How to Install Windows 11 on an Unsupported PC

The hardware requirements of Windows 11 are though. With the tips in this article, you can bypass the installation barriers and install Windows 11 on your old PCs.



Windows 11 cannot be installed on every PC, unlike earlier versions of Windows. Even though the upgrade from Windows 10 to Windows 11 is free, millions of Windows 10 PCs have been left without Windows 11 due to its high system requirements.

Also, those who want to use a local Windows account instead of signing into Microsoft every time they start their PC will be stuck during the installation as well. Because when Windows 11 was first released, it was possible to sign in with a temporary local user account. But as of Windows 11 22H2, even this method no longer works. With the tips below, you can get around the requirements check and the obligation to have an online Microsoft account. You can still install Windows 11 despite all the barriers.

Enable the missing functions

When you try to install Windows 11, the error “This PC doesn’t currently meet all the system requirements for Windows 11” may appear. First, use Microsoft’s PC Health Check program or, better yet, the third-party software WhyNotWin11 to find out what’s lacking. When these programs show compatibility errors, it’s easy to see what you need to do exactly.

The most important hardware requirement for Windows 11 is a 1 GHz or faster 64-bit CPU or SoC with 2 or more cores. RAM should be a minimum of 4 GB, and the storage should be 64 GB. Windows 11 cannot be normally installed without meeting these requirements. Moreover, the installation may still fail if the “Secure Boot” is disabled, the computer uses the wrong boot method, or the hard drive uses an outdated partitioning scheme.

In any case, first verify if anything that is not approved by WhyNotWin11 or PC Health Check can simply be enabled, such as the Secure Boot. If this does not help, follow the instructions below.

But be mindful: If you install Windows 11 without following the steps, you may see errors, system crashes, or even problems with your hardware. Microsoft will also warn you about the warranty and the possibility of not receiving updates.

Bypass hardware hurdles and online restrictions

Windows 11 installation may fail due to a missing TPM security chip in version 2.0 or if you cannot find the Secure Boot key. Your processor may not be officially compatible with Windows 11 even if the core count and clock frequency are sufficient. Or you may not have linked your PC with a Microsoft account. Nevertheless, you can use Rufus to bypass all these problems.

This free tool and a USB stick with at least 8 GB of storage are the easiest way to get around the requirement of TPM 2.0, Secure Boot, a compatible processor, and a Microsoft account to log in. With Rufus, you can even bypass the 4 GB RAM limit. However, there is a reason for this limit. Windows 11 can run slow with less than 8 GB of memory. If you don’t have a suitable USB stick, the processor requirements and the TPM restriction can alternatively be bypassed using the method in the next paragraph. Now let’s see what needs to be done in the Rufus:



  1. Download the Windows 11 ISO file to your desktop.
  2. Insert a USB stick of at least 8 GB. Note: All data stored on it will be deleted.
  3. Download and install Rufus by clicking here, then run the program.
  4. In the Rufus window, make sure that the inserted USB stick is selected under “Drive.”
  5. Click “Select” and double-click on the Windows 11 ISO file.
  6. Click on “Start“.
  7. In the menu that appears, make sure that “Remove requirement for Secure Boot and TPM 2.0” is checked. Although not explicitly stated, Rufus also removes the “Your Processor is Not Supported” error with this option. If you also want to bypass the online Microsoft account requirement, check “Remove requirement for an online Microsoft account.” Note that the second option will only appear on a Windows 22H2 ISO file of version 11H2. If this setting does not appear, then you do not need it. You can install Windows 11 without a Microsoft account using the steps below.
  8. Click Ok and then Close when the process is complete.
  9. Open Windows Explorer with the shortcut Win + E, click on the USB stick on the left, and then double-click on the setup or setup.exe file.
  10. Follow the instructions to install Windows 11 while not deleting your data and programs. Note: If you want to use an offline local Windows account and you checked the appropriate box in Step 7, you must disconnect from the network during the installation.

Bypass TPM and processor compatibility checks

If your computer does not have a supported processor, Windows 11 will not start the installation. Upgrading the hardware is often unnecessary or too expensive. However, Microsoft has created a registry workaround that will enable Windows 11 to install in situations like this. This method also allows you to bypass the TPM.

  1. Press the Windows key + R keyboard shortcut.
  2. Type “regedit” and press Enter.
  3. After clicking Yes, double-click each of HKEY_LOCAL_MACHINE > SYSTEM > and Setup.
  4. If the “MoSetup” entry appears under Setup, click it, then on the right side of the window, click AllowUpgradesWithUnsupportedTPMOrCPU and proceed to step 7.
  5. Otherwise, right-click on Setup. Then select New and Key, type MoSetup, and press Enter.
  6. Then, right-click MoSetup, click New, select “DWORD (32 bits) value“, enter “AllowUpgradesWithUnsupportedTPMOrCPU” without spaces, and press Enter.
  7. Press Enter again and change the value “0” to 1 in the pop-up window. After that, click OK and X.
  8. Download the Windows 11 ISO file to the desktop.
  9. Double click on the ISO file.
  10. Double-click on the setup or setup.exe file.
Windows 11 warning

The Windows 11 upgrade has now been completed. Follow the on-screen instructions. If the above trick doesn’t work, try another method to bypass the TPM check. A warning message like the one in the picture above may appear during the upgrade if the computer does not meet the system requirements of Windows 11. You should be aware that Windows 11 will not work properly on a device like this, and there is no guarantee that you will receive any updates. Install at your own risk!

If the In-Place Upgrade described above doesn’t work, your only option is to reinstall Windows 11. You can reinstall with Rufus by bypassing the TPM and secure boot. To do this, follow the instructions in the “Remove requirement for Secure Boot and TPM 2.0” section above, up to and including step 7. Then boot your computer from the USB stick and follow the steps given earlier to finish the installation.