File System Filter EasyAntiCheat_EOSSys` does not support Bypass IO [CRASHING]

Question

Hello,

For about a month now, I would have trouble with a game (Fortnite) crashing a steady amount due to the anti cheat Epic Games uses, EasyAntiCheat. When I look in event viewer after a crash, it presents this:

_______________________________________________________________________________________________________________________

Log Name: System

Source: Microsoft-Windows-FilterManager

Date: 12/14/2024 10:05:04 PM

Event ID: 11

Task Category: None

Level: Warning

Keywords:

User: SYSTEM

Computer: DESKTOP-NLJH1M8

Description:

File System Filter 'EasyAntiCheat_EOSSys' (Version 6.1, ‎2024‎-‎11‎-‎27T06:19:31.000000000Z) does not support bypass IO.

Supported features: 0x4.

Event Xml:

11

0

3

0

0

0x8000000000000000

66328

System

DESKTOP-NLJH1M8

EasyAntiCheat\_EOSSys

6

1

2024-11-27T06:19:31.0000000Z

0x4

_______________________________________________________________________________________________________________________

I tried reinstalling the game which didn't work, along with internet research which didn't present many results and no working solutions. I disabled my AV to see if that was the cause as well, but no difference.

At this point I am at my wits' end.

Any solutions or ideas?

All will be greatly appreciated!

Cheers,

PM

Answer 1

i have the same problem with the same game, that's like about one month ago too. and sometimes, my entire PC freeze, forcing me to restart it completely. i just don't know what's the cause of it and nothing solve it. i really need help

Answer 2

I have the same exact problem also when launching apex legends through steam I get 5 warnings in my event viewer with this message in the details. This just started not to long ago maybe a month ago or less. I have no idea what's going on this was never an issue until recently. I am on 23h2 also still and didn't upgrade to 24h2 last week. I am going to wait a few months to update to the newest windows 11 24h2 until they patch it a little more.

File System Filter 'EasyAntiCheat_EOSSys' (Version 6.1, ‎2024‎-‎11‎-‎27T03:19:31.000000000Z) does not support bypass IO.

Supported features: 0x4.

Answer 3

MS Should start by making a Article ID for this and get some information - EXAMPLE BELOW!!!

Article ID: KBXXXXXX
Last Reviewed: December 23, 2024
Applies To: Microsoft Windows, Easy Anti-Cheat

Microsoft has identified a potential issue where system updates may interfere with kernel access, causing compatibility problems with Easy Anti-Cheat (EAC). This issue has been reported to cause disruptions in gaming experiences and may affect other kernel-level processes.

• Games utilizing Easy Anti-Cheat fail to launch or crash during operation.
• Errors or warnings related to kernel access conflicts.
• Possible impacts on other software with similar kernel-level dependencies, such as CrowdStrike or similar tools.

The issue stems from updates to the Windows kernel that may inadvertently affect software relying on kernel-level integration.

Microsoft is aware of this issue and is working to identify the root cause and develop a resolution.

At this time, users encountering this issue are encouraged to:

1. Pause Updates: Delay Windows updates until a fix is released.
2. Contact Support: Report the issue through the appropriate support channels for tracking.
   • Microsoft Support: Submit a ticket.
   • Easy Anti-Cheat: Contact support.

Microsoft will provide updates to this KB article as progress is made. Users are encouraged to monitor this page for announcements regarding patches or workarounds.

This issue has been escalated to the relevant teams at both Microsoft and Easy Anti-Cheat for further investigation.

For updates, follow:

• @Microsoft
• @EasyAntiCheat

Keywords: kernel access, Easy Anti-Cheat, CrowdStrike, Windows Update, compatibility issue

This does not solve the issue for me. I was also adviced from epic games to delete a web cache folder that could be the problem, and the event viewer be a "false" positive error.

Regardless, my current state of the module after having reinstalled easyanticheat is

BypassIo on "C:\Windows\System32" is not currently supported

Status: 506 (At least one minifilter does not support bypass IO)

Driver: EasyAntiCheat_EOSSys

Reason: The specified minifilter does not support bypass IO.

Storage Type: NVMe

Storage Driver: Not BypassIo Compatible

Driver Name: iaStorVD.sys

I am on

Windows 11 Pro

24H2

os build 26100.2605

Now a possible solution to the issue from epic games, was to delete a folder located in the following location : post dump from their support reply -

OK, I will try to go through the troubleshooting steps with you here. Please try to follow the steps below to clear your launcher's cache on Windows:

1. In the lower right corner click on the arrow pointing up (the chevron)
2. Right-click on the Epic icon in the pop up window
3. Select Exit
4. Press the Windows key and tap the R key, this will open a run window
5. Type %localappdata%
6. Press the Enter key, this will open File Explorer
7. Open the EpicGamesLauncher folder
8. Open the Saved folder
9. Right click and select delete on:

• webcache
• webcache_4147
• webcache_4430

There may only be one or two of the files present

I am currently testing out now, to see if another crash happens. i can already see in event viewer that the filtermanager is already crying about the bypass problem. But game have yet to crash *crosses fingers*

Answer 4

Epic games says the issue is "benign". Yeah right.

https://eoshelp.epicgames.com/s/article/What-does-this-warning-imply-EasyAntiCheat-EOSSys-does-not-support-bypass-IO?language=en_US

My game is still crashing and I don't know what to do!!!

Answer 5

Hi, thanks for reaching out. My name is Bernard a Windows fan like you. I'll be happy to help you out today, my timezone is UTC +8.

I understand the issue you have, there is nothing to worry I am here to help, based on the error you have, there is an issue with EasyAntiCheat, this is an app for your games to run with integrity, and for us to sort out the issue, kindly follow the steps below:

Uninstall EasyAntiCheat:

Press the Windows key + R and type in:

%appdata%\easyanticheat

Then hit OK

Delete the EasyAntiCheat folder then restart the PC and check.

Note: If you have third-party anti-virus I suggest to uninstall it as well and if none works, I suggest to reinstall the game.

Let me know how it goes and I hope that helps.

Bernard