How To Resolve Modern Warfare 4's TPM And Secure Boot Warning
This guide walks PC players through checking and enabling TPM 2.0 and Secure Boot to clear Modern Warfare 4's attestation requirement error. Those settings are used to support fairer multiplayer by limiting cheating.
Modern Warfare 4 can show a security warning when a PC lacks the required TPM 2.0 and Secure Boot state. Players can first verify status in Windows: tpm.msc should report specification version 2.0, while msinfo32 should show UEFI mode and Secure Boot on.
If either setting is off, the fix happens in BIOS/UEFI. The TPM option may appear as AMD fTPM or Intel PTT; Secure Boot may require disabling CSM or Legacy Boot first. Systems on Legacy Boot might need an MBR-to-GPT conversion, and users should not clear TPM keys.
The requirement could affect PC players whose hardware or firmware settings do not meet the attestation threshold, potentially adding setup friction before multiplayer. It may also shape expectations around anti-cheat measures in live-service games, as players weigh fairer matches against the need to adjust BIOS settings. Broader impact likely remains limited to that gaming audience, though it could prompt more familiarity with platform security features.