Secure Boot in Battlefield 2042: How to Enable UEFI Safely

Battlefield 2042 Update 8.8.0 requires Secure Boot on PC hardware that supports the feature. Secure Boot is not a Battlefield setting: it is enabled in your computer’s UEFI firmware and confirmed from Windows.

Before changing firmware options, press Windows + R, enter msinfo32, and check BIOS Mode and Secure Boot State. The target configuration is BIOS Mode: UEFI, Secure Boot State: On, a GPT Windows system disk, and TPM 2.0 ready for use.

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Why Battlefield 2042 checks Secure Boot

EA introduced the Secure Boot requirement with Battlefield 2042 Update 8.8.0 for compatible PC hardware. Systems that support Secure Boot but have it disabled may display a warning that Secure Boot is required.

Secure Boot helps establish a trusted startup chain. UEFI checks that approved, digitally signed boot software is loaded before Windows starts, making some forms of boot-time tampering more difficult. EA says this strengthens protection against cheats that attempt to operate during the Windows boot process.

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This is separate from the earlier move to EA anticheat, which Battlefield 2042 adopted in October 2023. Secure Boot does not guarantee a cheat-free game, detect every cheat, or replace server-side detection, reports, updates, and other anticheat measures.

UEFI, BIOS, Secure Boot, GPT, and TPM explained

• UEFI: modern motherboard firmware and boot environment.
• Legacy BIOS or CSM: older compatibility boot modes. CSM is often the setting that allows Legacy-style booting on newer systems.
• Secure Boot: a UEFI feature that permits trusted, signed boot software to load.
• GPT: the modern partitioning format normally paired with UEFI.
• MBR: an older partitioning format commonly used with Legacy BIOS booting.
• TPM 2.0: a hardware- or firmware-backed security component. EA’s current Secure Boot guide lists a TPM that is ready for use among the prerequisites.

UEFI and Secure Boot are not the same thing. A PC can be running in UEFI mode with Secure Boot disabled. Also, a motherboard may support UEFI even though Windows was installed in Legacy mode.

Check your configuration before changing anything

1. Check UEFI mode and Secure Boot

1. Press Windows + R.
2. Type msinfo32 and press Enter.
3. In System Summary, find BIOS Mode and Secure Boot State.

2. Check TPM 2.0

1. Press Windows + R.
2. Enter tpm.msc and press Enter.
3. Confirm that the TPM status says it is ready for use. Check the specification version shown by Windows if available.

TPM support can be built into the processor or firmware rather than provided by a separate physical module. Firmware labels vary. Examples include Intel PTT, AMD fTPM, Security Device Support, and Trusted Computing. These names are not universal, so use your manufacturer’s documentation rather than guessing at unrelated security settings.

3. Check whether the Windows disk is GPT or MBR

1. Press Windows + X and open Disk Management.
2. Identify the physical disk containing the Windows installation, commonly the disk containing the C: volume.
3. Right-click the disk label in the left-hand column, such as Disk 0 or Disk 1. Do not right-click only an individual partition.
4. Select Properties, open the Volumes tab, and read Partition style.

GUID Partition Table (GPT) is the expected format for the UEFI configuration. Master Boot Record (MBR) requires preparation before switching from Legacy/CSM to UEFI.

Do not assume that the Windows disk is Disk 0. Record the actual disk number shown in Disk Management before using any conversion command.

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If Windows already uses UEFI: enable Secure Boot

This is usually the least disruptive situation because the Windows installation is already using the modern boot mode. Firmware menus differ between manufacturers and may also change after a firmware update.

Enter UEFI firmware from Windows

1. Open Settings.
2. Select System, then Recovery.
3. Under Advanced startup, select Restart now.
4. Choose Troubleshoot → Advanced options → UEFI Firmware Settings.
5. Select Restart.

Some systems do not show the UEFI Firmware Settings option. In that case, use the manufacturer’s documented startup key. Common keys include Delete, F2, F10, and Esc, but no single key works on every computer.

Enable the feature

1. Open the Boot, Security, or Windows OS Configuration section.
2. If present, disable Legacy Boot or CSM. Do this only when Windows already reports UEFI and the system disk is GPT.
3. Set the operating-system type to a Windows UEFI option if your firmware provides one. Some systems call this Windows UEFI mode.
4. Set Secure Boot to Enabled.
5. If prompted, select Install default keys, Restore factory keys, or the equivalent option.
6. Save the changes and choose Save Changes & Reset, or the equivalent command.
7. After Windows starts, run msinfo32 again and confirm BIOS Mode: UEFI and Secure Boot State: On.

Some firmware requires a BIOS administrator password before Secure Boot can be changed. If the option is greyed out, do not alter unrelated settings at random.

If the disk is MBR or Windows uses Legacy mode

Changing only the firmware mode is unsafe when Windows is installed for Legacy/MBR booting. A supported Windows installation may be converted from MBR to GPT with Microsoft’s mbr2gpt utility, following EA’s documented procedure.

Prepare first

• Back up important files before changing the system disk.
• Make sure you can access your BitLocker or device-encryption recovery key. Firmware and boot-mode changes can trigger a recovery prompt.
• Identify the correct physical disk number in Disk Management. The example below uses Disk 0 only as an example.
• If the PC belongs to an employer or school, stop and contact its administrator.
• Do not continue if the validation command reports an error.

Open Command Prompt or PowerShell as administrator and replace 0 with the actual Windows disk number:

mbr2gpt /validate /disk:0 /allowfullOS

Validation must succeed before conversion. If it does, run:

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mbr2gpt /convert /disk:0 /allowfullOS

Do not interrupt the conversion. It changes the system disk and is not a risk-free operation even though mbr2gpt is Microsoft’s supported conversion path.

After conversion, enter UEFI firmware, change the boot mode from Legacy/CSM to UEFI, and select Windows Boot Manager for the Windows drive as the first boot option. Windows normally will not boot correctly if the disk has been converted to GPT but the firmware remains in Legacy mode.

If validation fails, stop. Review the exact error, confirm the disk number, and consult Microsoft or the computer/motherboard manufacturer rather than forcing the conversion.

Why Secure Boot may be greyed out

The most common causes are:

• Legacy boot or CSM is still enabled.
• The Windows disk is MBR rather than GPT.
• Default Secure Boot keys have not been installed.
• The firmware requires an administrator password.
• The operating-system type is set to Other OS or a non-Windows mode.
• The PC is booting from a different drive than the one you checked.
• The firmware is outdated, or the motherboard does not support Secure Boot.
• A custom bootloader, unsigned pre-boot tool, or incompatible option ROM is present.

Check the manufacturer’s instructions for the exact menu names and key-enrollment process. Do not flash firmware or graphics-card firmware merely to make the option appear unless the manufacturer specifically documents that procedure for your model.

If Windows will not boot after the change

1. Return to UEFI firmware and check that Windows Boot Manager for the correct drive is the first boot option.
2. If BitLocker or device encryption requests a recovery key, use the saved recovery key. Do not guess.
3. If necessary, temporarily restore the previous boot mode to regain access to Windows, but avoid repeatedly toggling modes without understanding the disk’s current GPT/MBR layout.
4. Do not change unrelated firmware settings while troubleshooting.
5. If the computer remains unable to start, use Windows recovery tools or contact the PC or motherboard manufacturer.

If the disk has already been converted to GPT, the normal long-term configuration is UEFI, not continued switching between Legacy and UEFI.

If Battlefield 2042 still says Secure Boot is required

Use this order so that each check confirms the previous one:

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1. Restart Windows once more. EA notes that an additional restart may be required on some Windows versions after enabling Secure Boot.
2. Run msinfo32 and confirm both BIOS Mode: UEFI and Secure Boot State: On.
3. Run tpm.msc and confirm that the TPM is ready for use.
4. Install pending Windows updates and check for an appropriate firmware update from the computer or motherboard manufacturer.
5. Confirm that Battlefield 2042 is fully updated.
6. Use the game launcher’s official repair or verify-files function.
7. Repair or reinstall EA anticheat only through EA-supported procedures.
8. Temporarily remove or disable software that injects into games, changes boot behavior, or installs unsupported low-level drivers.
9. If the firmware screen says Secure Boot is enabled but Windows reports Secure Boot State: Off, treat Windows’ result as the relevant status for this troubleshooting flow.
10. If all values are correct and the warning remains, contact EA Support with the exact message and screenshots of the Windows status values.

Special cases to consider

BitLocker or device encryption

A change to boot mode, Secure Boot keys, or firmware configuration can cause Windows to request the BitLocker recovery key. Find and save that key before making changes.

Dual-boot systems

Secure Boot can affect Linux distributions, custom bootloaders, and unsigned pre-boot utilities. Check the other operating system’s Secure Boot compatibility before switching to a UEFI-only configuration.

Virtual machines

The host computer’s Secure Boot state and a virtual machine’s virtual Secure Boot or virtual TPM settings are separate. Changing the host setting does not automatically configure the guest operating system.

Older or unusual hardware

An older motherboard, legacy graphics-card option ROM, custom bootloader, or specialized boot tool may complicate UEFI-only startup. If Windows reports Secure Boot as unsupported, check the exact PC or motherboard model rather than trying to force a hidden setting.

Does Secure Boot improve performance?

No. Secure Boot is a boot-integrity and platform-security feature, not a graphics, CPU, frame-rate, or latency optimization. Enabling it should not be treated as a way to increase FPS.

EA describes its anticheat as designed to have negligible gameplay impact, but that is EA’s stated claim, not an independent performance measurement established by the sources here.

Final Battlefield 2042 Secure Boot checklist

BIOS Mode: UEFI
Secure Boot State: On
TPM: Ready for use
Windows system disk: GPT
Windows Boot Manager: First boot option
Battlefield 2042: Fully updated

If your PC supports the feature, this configuration addresses the Secure Boot requirement introduced in Update 8.8.0. If the hardware reports Secure Boot as unsupported, or conversion and firmware changes do not proceed cleanly, stop experimenting and use the manufacturer’s support documentation.

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