TPM/Secure Boot Disabled Breaking Anti-Cheat
What is this error?
TPM 2.0 or Secure Boot is disabled in BIOS, preventing anti-cheat systems from working on Windows 11. Games using kernel-level anti-cheat will refuse to launch or disconnect.
Common causes
- TPM disabled during initial Windows 11 install using bypass method
- Secure Boot disabled for Linux dual-boot or older driver compatibility
- BIOS update or reset disabled TPM/Secure Boot settings
- user disabled them for overclocking tools that required it
How to fix it
- Enable TPM 2
- 0 and Secure Boot in BIOS
- ensure Windows is installed in UEFI mode with GPT partition
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
If Valorant, Fortnite, PUBG, or other competitive games suddenly refuse to launch or give anti-cheat errors on Windows 11, check your TPM and Secure Boot status. Many gamers disabled these to install Windows 11 on unsupported hardware or for compatibility reasons, but modern anti-cheat systems now require them. To check: press Win+R, type 'tpm.msc', hit Enter. If it says 'Compatible TPM cannot be found', TPM is disabled or missing. For Secure Boot: open System Information (search 'msinfo32' in Start) and check 'Secure Boot State' — it should say 'On'. If either is disabled, go into BIOS. For TPM: look under Security or Trusted Computing. Intel calls it 'Intel PTT', AMD calls it 'AMD fTPM'. Enable it. For Secure Boot: look under Boot or Security and enable it. You also need CSM disabled for Secure Boot to work, and your Windows must be installed in UEFI mode with a GPT partition. If Windows was installed in legacy/MBR mode, you can convert it without reinstalling using the built-in 'mbr2gpt /convert /allowfullos' command (run as admin). After enabling both, reboot and verify with tpm.msc and msinfo32. Games like Valorant (Vanguard anti-cheat) and Fortnite are strict about these requirements on Windows 11.
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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