How to update Windows 11 22H2 to 24H2 on unsupported PC?

Indeed, Windows 11 24H2 has strengthened the system requirement check. For old PCs like yours that do not have TPM 2.0 and CPU that does not support it, the official will not push updates, so you can only upgrade manually. However, you don’t need to do a clean installation. You can completely upgrade Windows 11 22H2 to 24H2 in-place. As long as you use the right method, your data and software can be retained.

Here is a command line method to bypass restrictions. No third-party tools are required. You can directly use Microsoft's official Windows 11 24H2 ISO for upgrade installation.

Step 1: Download Windows 11 24H2 ISO

• Visit Microsoft's official page and download the latest Windows 11 24H2 ISO (you can use the F12 console to disguise as Linux to get a direct link).
• After the download is complete, right-click the ISO file, select Mount, and then write down the drive letter of the virtual optical drive, such as D:.

Step 2: Modify the registry to bypass TPM and CPU restrictions
    Win + R Enter regedit and press Enter to open the registry editor.

• Navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup

Right-click in the blank space on the right → Create a new DWORD (32-bit) value and name it:

AllowUpgradesWithUnsupportedTPMOrCPU

Double-click it, change the value to 1, and then close the registry.

Step 3: Start the upgrade using the command line
Win + X, open Terminal (Administrator mode) or PowerShell (Administrator).
Enter the installation directory of Windows 11 24H2 ISO (assuming the virtual optical drive is D:):

D:
cd setup

Directly run the upgrade command that bypasses hardware detection:

setup.exe /product server /compact ignore /noreboot /auto upgrade /dynamicupdate disable

Here /auto upgrade allows it to keep files and software, and /dynamicupdate disable allows it to check system requirements without connecting to the Internet and upgrade directly.

This method successfully bypasses TPM 2.0 and CPU restrictions by modifying the registry + command line installation, and upgrades Windows 11 22H2 to 24H2 in-place, without lossy upgrades, without USB, and without third-party tools. In this way, you can keep your old PC using the latest Windows 11 version, saving the trouble of reinstalling, safe and clean!