EasyAnticheat does not support bypassing I/O.

It's early days,  but I think I am able to share a potential resolution that may help other users.

I am an IT Field Engineer, and also run the Youtube Channel -

https://youtube.com/@nextlevelsimgaming?si=xdBPGa56P-Fc7GnH

As stated, the issue is that Easy Anti Cheat shows that File Filter does not support Bypass IO, this is a widespread issue that is affecting a number of Core Ultra 9 owners, largely due to the new architecture of the processor, but also other users in general, the issue is that the NVME driver is not correctly filtering the ByPass IO feature, which is a Windows 11 feature, and detailed here - 

https://learn.microsoft.com/en-us/windows-hardware/drivers/ifs/bypassio

Suggested fixes show that disabling Core Isolation, and Virtualisation, and being on the latest Windows 24H2 should mitigate this issue, this is not however correct for Intel.

First of all, I completely uninstalled EasyAntiCheat.

On my system for example, I have 4 Nvme drives, all are Bypass IO compatible, so the initial error did not make sense to me, upon investigation of the filter drivers, the Intel RST driver relies on Virtualisation and Hyper V to run correctly

C:\Windows\System32>fsutil bypassIo state C:\
BypassIo on "C:\" is currently supported
    Storage Type:   NVMe
    Storage Driver: BypassIo compatible

I set the following elevated commands to activate Hyper V, and also Credential Guard, also activated Intel Virtualization, Core Isolation is still disabled (open command prompt as admin, and copy and paste each value)

DISM /Online /Enable-Feature /All /FeatureName:Microsoft-Hyper-V reg add

HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard /t REG_DWORD /v

EnableVirtualizationBasedSecurity /d 1 /f reg add

HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\CredentialGuard /t

REG_DWORD /v Enabled /d 1 /f reg add HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity /t REG_DWORD /v Enabled /d 1 /f reg add

HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\KeyGuard\Status /t REG_DWORD /v CredGuardEnabled /d 1 /f reg add

HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\KeyGuard\Status /t

REG_DWORD /v KeyGuardEnabled /d 1 /f

I also in BIOS disabled AMI Native NVME Driver Support
I then reinstalled EasyAntiCheat from drive H from the iRacing EAC folder
Previously the game would crash within minutes, however now, I have played successfully and have had no Events relating to the issue,