Installing Windows 11 24H2 on Unsupported CPUs: The TPM 2.0 Workaround

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If you've been frowning at Microsoft's strict hardware requirements for Windows 11, particularly its reinforced stance on TPM (Trusted Platform Module) 2.0 as a "non-negotiable standard," here's some news that might allow a grin. Reports have emerged that installing the upcoming Windows 11 version 24H2 on unsupported CPUs is indeed possible—as long as one key requirement is met. Let’s dive into how this works and what it means for users running aging, but still capable, hardware.

What’s the Big News About Windows 11 24H2?

Microsoft has famously mandated that only specific CPUs and TPM 2.0-enabled systems would be compatible with Windows 11—leaving many older, yet functional, PCs out of its ecosystem on paper. However, recent reports indicate you might still manage to install the latest Windows 11 iteration (24H2) without adhering to the CPU restriction if the machine has TPM 2.0 enabled.

How Was This Discovered?​

According to insiders and firsthand reports from users experimenting with unsupported hardware, systems equipped with processors like Intel’s Skylake generation (6th Gen) and Broadwell generation (5th Gen) successfully installed Windows 11 24H2. This was achieved using Microsoft’s Media Creation Tool to download an untouched image of the operating system. Once flashed, the installation went through without any hurdles or blocked wizards, provided TPM 2.0 was enabled.
The revelation is surprising since these CPUs officially do not meet Microsoft’s system requirements for Windows 11. However, as long as the TPM module is operational (and turned on!), the OS installation wizard does not throw up roadblocks.

The All-Important Role of TPM 2.0

With the debut of Windows 11, Microsoft doubled down on securing systems through Trusted Platform Module (TPM) 2.0 hardware. This standard has been around since 2014 and acts as a security-focused microchip integrated onto your motherboard or offered as an add-on slot module. When active, TPM enables features like BitLocker encryption, Secure Boot, and safeguards against firmware attacks.
Even if your CPU is “unsupported,” TPM 2.0 seems to act as a golden ticket for bypassing other stringent requirements during installation.

What Happens Without TPM 2.0?​

Attempting the same installation process on systems with TPM disabled—even if the processors are identical—results in being stopped dead in your tracks. Windows promptly halts the setup process, highlighting the system's incompatibility via a friendly (but firm) pop-up message. Disable TPM, and you'll need to turn to elaborate workarounds to bypass such blocks, something we’ll touch on shortly.

Living with an Unsupported CPU: What’s the Catch?

Here’s the caveat: although you can install Windows 11 24H2 on unsupported CPUs as detailed, Microsoft hasn’t officially sanctioned this as a best practice. While the process technically works, the company still retains the stance that such hardware configurations are “unsupported.” This means:
  1. No Guarantees for Stability or Security Unsupported systems may not receive future cumulative updates, security patches, or driver optimizations.
  2. PC Health Check Reports ‘Incompatible’ Post installation, running Microsoft’s PC Health Check Tool will likely continue reporting the device as incompatible. This has little impact functionally, but it’s a constant reminder that you're running unsupported hardware.
  3. Potentially Limited Updates in the Future Windows Update services, while operational during initial deployment, could restrict or delay updates for these setups in subsequent rollouts.
However, these risks aren’t necessarily new for users accustomed to outliving manufacturer support on their setups. Those who used registry hacks or custom installation media for prior Windows 11 versions (23H2 and earlier) to bypass checks will find the 24H2 method appealingly “official.”

How to Enable TPM 2.0 for Windows 11 Installation

Before hopping into installation, check and enable TPM 2.0 on your PC. Here’s a quick rundown:
  1. Check System Compatibility:
    • Press Win + R to launch the Run dialog.
    • Type tpm.msc and press Enter. The Trusted Platform Module Management screen will show details. Ensure "Ready" is displayed for the status, and the TPM version is 2.0.
    []Enable TPM in BIOS/UEFI Settings:
    • Reboot into BIOS/UEFI by pressing the corresponding key during startup (this is often F2, DEL, or Esc).
    • Look for Security Settings or Advanced Options, and locate TPM, PTT (for Intel CPUs), or PSP fTPM (for AMD CPUs).
    • Enable TPM functionality and save the configuration.
    [
    ]Secure Boot Activation:
    While TPM often takes center stage, Secure Boot, another critical element, should also be enabled from the same BIOS/UEFI menu for the smoothest experience with Windows 11.

Historical Context and Broader Questions

This discovery serves as yet another ripple in the strange saga of Microsoft’s hardware requirements for Windows 11. Earlier this year, the Redmond giant made exceptions by lowering the barriers for specific editions like Windows 11 IoT and LTSC (Long-Term Servicing Channel), where TPM 2.0 and other hardware rules were deemed “optional.” It begs the question: why have restrictive requirements at all?
Critics point out that enforcing rigid criteria builds barriers to adoption, especially for users in regions where upgrading PCs en masse isn't affordable. Meanwhile, proponents may argue that TPM is crucial for modern cybersecurity.
This latest finding, combined with Microsoft’s relaxed stance for niche editions, makes one wonder if these “standards” are as “non-negotiable” as officially stated.

Should You Upgrade on Unsupported Hardware?

The choice depends on your priorities. For enthusiasts and savvy users confident experimenting with quirky hardware, this method offers a chance to keep older systems alive and relevant. However, if reliability, seamless security, or official warranties are vital to you, sticking with officially sanctioned hardware or operating systems might save time and headaches.
For the determined, Microsoft’s Media Creation Tool is the simplest way forward, but always know the risks of skipping explicit compliance.

Final Thoughts

At its core, the ability to install Windows 11 24H2 on unsupported CPUs—while relying on TPM 2.0—is both a workaround and a testament to the resilience of aging hardware. While this development hints at some flexibility from Microsoft, it also underscores the complex dance between innovation and accessibility.
For many old-PC enthusiasts, this is a new ticket to transforming nostalgic hardware into functional machines once again. Just don’t forget: the longer you cling to your unsupported system, the more precarious your update future might become. Happy tinkering!

Source: Neowin Apparently, you can install Windows 11 24H2 on unsupported CPU, but there is a catch
 


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