Windows 11 install without TPM - How to bypass prerequisites check A practical guide to creating installation media that can skip CPU, TPM and UEFI checks using MediaCreationTool.bat, and what risks you should understand before proceeding

If your PC does not meet Microsoft’s official Windows 11 requirements (TPM 2.0, UEFI + Secure Boot, listed CPU families), it is still possible to build installation media that bypasses those checks. The MediaCreationTool.bat project automates the creation and modification of Microsoft installation media and can inject files and patches to skip setup checks during boot or upgrade. Read this guide carefully — it explains the steps at a high level and calls out the support and security implications you must accept before attempting this procedure.

The tool can be found on GitHub at this link, together with an extended documentation explaining the modifications it can make to the media (auto upgrade scripts, patched setup files, and optional bypasses).

Step-by-step

Here's how you can use the MediaCreationTool.bat tool.

• Download the tool. Open the project page and either clone the repository or download the ZIP archive to your machine. Verify the files and read the README to understand the available presets and options.
• Open a Command Prompt (with administrative rights). The script requires elevated permissions to work its magic.
• Run the tool. Execute the tool by launching the main batch file (type its name and hit Enter).
• Choose a preset. The project offers several presets such as Auto USB, Auto ISO, or Auto Upgrade. Each of these settings will automatically bypass the TPM/CPU/BIOS requirement checks, therefore there's nothing to do other than select the one that best suits your scenario and hit Enter to start the install/update process.
• Let the script build and patch the media. Once started, the tool will create the installation USB or ISO and patch setup components to bypass the Windows 11 setup checks during boot or during in-place upgrade.

What the tool actually changes (summary)

• It can add an auto.cmd helper for automated upgrades and edition switching.
• It may write sources\EI.cfg or sources\PID.txt to control product edition prompts.
• It includes an option to patch boot/setup components (e.g., winsetup.dll inside the boot WIM) to remove the Windows 11 setup checks when booting from the media.

Why this works

Windows setup enforces hardware requirements via checks in boot/setup components. If those checks are removed or bypassed in the installation media, the installer will no longer block on TPM/CPU/UEFI constraints. The batch wrapper automates safe creation of official media and the controlled insertion of helper files and, optionally, patched setup binaries so the installer can proceed on unsupported hardware. :contentReference[oaicite:5]{index=5}

Risks, support and update implications

• No official support: Microsoft explicitly warns that installing Windows 11 on devices that do not meet minimum system requirements is not recommended. Devices installed this way may not receive updates, may show a watermark and are not eligible for support; if problems occur, Microsoft recommends rolling back to Windows 10.
• Security limitations: bypassing TPM/UEFI/Secure Boot removes or weakens platform security features (BitLocker key protection, device attestation, virtualization-based protection). Your system will be more exposed to firmware/boot-level threats and some security features will be degraded or unavailable.
• Updates may be blocked or limited: Microsoft has previously restricted feature updates or flagged unsupported devices; future cumulative updates or major feature updates may fail or be withheld on unsupported hardware. This can leave the device vulnerable in the long run.
• Warranty/manufacturer support: Running an unsupported OS can void vendor warranties or diagnostic support in some cases.
• Integrity of patched files: Patching setup binaries is a change to Microsoft’s supplied files; only use patches from trusted sources and always verify checksums whenever practical.

Best practices and safer alternatives

• Prefer enabling TPM/UEFI if available: Many systems shipped with TPM/fTPM or UEFI support that is simply disabled in firmware. Enabling these options in BIOS/UEFI is safer than bypassing checks.
• Use the tool on test machines first: Validate the modified media on non-critical hardware before touching production devices.
• Keep full backups: Always back up data (image or file backup) before attempting an upgrade that modifies system files or firmware settings.
• Consider a clean install: If compatibility is problematic, a fresh clean install may be more reliable than an in-place upgrade; you can then restore data and apps from backups.
• Plan for long-term security: If the device will be used long term on a network, consider hardware replacement for a supported platform to avoid accumulating technical debt and security risk.

Conclusion

MediaCreationTool.bat automates and simplifies creation of custom Windows installation media and can embed bypasses for Windows 11 setup checks, enabling installation on unsupported PCs. The tool is powerful and convenient for testing, lab use, or occasional upgrades on legacy hardware — but it carries real downsides: lack of official Microsoft support, potential loss of security features, and possible update restrictions. If you decide to proceed, follow the repository README carefully, test on non-critical hardware, and keep complete backups.

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