Need advice to install Windows 11 25H2 on unsupported PC

If your PC is blocked from installing Windows 11 25H2 due to missing TPM 2.0, unsupported CPU, or insufficient RAM, one of the most effective and free workarounds is to modify the Windows 11 ISO itself before installation. This method involves replacing or removing the appraiserres.dll file in the ISO's sources folder. This is the component responsible for enforcing hardware compatibility checks during setup.

How to Install Windows 11 25H2 on unsupported hardware

1. Visit the official Microsoft ISO download page.

Under “Download Windows 11 Disk Image (ISO)”, select Windows 11 (multi-edition ISO) and download it.

2. Double click the ISO and mount it.

3. Navigate to sources folder of mounted Windows 11 25H2 ISO.

4. Find the file named appraiserres.dll and delete it.

5. Replace it with a dummy or bypassed version. Use appraiserres.dll from a Windows 10 ISO (located in its sources folder).

6. Download and install the Windows ADK to get oscdimg.exe.

7. Run the following command in Command Prompt (adjust paths accordingly):

oscdimg -m -o -u2 -udfver102 -lWIN11_24H2 -bC:\Win11Patched\boot\etfsboot.com C:\Win11Patched C:\Win11_25H2_BYPASS.iso

8. Once it is done, burn the ISO to USB so you can now install Windows 11 25H2 on an unsupported PC.

By using this approach, you can create a bootable ISO that skips all official checks and works just like a standard installer.