Older hardware comes with TPM 1.2 or even without it. Sometimes it doesn’t support secure boot. Microsoft insists that these requirements will make computing much safer and will break the limitation of new software being developed. Although Microsoft has promised to review the hardware requirements again, it can’t be said for certain that these requirements will be lifted in the future. There are some exceptions to this. As mentioned in the hardware requirements list for Windows 11, Microsoft states the following: This means that Windows 11 will be able to run without TPM and secure boot checks but they will be pre-approved by Microsoft. Anyway, if you have an older system and are getting the following error, we have a solution for you: When you boot from a bootable Windows 11 image, you will get the above mentioned error. Let’s discuss the solution to this issue.
Bypass TPM and Secure Boot check using Registry
To bypass TPM and secure boot, follow the instructions below.
Disable TPM and secure boot check by modifying the ISO
You can also modify the Windows 11 ISO image such that it does not check for TPM and secure boot while installing. This can be done if you want to install Windows 11 on multiple computers. For this to work, you will need to have both Windows 10 ISO and Windows 11 ISO. Open Windows 10 ISO and go to the sources folder. Copy the file named “appraiserres.dll” and replace this file in the Windows 11 ISO. The resulting Windows 11 ISO will automatically bypass the TPM and secure boot checks enforced by Microsoft.
Conclusion
I have tested both of these methods in the latest release of Windows 11 Insider Preview and both of them work fine. While TPM and secure boot are important components of Windows 11, both of these should be used for secure and safe computing. If you are setting up a lab environment where security is not a big concern, you can play around with the Windows 11 setup and even install it on older hardware. Have you installed Windows 11 on your computer? What are your experiences with this new Operating System from Microsoft?
