TPM

[Star112]

upgrade tpm to download windows 11.

[Paul_Tikkanen]

What model processor does your PC have?

Some models can have the TPM 1.2 updated to 2.0, but that still won't make any difference if the processor cannot be upgraded to one that meets Microsoft's minimum W11 processor requirements.

If you cannot install a supported processor (which you probably can't, or the motherboard would have already had a TPM 2.0 security device installed), and if you are happy with your PC and If you are interested in installing W11 24H2 on your PC as is, watch this video:

How to install Windows 11 24H2 on Unsupported PC (Early Access) 2024 (youtube.com)

Download the W24H2 ISO file and use that (3rd option).   

Download Windows 11 (microsoft.com)

You can download the free 7-Zip file utility from the link below.  The top line is for 64 bit.

7-Zip

You'll have to repeat this procedure each October when Microsoft rolls out the new builds because a PC that does not meet Microsoft's minimum W11 hardware requirements will never automatically get the update to the next build.

Other than that, your PC will continue to get the monthly cumulative and other updates.

That's only a minor inconvenience to have continued OS support beyond October of 2025.

Only the PC's listed in the link I posted in the discussion below support a TPM 1.2 to 2.0 upgrade:

https://h30434.www3.hp.com/t5/Business-Notebooks/How-to-update-tpm-from-1-2-to-2-0/m-p/9205712