BSOD on game launch with anti cheat ( EAC )

jozefpodlecki · 2026-06-16T11:54:31-0400

Winver: 25H2 ( OS Build 26200.8655 ) Windows 11 Home

Hello,

I suddenly started getting a BSOD while launching the game, and it looks like something is going wrong in Easy Anti-Cheat. Unfortunately, WinDbg's bugcheck analysis didn't pinpoint where the problem might be occurring.

The error only appeared today, so any reasonable conclusion would be that it's related to either a recent Windows update or a device driver. Naturally, once the BSOD started happening, I went through the usual troubleshooting steps: updating my graphics driver, removing the game folder containing the binaries, and then triggering Steam's integrity verification to download them again.

My conversation with AGS was fruitless and, at times, it felt like I was talking to an AI assistant or someone with very little technical knowledge.

I cannot rule out another possibility: that my hardware is simply getting old. I ran MemTest64 for a few iterations, but it didn't detect any issues.

I've attached a link to the v2 log via Google Drive, as I was unable to upload it directly to the forum. Perhaps the file size is too large, although it's only around 3 MB, or maybe I don't have enough forum reputation yet.

As requested, I performed the additional steps.

TuneUp tool has been running for quite a while.
Logs:

TuneUp Plus
Application.evt
System.evt
BSOD V2

Ran Enable_automatic_backup_of_system_registry_to_RegBack_folder.reg
Created Restore Point with pwsh Checkpoint-Computer

I've also attached some console output from WinDbg.
Some interesting keywords that stood out to me are PAGE_FAULT_IN_NONPAGED_AREA and MiVisibleState.

Thanks in advance!

PAGE_FAULT_IN_NONPAGED_AREA (50)
Invalid system memory was referenced. This cannot be protected by try-except.
Typically the address is just plain bad or it is pointing at freed memory.
Arguments:
Arg1: ffff9382f500001c, memory referenced.
Arg2: 0000000000000000, X64: bit 0 set if the fault was due to a not-present PTE.
bit 1 is set if the fault was due to a write, clear if a read.
bit 3 is set if the processor decided the fault was due to a corrupted PTE.
bit 4 is set if the fault was due to attempted execute of a no-execute PTE.
- ARM64: bit 1 is set if the fault was due to a write, clear if a read.
bit 3 is set if the fault was due to attempted execute of a no-execute PTE.
Arg3: fffff8038ec4c192, If non-zero, the instruction address which referenced the bad memory
address.
Arg4: 0000000000000002, (reserved)
TAG_NOT_DEFINED_202b: *** Unknown TAG in analysis list 202b
DUMP_FILE_ATTRIBUTES: 0x31808
Kernel Generated Triage Dump
FAULTING_THREAD: ffff9382e77e5080
EXCEPTION_PARAMETER1: 0000000000000000
EXCEPTION_PARAMETER2: ffff9382f500001c
READ_ADDRESS: fffff803c41c44d8: Unable to get MiVisibleState
ffff9382f500001c
MM_INTERNAL_CODE: 2
CUSTOMER_CRASH_COUNT: 1
PROCESS_NAME: System
IP_IN_PAGED_CODE:
EasyAntiCheat_EOS+efc192
fffff803`8ec4c192 8b09 mov ecx,dword ptr [rcx]
STACK_TEXT:
ffffa582`87e83898 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KeBugCheckEx
SYMBOL_NAME: EasyAntiCheat_EOS+efc192
MODULE_NAME: EasyAntiCheat_EOS
IMAGE_NAME: EasyAntiCheat_EOS.sys
STACK_COMMAND: .process /r /p 0xffff9382bb50f040; .thread /r /p 0xffff9382e77e5080 ; kb
BUCKET_ID_FUNC_OFFSET: efc192
FAILURE_BUCKET_ID: AV_EasyAntiCheat_EOS!unknown_function
OSPLATFORM_TYPE: x64
OSNAME: Windows 10
FAILURE_ID_HASH: {220d5b3d-33fc-4c8e-6484-ebd7c9e905b8}
Followup: MachineOwner

FreeBooter · 2026-06-16T12:10:23-0400

EasyAntiCheat_EOS.sys is a kernel-level anti-cheat driver utilized by many multiplayer games (like Rust, Apex Legends, Fortnite, and The Finals) to prevent cheating. Because it operates with deep system access, it is a common culprit behind the Blue Screen of Death (BSOD) if it conflicts with motherboard utilities or gets corrupted.

jozefpodlecki · 2026-06-16T13:11:31-0400

Just tried approach below

Remove C:\Program Files (x86)\EasyAntiCheat_EOS and any related registry entries (this might be tricky, as it doesn't appear under installed programs).
After digging through registry:

Powershell:

Remove-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\TypedPaths" -Name "url1" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKCU:\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache" -Name "C:\Program Files (x86)\Steam\steamapps\common\Lost Ark\Binaries\Win64\EasyAntiCheat\EasyAntiCheat_EOS_Setup.exe.FriendlyAppName" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKCU:\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache" -Name "C:\Program Files (x86)\Steam\steamapps\common\Lost Ark\Binaries\Win64\EasyAntiCheat\EasyAntiCheat_EOS_Setup.exe.ApplicationCompany" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKCU:\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache" -Name "C:\Program Files (x86)\Steam\steamapps\common\Lost Ark\Binaries\Win64\EasyAntiCheat\EasyAntiCheat_EOS_Setup.exe.FriendlyAppName" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKCU:\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache" -Name "C:\Program Files (x86)\Steam\steamapps\common\Lost Ark\Binaries\Win64\EasyAntiCheat\EasyAntiCheat_EOS_Setup.exe.ApplicationCompany" -ErrorAction SilentlyContinue
Remove-Item -Path "HKLM:\SYSTEM\Setup\FirstBoot\Services\EasyAntiCheat_EOS" -Recurse -Force -ErrorAction SilentlyContinue

Remove-ItemProperty -Path "HKLM:\SYSTEM\ControlSet001\Services\EasyAntiCheat_EOSSys" -Name "DisplayName" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\EasyAntiCheat_EOSSys" -Name "DisplayName" -ErrorAction SilentlyContinue
Remove-Item -Path "HKLM:\SYSTEM\ControlSet001\Services\EasyAntiCheat_EOSSys" -Force -ErrorAction SilentlyContinue
Remove-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Services\EasyAntiCheat_EOSSys" -Force -ErrorAction SilentlyContinue

Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\WindowsSelfHost\OneSettings" -Recurse -Force

Install the driver manually (as apparently launching the game from Steam does not do it; perhaps it's only done once after installation) .\EasyAntiCheat_EOS_Setup.exe install <product_id>
Launch the game (which internally calls start_protected_game.exe, sets up the driver, loads it, and then launches the game).

Still BSOD. Previously, I've only run .\EasyAntiCheat_EOS_Setup.exe qa-factory-reset from the command line and it didn't properly cleanup artifacts.

FreeBooter · 2026-06-16T13:19:39-0400

If the driver files become corrupted, the game may refuse to launch. You can repair the anti-cheat service by navigating to the game's folder (e.g., Program Files (x86)\EasyAntiCheat), right-clicking on EasyAntiCheat_Setup.exe (or EasyAntiCheat_EOS_Setup.exe), and selecting Repair Service.

Third-party applications, particularly overclocking software, antivirus programs, or motherboard utilities (like ASUS AI Suite / Fan Xpert), are known to trigger conflicts with the EAC driver. Updating these utilities or performing a clean boot can resolve the issue.

Aggressive CPU, GPU, or RAM overclocks can cause kernel-level drivers to crash. Temporarily reverting to default settings in your BIOS/UEFI or monitoring software can fix the issue.

Run System File Checker: Corrupt Windows files often cause driver crashes. Open Command Prompt as an administrator and run sfc /scannow.

Delete and Re-download Files: Completely remove the Easy Anti-Cheat folders from your Program Files (x86) and AppData directories, then verify the integrity of the game's files via Steam or your Epic Games Launcher.

Ensure your Windows, graphics card drivers, and motherboard BIOS are up to date.

For a step-by-step visual guide on manually removing and repairing corrupt EAC files to stop the BSOD, check out this tutorial:

jozefpodlecki · 2026-06-16T13:41:46-0400

FreeBooter said:
If the driver files become corrupted, the game may refuse to launch. You can repair the anti-cheat service by navigating to the game's folder (e.g., Program Files (x86)\EasyAntiCheat), right-clicking on EasyAntiCheat_Setup.exe (or EasyAntiCheat_EOS_Setup.exe), and selecting Repair Service.

Third-party applications, particularly overclocking software, antivirus programs, or motherboard utilities (like ASUS AI Suite / Fan Xpert), are known to trigger conflicts with the EAC driver. Updating these utilities or performing a clean boot can resolve the issue.

Aggressive CPU, GPU, or RAM overclocks can cause kernel-level drivers to crash. Temporarily reverting to default settings in your BIOS/UEFI or monitoring software can fix the issue.

Run System File Checker: Corrupt Windows files often cause driver crashes. Open Command Prompt as an administrator and run sfc /scannow.

Delete and Re-download Files: Completely remove the Easy Anti-Cheat folders from your Program Files (x86) and AppData directories, then verify the integrity of the game's files via Steam or your Epic Games Launcher.

Ensure your Windows, graphics card drivers, and motherboard BIOS are up to date.

For a step-by-step visual guide on manually removing and repairing corrupt EAC files to stop the BSOD, check out this tutorial:

I’ve already gone through most of these steps.

EAC has been repaired/reinstalled, and the driver component was effectively reset. I also removed the game binaries and verified integrity via Steam, which re-downloaded everything cleanly.

Third-party software conflicts (overclocking tools, motherboard utilities, antivirus) have also been ruled out, and the system is running stock settings.

Windows system file corruption checks (SFC) were also run and didn’t report any issues.

At this point, the behavior is very consistent: the BSOD occurs within ~2-4 seconds of launching the game. The splash screen appears briefly, and then the system hangs ( one screen shows BSOD second one is hanged/frozen with splash animation )

zbook · 2026-06-16T14:02:13-0400

1) Please run > post share links

https://www.tenforums.com/attachments/bsod-crashes-debugging/358470d1643456903-batch-files-use-bsod-debugging-gather_additional_dump_files.bat

Batch files for use in BSOD debugging - Windows 10 Help Forums

Information This thread is for use by the BSOD team to store batch files that can be used to collect additional data, fix settings or anything else that is useful in debugging BSOD problems in Windows 10. The way I see it working is the first

www.tenforums.com

2) The BIOS Version/Date LENOVO LPCN62WW, 17/06/2025

Upgrade the BIOS: 62WW > 65WW

Enter the serial number

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/legion-series/legion-pro-5-16arx8/82wm/downloads/driver-list/component?name=BIOS%2FUEFI&id=5AC6A815-321D-440E-8833-B07A93E0428C

3) Download to a new desktop folder:

Download Official Windows 11 ISO file from Microsoft

This tutorial will show you how to download an official Windows Server or Windows 11 64-bit or ARM64 ISO file from Microsoft. Microsoft provides ISO files for Windows Server and Windows 11 to download. You can use these ISO files to clean install or in-place upgrade Windows 11. The Flight Hub...

www.elevenforum.com

Download Windows 11

4) Uninstall EasyAntiCheat (EAS)

Code:

How to manually uninstall

If you want to bypass this process and remove the EAC service manually, you can do so by running the following commands.

NOTE: The EAC service is shared between all games on your PC that use it. If you follow these steps to manually remove it, you may have to reinstall any remaining games that use EAC in order to play them again in the future.

1. Open a Command Prompt as Administrator

2. Run the command: cd C:\Program Files (x86)\EasyAntiCheat_EOS

3. Run the command: EasyAntiCheat_EOS.exe qa-factory-reset

It is normal that no text is output. The next command will confirm that it worked.
4. Run the command: echo %ERRORLEVEL%

If you see 0, the uninstall operation succeeded. If you see something else, it failed. Make sure you are running an Administrator Command Prompt and try again.
5. Close the Command Prompt

6. Delete the C:\Program Files (x86)\EasyAntiCheat_EOS directory

Easy Anti-Cheat help: Bans, errors, and appeals

Get help with Easy Anti-Cheat issues. Browse FAQs on bans, errors, and account problems, or submit an appeal if you think a ban was applied by mistake.

www.easy.ac

5) Do not reinstall EAC > play alternative games

6) For new BSODs > post a new V2 share link into the newest post

Code:

 Microsoft Windows 11 Home  Version 25H2 (OS Build 26200.8655)
 
==================================================================

    Started on 16/06/2026 at 16:13:10.55
   
        [SFC /ScanNow]
   
Beginning system scan.  This process will take some time.

Results:
 
Windows Resource Protection found corrupt files but was unable to fix some of them.

For online repairs, details are included in the CBS log file located at
windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. For offline
repairs, details are included in the log file provided by the /OFFLOGFILE flag.
 
==================================================================
 
A TXT file named SFC_details-1.txt has been created.

==================================================================

    Started on 16/06/2026 at 16:14:49.03

        [DISM /online /cleanup-image /ScanHealth]

Deployment Image Servicing and Management tool
Version: 10.0.26100.8521

Image Version: 10.0.26200.8655
 
The component store is repairable.

The operation completed successfully.
 
==================================================================

    Started on 16/06/2026 at 16:17:03.56

        [DISM /online /cleanup-image /RestoreHealth]

Deployment Image Servicing and Management tool
Version: 10.0.26100.8521

Image Version: 10.0.26200.8655
 
Error: 0x800f0915
The repair content could not be found anywhere.
Check the internet connectivity or use the "Source" option to specify the location of the files that are required to restore the image. For more information on specifying a source location, see https://go.microsoft.com/fwlink/?LinkId=243077.
The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log
 
==================================================================

    Started on 16/06/2026 at 16:35:02.49

        [SFC /ScanNow]

Beginning system scan.  This process will take some time.

Results:
 
Windows Resource Protection did not find any integrity violations.
 
==================================================================

    Started on 16/06/2026 at 16:36:37.74

        [ChkDsk /Scan]
 
The type of the file system is NTFS.
Volume label is Windows-SSD.
 
Stage 1: Examining basic file system structure ...
4173568 file records processed.                                                      
File verification completed.
Phase duration (File record verification): 22.60 seconds.
73808 large file records processed.                                  
Phase duration (Orphan file record recovery): 57.43 milliseconds.
0 bad file records processed.                                    
Phase duration (Bad file record checking): 0.05 milliseconds.
 
Stage 2: Examining file name linkage ...
3592 reparse records processed.                                    
5266642 index entries processed.                                                      
Index verification completed.
Phase duration (Index verification): 1.12 minutes.
0 unindexed files scanned.                                      
Phase duration (Orphan reconnection): 1.34 minutes.
0 unindexed files recovered to lost and found.                  
Phase duration (Orphan recovery to lost and found): 0.08 milliseconds.
3592 reparse records processed.                                    
Phase duration (Reparse point and Object ID verification): 16.90 milliseconds.
 
Stage 3: Examining security descriptors ...
Security descriptor verification completed.
Phase duration (Security descriptor verification): 40.56 milliseconds.
546538 data files processed.                                          
Phase duration (Data attribute verification): 0.05 milliseconds.
CHKDSK is verifying Usn Journal...
39859160 USN bytes processed.                                                          
Usn Journal verification completed.
Phase duration (USN journal verification): 40.56 milliseconds.

Windows has scanned the file system and found no problems.

No further action is required.
 
997872639 KB total disk space.
846434416 KB in 2943476 files.
1663576 KB in 546539 indexes.
0 KB in bad sectors.
4313051 KB in use by the system.
65536 KB occupied by the log file.
145461596 KB available on disk.
 
4096 bytes in each allocation unit.
249468159 total allocation units on disk.
36365399 allocation units available on disk.
Total duration: 2.85 minutes (171242 ms).
 
==================================================================
 
    Started on 16/06/2026 at 16:39:35.62
 
AutoReboot  
 
TRUE      
 
==================================================================
 
        [Set AutoReboot = False]
 
Updating property(s) of '\\JOZEF-LAPTOP-24\ROOT\CIMV2:Win32_OSRecoveryConfiguration.Name="Microsoft Windows 11 Home|C:\\WINDOWS|\\Device\\Harddisk0\\Partition3"'

Property(s) update successful.

==================================================================
 
AutoReboot  
 
FALSE      
 
==================================================================
 
DebugInfoType  
 
3            
 
==================================================================

        [Set DebugInfoType = 7]

Updating property(s) of '\\JOZEF-LAPTOP-24\ROOT\CIMV2:Win32_OSRecoveryConfiguration.Name="Microsoft Windows 11 Home|C:\\WINDOWS|\\Device\\Harddisk0\\Partition3"'

Property(s) update successful.

==================================================================
 
DebugInfoType  
 
7            
 
==================================================================

        [WMIC PageFile list]

AllocatedBaseSize=60000
CurrentUsage=1712
Description=C:\pagefile.sys
InstallDate=20231023184514.097960+060
Name=C:\pagefile.sys
PeakUsage=2887
Status=
TempPageFile=FALSE
 
==================================================================
 
AutomaticManagedPagefile  
 
FALSE                    
 
==================================================================

        [Set AutomaticManagedPagefile = True]

Updating property(s) of '\\JOZEF-LAPTOP-24\ROOT\CIMV2:Win32_ComputerSystem.Name="JOZEF-LAPTOP-24"'

Property(s) update successful.

==================================================================
 
AutomaticManagedPagefile  
 
TRUE                    
 
==================================================================

        [BcdEdit /enum {badmemory}]

RAM Defects
-----------
identifier              {badmemory}
 
==================================================================

    Finished on 16/06/2026 at 16:39:37.22
    It took 26 minutes and 27 seconds to complete the operations.

Code:

2026-06-16 16:14:22, Info                  CSI    000002de [SR] Cannot repair member file [l:74]'FileExp\FileExplorerExtensions\Assets\images\contrast-black\RunAsAdmin.svg' of UserExperience-FileExp, version 10.0.26100.8521, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35} in the store, hash mismatch
2026-06-16 16:14:23, Info                  CSI    000002e0 [SR] Cannot repair member file [l:74]'FileExp\FileExplorerExtensions\Assets\images\contrast-black\RunAsAdmin.svg' of UserExperience-FileExp, version 10.0.26100.8521, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35} in the store, hash mismatch
2026-06-16 16:14:23, Info                  CSI    000002e1 [SR] This component was referenced by [l:103]'UserExperience-Desktop-Package~31bf3856ad364e35~amd64~~10.0.26100.8655.0af8058457c395058e96ce0f56989cd8'
2026-06-16 16:14:44, Info                  CSI    000003bc [SR] Verifying 31 components
2026-06-16 16:14:44, Info                  CSI    000003bf [SR] Repairing 1 components
2026-06-16 16:14:44, Info                  CSI    000003c2 [SR] Cannot repair member file [l:74]'FileExp\FileExplorerExtensions\Assets\images\contrast-black\RunAsAdmin.svg' of UserExperience-FileExp, version 10.0.26100.8521, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35} in the store, hash mismatch
2026-06-16 16:14:44, Info                  CSI    000003c4 [SR] Cannot repair member file [l:74]'FileExp\FileExplorerExtensions\Assets\images\contrast-black\RunAsAdmin.svg' of UserExperience-FileExp, version 10.0.26100.8521, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35} in the store, hash mismatch
2026-06-16 16:14:44, Info                  CSI    000003c5 [SR] This component was referenced by [l:103]'UserExperience-Desktop-Package~31bf3856ad364e35~amd64~~10.0.26100.8655.0af8058457c395058e96ce0f56989cd8'
2026-06-16 16:14:44, Info                  CSI    000003c6 [SR] Repair complete
2026-06-16 16:14:44, Info                  CSI    000003c7 [SR] Committing transaction
2026-06-16 16:14:44, Info                  CSI    000003cf [SR] Verify and Repair Transaction completed. All files and registry keys listed in this transaction  have been successfully repaired

Code:

EasyAntiCheat_EOS.sys Wed Mar 11 04:46:43 2026 (69B13A03)

Search

BSOD on game launch with anti cheat ( EAC )

jozefpodlecki

New member

My Computer

System One

FreeBooter

Well-known member

My Computer

System One

jozefpodlecki

New member

My Computer

System One

FreeBooter

Well-known member

My Computer

System One

jozefpodlecki

New member

My Computer

System One

zbook

Well-known member

Batch files for use in BSOD debugging - Windows 10 Help Forums

Download Official Windows 11 ISO file from Microsoft

Easy Anti-Cheat help: Bans, errors, and appeals

My Computer

System One

Similar threads

Latest Support Threads

Latest Tutorials