Windows 11 without TPM 2.0: what are your options?

Step 1: Enable firmware TPM

Enter UEFI setup (Del or F2 at startup) and look for Intel PTT (Platform Trust Technology) or AMD fTPM, usually under Security or Advanced. Enable it, save and run PC Health Check again.

Also enable Secure Boot and make sure the disk uses GPT.

Step 2: Microsoft's official upgrade option

Microsoft documents a registry value that allows upgrading PCs with TPM 1.2 or an unsupported CPU: HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup → DWORD AllowUpgradesWithUnsupportedTPMOrCPU = 1. Then run setup.exe from the mounted ISO.

TPM 1.2 is still required with this method.

Step 3: Rufus for a clean install

Rufus can create a USB drive that removes the TPM, Secure Boot and RAM checks. After clicking Start, tick 'Remove requirement for 4GB+ RAM, Secure Boot and TPM 2.0'.

Risks of unsupported installs

Microsoft states that unsupported PCs are not guaranteed to receive updates, and a watermark may appear on the desktop. For older hardware, staying on Windows 10 with Extended Security Updates or upgrading the PC can be safer.

• No guaranteed security updates
• Possible driver problems
• Desktop watermark