Call of Duty: "Secure Boot: Not Enabled"

Secure Boot not enabled

Your PC does not have Secure Boot on, which Black Ops 7, Warzone and Modern Warfare 4 require. Secure Boot needs UEFI boot mode and a GPT-partitioned drive.

Is Call of Duty down right now? Operational: 11 problem reports in the last hour. If it were down for everyone, this error could come from there; right now it looks normal.

Fix it

How to fix "Secure Boot: Not Enabled"

Press Windows key + R, run msinfo32 and check that BIOS Mode is UEFI and Secure Boot State is On.
If BIOS Mode shows Legacy, check your drive is GPT in Disk Management and convert it with mbr2gpt before switching to UEFI.
In the BIOS Boot tab, set Secure Boot to Enabled, save with F10 and reboot.
Confirm in msinfo32 that Secure Boot is On before relaunching.

From Call of Duty's help pages: support.activision.com, in our words. Checked on 5 November 2026. If the steps do not help, Call of Duty's own support is the next stop.

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