Namely, lots of users, after seemingly completing the installation, were prompted with the Windows 10 installation has failed error. They had to start again but the results were the same. This can be a problem, especially if you’re eager to try the new version of Windows, but luckily, there are several methods you can use to fix it in no time. To address this, we prepared a list of possible solutions that can come in handy. In case you’re still stuck with this installation error, make sure to check the steps we provided below.

What to do if Windows 10 installation has failed when using the Media Creation Tool?

If Windows couldn’t be installed, then the issue is most likely your installation media. In that case, we recommended that you download the ISO again and recreate the bootable drive. Many reported their Windows 10 installation has failed in safe OS phase, and this occurs because certain installation components are damaged, so they’ll need to be created again. If Windows cannot install the required files, inspect your hardware, and make sure that there aren’t any hardware incompatibilities.

Why Windows 10 installation failed?

There are several reasons why you might encounter this error message, and it usually appears due to installed components or security software. Connected peripherals can also be a problem, so be sure to remove them before trying to install Windows. Lastly, file corruption could be the cause of this problem as well.

How do I fix Windows 10 installation failed?

As mentioned, many different factors can cause this error. Before we move on to tested ways you can fix this error, we recommend you run some preliminary checks, just to make sure the issue isn’t actually way simpler than you thought.

Restart your device – although frequently overlooked because it’s so simple, restarting gives your system a chance to close off any unnecessary processes and reconfigure, allowing it to work a little better Clean your disk – use the Disk Cleanup utility to get rid of temp or system files that can take up space or interfere with your updates Make sure you meet the system requirements, otherwise, the installation cannot be completed: RAM: 1GB for 32-bit and 2GB for 64 bit Hard disk space: 16 GB for 32-bit and 20 GB for 64 bit CPU: 1GHz or faster Screen resolution: 800 x 600 Graphics: Microsoft DirectX 9 or later with WDDM 1.0 driver Internet access

1. Unplug all peripheral devices

Before starting the update disconnect all your nonessential peripherals. This includes printers, gamepads, external drives, and similar devices. After disconnecting them, start the upgrade process. If the process is successful, connect your devices again.

2. Uninstall the language pack

If you’re having any issues with this solution, be sure to visit our guide and see what to do if you can’t remove keyboard language.

3. Uninstall third-party antivirus

4. Choose to keep only files when asked

5. Rebuild BCD

Another way to fix Windows installation failure is to rebuild the Boot Configuration Data. You can do this via the built-in command-line tool called Command Prompt.

  1. Open the Start Menu and click the Power button.

  2. Press and hold the Shift key and select Restart. SPONSORED

  3. Choose the Troubleshoot option.

  4. Select Advanced options.

  5. Open Command Prompt. Select your account and enter the password if asked.

  6. Run the following commands one by one: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd

  7. This should finalize the repair procedure and you should be able to upgrade your PC without any problems.

6. Upgrade Windows 10 with installation media

7. Perform a clean install

What to do if Windows installation has failed on Windows 11?

For more information, we suggest visiting our guide on how to enable TPM in different versions of BIOS.

What are Windows 11’s requirements?

CPU: 1Ghz, dual-core, 64-bit compatible processor RAM: 4GB Storage: 64GB or more Firmware: UEFI with Secure Boot support TPM: TPM 2.0

If needed, you can even install Windows 11 without TPM, but this might be a security risk, so it’s not recommended.

Which versions of Windows are affected by this issue?

Windows installation has failed message is a generic error, and as such, it can appear on almost any version of Windows. All editions seem to be affected by this issue, and many have reported Windows 11 installation problems, so even the latest version is affected by this issue.

What is a clean install?

A clean install is a process in which you use Windows 11 installation media to reinstall your operating system from scratch. Usually, a clean install means that you’ll format your system drive to have a fresh start without any applications or files. If you choose to do this, we strongly advise you to back up your files beforehand. Fixing the Windows 11 installation has failed installation error is relatively simple, and you should be able to fix it using our solutions. In case the issue is still there, your only option might be to create a bootable flash drive and clean install Windows. Did you find a different solution for this issue? If so, feel free to share it with us in the comments section below.

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