cheat authentication. [4] I've also encountered a second error during my troubleshooting attempts: The client failed an anti-cheat runtime integrity check. [1] Extensive Troubleshooting Already Completed Unfortunately, none of the following steps resolved the issue: Completely uninstalled and reinstalled Apex Legends. Verified the integrity of the game files through Steam. Completely uninstalled and reinstalled EA Javelin Anti-Cheat using the official installer multiple times. Ran Steam, Apex Legends, and the Javelin Anti-Cheat installer as Administrator. Ended all residual ACE/AntiCheat background processes through Task Manager. Additional Information This issue started suddenly despite the game working normally the previous day. I've already completed extensive troubleshooting, including reinstalling both the game and EA Javelin Anti-Cheat, without success. I've attached screenshots of both error messages. Could an EA representative please investigate this issue? I'd appreciate confirmation of whether this is a known problem and any additional troubleshooting steps that could resolve it. Thank you.Unable to Play Apex Legends Due to Javelin Anti-Cheat Authentication Failure
Bug Description Since October 18, 2026, I've been experiencing an anti-cheat issue in Apex Legends. The game was working perfectly fine on October 17, and the problem started suddenly the following day. I'm playing Apex Legends through Steam. The game launches successfully and reaches the main menu. However, the moment I attempt to connect to any session (Firing Range, Unranked Trios, etc.), I'm returned to the main menu with the following error: The client is not running the anti-cheat, or has failed the anti-cheat authentication. [4] I've also encountered a second error during my troubleshooting attempts: The client failed an anti-cheat runtime integrity check. [1] Extensive Troubleshooting Already Completed Unfortunately, none of the following steps resolved the issue: Completely uninstalled and reinstalled Apex Legends. Verified the integrity of the game files through Steam. Completely uninstalled and reinstalled EA Javelin Anti-Cheat using the official installer multiple times. Ran Steam, Apex Legends, and the Javelin Anti-Cheat installer as Administrator. Ended all residual ACE/AntiCheat background processes through Task Manager. Additional Information This issue started suddenly despite the game working normally the previous day. I've already completed extensive troubleshooting, including reinstalling both the game and EA Javelin Anti-Cheat, without success. I've attached screenshots of both error messages. Could an EA representative please investigate this issue? I'd appreciate confirmation of whether this is a known problem and any additional troubleshooting steps that could resolve it. Thank you.lobby crash or server crash.
Every now and then when i’m playing ranked, mind you i’m diamond 2 I’ll get into a game with 2 predators and then in the middle of the game my whole team freezes and gets kicked. When we try and reconnect it says the game has been ended and yet we lose over 100 RP and get the abandoned match penalty.. I’m not sure if we’re being kicked on purpose but it needs to be fixed!Apex Legends 无法启动：EA Javelin Anticheat 报错 ( 7 ) ( 1 ) (9.30-10.18)
报错如下： EA Javelin Anticheat 服务遇到错误。请重新启动您的 PC。: C:\Program Files\EA\AC\EAAntiCheat.GameService.exe ( 7 ) ( 1 ) Session ID: 0y03A3bqvOfxitu64M3KT3xpruLpg6cm3HTEZra6SGgYWH6e Previous Session ID: gyo8BCDlvLvx3dros83KS60PIhKI5YyogvR5WTuROa5l3jD3 Previous Service Session ID: n/a 系统：Windows 11 家庭中文版 26H2 最新 游戏：Steam，AppID 1172470，buildid **25682878**（2026-10-11 更新），安装于 C:\STEAM\steamapps\common\Apex Legends 已尝试方法：重启电脑，重装APEX，重装JAVELIN，卸载所有影响内核驱动的软件（clash，火绒，雷神加速器等），关闭了防火墙，windows defender，内核隔离，但全都无效。安全启动启用或关闭也都无效 附件里有使用deepseek修复得到的详细日志，当然，没有修复成功 只知道是反作弊程序卡在了验证自身签名那一步，于是崩溃。 从9.30日（反作弊更换为JAVELIN后）开始就一直出现相同的报错。Apex Legends 无法启动：Javelin Anticheat 报错 ( 7 ) ( 1 )（from 9.30 to 10.18） --Steam
Apex Legends will not start — EA Javelin Anticheat error ( 7 ) ( 1 ) 一直卡在反作弊程序验证自身签名失败这一步，进而报错(7) (1) EA Javelin Anticheat 服务遇到错误。请重新启动您的 PC。: C:\Program Files\EA\AC\EAAntiCheat.GameService.exe ( 7 ) ( 1 ) Session ID: gyo8BCDlvLvx3dros83KS60PIhKI5YyogvR5WTuROa5l3jD3 Previous Session ID: 0SpiUifq6+Xxidzuts3KSsZaOzGULpqw87aSaDC7hpdFevjK Previous Service Session ID: n/a 已尝试的**bleep**作：重启电脑，重装apex，重装JAVELIN反作弊，验证游戏文件完整性，更新系统，修复游戏运行库，更改安全启动选项（开/关），卸载所有影响内核驱动的软件（CLASH、火绒、雷神加速器等）。但都无效。 详细报告在附件压缩包中 > For: EA Support / Apex Legends Technical Issues forum > Date: 2026-10-18 (Asia/Shanghai) > Evidence attached: 01-javelin-events.txt, 02-ac-binaries.txt, 03-system.txt, 04-timeline.txt ## 1. Summary Apex Legends has been completely unplayable since **2026-09-30**. Every launch from Steam ends in 10–20 s with: > EA Javelin Anticheat 服务遇到错误。请重新启动您的 PC。 > `C:\Program Files\EA\AC\EAAntiCheat.GameService.exe ( 7 ) ( 1 )` and these two Application-log events (provider "EA Javelin Anticheat", event ID 1000) every single time: ``` Failed signature validation for eaanticheat.gameservice.exe. EA Javelin Anticheat 服务遇到错误。请重新启动您的 PC。 C:\Program Files\EA\AC\EAAntiCheat.GameService.exe ( 7 ) ( 1 ) ``` 563 such events between 2026-09-30 20:20:16 and 2026-10-18 11:56:55. **The file that "fails signature validation" is a genuine, unmodified, EA-signed binary** — byte-identical to the copy inside EA's own installer, and WinVerifyTrust returns S_OK for it in both user and SYSTEM context (see §4). ## 2. Environment - Windows 11 Home China 26H2, 10.0.26300, UBR 9711, `BuildLabEx=26100.1.amd64fre.ge_release.240331-1435` - Acer Nitro AN515-58, i5-12500H, 15.7 GB RAM, TPM 2.0 OK - Secure Boot: **fails both enabled and disabled** - Apex: Steam AppID 1172470, buildid **25682878** (updated 2026-10-11), 87.7 GB - EA app: not installed ## 3. Typical launch (measured) ``` 11:14:16.7 EAAntiCheat.GameServiceLauncher starts 11:14:18.9 event 1000: Failed retrieving service path. 11:14:25.2 EAAntiCheat.GameService #1 (~2 s later exits silently, writes no event) 11:14:35.7 EAAntiCheat.GameService #2 11:14:36.7 event 1000: Failed signature validation for eaanticheat.gameservice.exe. 11:14:38.0 event 1000: ... ( 7 ) ( 1 ) ``` - Service instance lives ~1.9–2.5 s, writes **no other event**, no WER dump. - `C:\Windows\System32\drivers\eaanticheat.sys` is **never created** (confirmed with a 1.37 GB WPR/ETW trace — zero file-system events for it). ## 4. Key evidence ### 4.1 Binaries | File | Size | Version | SHA256 | Authenticode | |---|---|---|---|---| | EAAntiCheat.GameService.exe | 190,610,680 | 1.0.15973373.0 | B634B7652D1E2A4D… | **Valid** | | EAAntiCheat.GameService.dll | 63,172,856 | – | B0DE4818D365F6F0… | **Valid** | | EAAntiCheat.Installer.exe | 277,175,032 | 1.0.15973373.0 | D0396B7FE0331CEF… | **Valid** | Signer: `CN="Electronic Arts, Inc.", OU=EA SPEAR AntiCheat Engineering` Issuer: `CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1` Serial `09C585540F1F99E9284F817C137AC937`, valid 2025-01-22 → 2027-01-26. ### 4.2 WinVerifyTrust, user and SYSTEM, four revocation policies → 16/16 S_OK Tested `EAAntiCheat.GameService.exe`, `preloader_s.dll`, game-dir `EAAntiCheat.GameServiceLauncher.exe`, control `kernel32.dll`: no-revocation, whole-chain online revocation, cache-only, safer flag. **All returned 0x00000000.** X509Chain builds online and offline with every element OK; DigiCert CRL/OCSP endpoints reachable from this machine. ### 4.3 The launcher replaces EA's own fresh install within 5 seconds Running the installer exactly as Steam's `EAJavelinInstaller_installscript.vdf` does: ``` EAAntiCheat.Installer.exe --noui --uninstall --read-cfg --launcher-path "…\EAAntiCheat.GameServiceLauncher.exe" → exit=0 (all AC folders removed) EAAntiCheat.Installer.exe --noui --install --read-cfg → exit=0 ``` Result: `GameService.exe 190,728,952 v1.0.15918775.0`, `dll 63,785,208`, `Installer.exe 278,380,280 v1.0.15918775.0`. Then on the next game launch: ``` 11:43:16 C:\Program Files\EA\AC rewritten back to 1.0.15973373 (GameService.exe 190,610,680 / Installer.exe 277,175,032) 11:43:16 identical bytes appear in %APPDATA%\EA\AC and %APPDATA%\EA\AC\Cache\d0396b7f… 11:43:22 Failed signature validation for eaanticheat.gameservice.exe. 11:43:23 ... ( 7 ) ( 1 ) ``` Three builds tested — **all fail**: 1.0.15973373.0 (190,610,680), 1.0.15918775.0 (190,728,952), 1.0.16040717.0 (installer 280,082,168). ### 4.4 Even with the fresh build protected from replacement With 1.0.15918775 installed and `Everyone:(DENY)(D,WD,WA,WEA,WDAC)` on the two payload files (so the launcher cannot swap them): ``` 11:54:07 Failed signature validation for service. (C:\Program Files\EA\AC\eaanticheat.gameservice.exe) ``` The launcher then shows "EA Javelin Anticheat detected corrupted game files" with session IDs. ## 5. What we already tried (none of it changed anything) 1. **Steam "Verify integrity of game files" ×3** (2026-10-15 22:19, 10-18 10:37, 10-18 11:28) — each time 4–6 mismatching files (351.89 / 352.50 MB — exactly the AC files) were re-downloaded; "Fully Installed"; failure unchanged. 2. **Deep clean + full reinstall** — removed `C:\Program Files\EA\AC`, `%APPDATA%\EA\AC`, `C:\ProgramData\EAAntiCheat`, `HKLM\SOFTWARE\EA\AC`, `HKCU\Software\EA\AC`, orphan service key, and the 7 `EAAntiCheat*` files in the game folder. Unchanged. 3. **Official uninstall + install via the installer's own CLI** (exit 0 / exit 0). Unchanged. 4. **Secure Boot off and on** — same failure both ways; with it on, no CodeIntegrity 3085 events remain. 5. **Removed a leftover Procmon kernel driver** (`PROCMON25.SYS`, hidden, held by kernel until reboot via PendingFileRenameOperations). Gone after reboot; failure unchanged. 6. **Module audit of the AC processes** — 551 module records, every DLL from Microsoft / Electronic Arts / Valve. No third-party security, IME or injection modules. 7. **Network** — DigiCert CRL/OCSP reachable; Steam downloads fine (54.76 Mbps); no proxy interference. 8. **Disk / system** — 11.8 GB free on C:, 87.7 GB game, TPM 2.0 OK, clock/timezone correct. 9. **Driver** — `eaanticheat.sys` never created; no leftover driver service key. ## 6. Questions for EA 1. What exactly does `Failed signature validation for eaanticheat.gameservice.exe.` check — Authenticode, or an internal manifest/hash pin? On this machine the file's Authenticode chain, revocation and root are all valid in both user and SYSTEM context. 2. Which **EA Javelin Anticheat build** is Apex (buildid 25682878) supposed to run: 1.0.15973373 or 1.0.15918775? Why does the launcher overwrite the version installed by Steam's own package with the cached 1.0.15973373 from `%APPDATA%\EA\AC`? 3. Can you look up these session IDs? - Session ID: `jSw8CHawubLxjdy8t83KHX8FVNQYxg++I/yc5nSjxTDbi1q+` - Previous Session ID: `0HlgCSfn67Tx3Y2+583KTcNZ6Rk5KK9GimrqAaaYoQxay3w3` - Previous Service Session ID: `n/a` 4. `EAAntiCheatService` exits after ~2 s without writing any diagnostic log. Is there a verbose/verbose-service log we can enable?Pc stuck on loading screen
Alright, we've hit the wall on what we can fix from your side. It's EA Support's turn now. One last easy thing first: if you never got around to Windows Update, run it and install everything pending. If that doesn't do it, here's a ready-to-paste ticket summary so you don't have to re-explain anything: ``` Subject: Apex Legends stuck on loading screen since first install, never launched Description: Apex Legends (Steam) has never launched successfully on this PC. Every attempt hangs on the initial loading screen (Apex logo with spinner) before sign-in. The game does not crash, it hangs indefinitely. Event Viewer shows no r5apex.exe or EAAntiCheat errors. System: - Windows 11 Home, build 26300 (10.0.26300.9711) - AMD Ryzen 7 7800X3D, 32GB RAM - ASUS PRIME X670E-PRO WIFI, BIOS 3222 (3/5/2025), Secure Boot ON - AMD GPU, Adrenalin 26.8.1 WHQL Recommended drivers - Microsoft Defender Antivirus (Webroot SecureAnywhere removed during troubleshooting) Already tried, none resolved it: - Verified Steam game files (3 files failed, reacquired) - Disabled Steam overlay - Deleted videoconfig.txt, added -novid launch option - Flushed DNS, reset Winsock, restarted - Allowed r5apex.exe through firewall, added antivirus exclusions - Uninstalled Webroot SecureAnywhere - Attempted EA Javelin anti-cheat manual reinstall (Apex missing from installer dropdown) - Full clean uninstall and reinstall of the game - Updated GPU and chipset drivers - Tested over Cloudflare Warp VPN (rules out ISP routing) - Clean boot with only Steam enabled (rules out background software) - Confirmed Visual C++ 2015-2022 Redistributables (x64/x86) installed - sfc /scannow repaired corrupt Windows system files, restarted after - Confirmed Apex/EA servers operational during testing ``` You can reach them at help.ea.com. Paste that in and they'll skip straight past the basic steps.