After the recent updates in Rust, some servers have started requiring TPM 2.0 and Secure Boot to be enabled. This can lead to an error message EAC TPM verification failed when trying to connect, along with other messages related to Windows boot verification.

In simple terms, the issue usually lies not with Rust itself, but with Easy Anti-Cheat being unable to confirm the secure boot of the system. This is often resolved by enabling TPM 2.0, Secure Boot, updating BIOS/UEFI, and rechecking Windows settings.

“Servers can now opt-in to requiring TPM and Secure Boot enabled for players to connect to them.”

Why the EAC TPM verification failed error occurs

Usually, the reason is one of the following:

TPM 2.0 is present but disabled in BIOS/UEFI.
Secure Boot is supported but not enabled.
Windows is booted in Legacy/CSM mode instead of UEFI.
Outdated BIOS causing issues with fTPM/PTT.
TPM initialization is disrupted or auto-provisioning is disabled.
Easy Anti-Cheat cannot detect a valid measured boot log.
The game is launched through a cloud service where the user cannot enable BIOS protection.

What to check first

What to check	Expected state	How to check
TPM	TPM 2.0 enabled and ready	Win + R → `tpm.msc`
Secure Boot	Enabled	Win + R → `msinfo32`
BIOS mode	UEFI	`msinfo32` → “BIOS Mode”
TPM in PowerShell	`TpmPresent=True`, `TpmReady=True`	Run PowerShell as administrator → `Get-Tpm`
Measured boot	No boot log verification errors	Check after reboot and enabling Secure Boot/TPM

Quick solution steps

Update Windows and restart the PC.
Check TPM using tpm.msc.
Check Secure Boot and UEFI mode using msinfo32.
If TPM or Secure Boot are disabled, enter BIOS/UEFI and enable them.
Disable Legacy/CSM if active.
Update BIOS/UEFI to the latest version.
Run PowerShell as administrator and check TPM with the commands below.
Restart the PC and try connecting to Rust server again.

Step 1. Checking TPM 2.0

Press Win + R, type tpm.msc, and press Enter.

What to look for:

TPM ready for use
Specification version: 2.0

If TPM is not found, it usually means it's disabled in BIOS/UEFI.

For Intel

Look for settings like PTT, Intel Platform Trust Technology, or Security Device Support.

For AMD

Look for settings like AMD fTPM, AMD CPU fTPM, or TPM Device Selection.

Step 2. Checking Secure Boot

Press Win + R, type msinfo32, and press Enter.

Check two fields:

BIOS Mode should be UEFI
Secure Boot State should be On

If Secure Boot is unavailable, the issue often lies in the system being installed or booted in Legacy/CSM mode.

Step 3. Checking TPM via PowerShell

Open PowerShell as administrator and run:

tpmtool getdeviceinformation
Get-Tpm

Desired values should be:

Parameter	Normal value
TPM Present	true
TPM Version	2.0
Is Initialized	true
Ready For Attestation	true
TpmPresent	true
TpmReady	true
TpmEnabled	true
TpmOwned	true
AutoProvisioning	true

If AutoProvisioning is disabled, you can try:

Enable-TpmAutoProvisioning

After that, make sure to restart the computer.

Step 4. BIOS/UEFI changes

Specific names may vary by motherboard manufacturer, but the general logic is as follows:

Enable TPM 2.0:
- Intel → PTT
- AMD → fTPM
Enable Secure Boot
Set boot mode to UEFI Only
Disable CSM / Legacy Boot
If given a choice for Secure Boot mode, select Standard
Save changes with F10 and restart

Step 5. If the error persists

Then go through this checklist:

Update BIOS/UEFI to the latest version.
Install all Windows updates.
Check if TPM is disabled after BIOS reset.
Verify that Secure Boot is truly enabled, not just available.
Ensure Windows boots in UEFI mode.
Restart Steam and Rust after system reboot.
If needed, reinstall Easy Anti-Cheat.

About boot validation errors

Sometimes EAC shows not only EAC TPM verification failed but also messages like:

Boot validation failed: Measured bootlog not found
Boot validation failed: PCR mismatch
Unable to verify Secure boot. Event missing from measured bootlog

Usually, this indicates that EAC cannot correctly confirm the secure boot chain. In such cases, the main actions remain the same:

Check TPM 2.0
Check Secure Boot
Check UEFI instead of Legacy
Update BIOS
Update Windows
Perform a full PC reboot

If you play through GeForce NOW or another cloud service

Here's an important point: if you lack access to BIOS/UEFI settings, you physically cannot enable TPM, Secure Boot, or change boot mode. In this case, the player cannot solve the issue themselves—it becomes a matter for the cloud platform and game publisher.

On a regular PC, this is resolved through system settings, while in the cloud, compatibility must be provided by the service and game developer.

Summary

EAC TPM verification failed in Rust is not a random bug but a result of new anti-cheat requirements on some servers. In most cases, the following steps help:

Enable TPM 2.0;
Enable Secure Boot;
Switch the system to UEFI;
Update BIOS and Windows;
Recheck TPM status via PowerShell.

If the error persists after this, it's advisable to focus on the BIOS settings of your motherboard, as the issue often lies there.

[SNG]

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