Many users are encountering an error while attempting to install the Windows 11 update via the Windows 11 Installation Assistant. When updating the operating system, it displays a specific Error code: 0xa00004000. This is a typical problem for many users, and the error code is the same everywhere. In this post, we’ll go over some of the methods you could take to resolve the problem.
Windows 11 Update Error Code 0xa0000400
The error message shows “Something went wrong. Select Try again, and if that doesn’t work, contact Microsoft for help. Error Code 0xA0000400”. It appears when you try to update your PC using Windows 11 Installation Assistant.
When it comes to the possible sources of the problem, a number of them are well-known: (1) Incompatibility with a virtual box or VMWare tool: If you have the Virtual Box or VMWare tools installed on your previous Windows version, uninstall them before using the Windows Update Assistant to update to Windows 11. If you don’t, you will almost certainly experience the problem! or (2) The following license key has an impact on the workstation upgrade: If you get this error while trying to update a workstation PC to Windows 11 operating system, you should be able to avoid it by replacing the current license key with a generic PRO equivalent.
Let’s talk about the methods using which you can solve the issues on your PC now.
How to Fix Error Code 0xa0000400 on Windows 11
1. Upgrade using Windows 11 ISO
There are many alternative methods available using which you can upgrade your system to Windows 11. You can update your PC using Windows 11 ISO instead of updating it using Windows 11 Installation assistant, as it has very bugs and it will be better to avoid it now.
To begin, obtain a copy of the Windows 11 disc image (ISO) from here. Scroll down the page, select Windows 11, and then click the download button. Wait for registration to complete, then select your preferred language and click the 64-bit download option to begin the download of the Windows 11 disc image. When the file has finished downloading, double-tap it to mount it locally. Now, launch File Explorer and double-click on the virtual driver that appeared after you mounted the ISO file. Now, double-click setup.exe and select Yes. Now, select “Download updates, drivers, and optional features” and press the Next button.
2. Uninstall virtual box or VMWare
You may have the same problem with a similar error code due to incompatibility issues with the virtual box and VMWare. In this scenario, uninstalling the program will be preferable because it is preventing you from upgrading the system. To begin, open the Run dialogue box by hitting the Windows+R keyboard shortcut. Now, type appwiz.CPL and press Ctrl + Shift + Enter to access the Programs and Features menu as an administrator. Now, on the pop-up menu, select Yes. Scroll down until you find VMWare or Virtual Box, right-click on it, and select Uninstall. Now, uninstall it by following the on-screen directions. Check to see whether the problem has been resolved for you.
3. Use Media Creation Tool
If the aforementioned method (just mounting a Windows 11 ISO file) does not work for you, you can always use the MCT (Media Creation Tool) to burn a DVD or convert any flash drive (greater than 8 GB) into acceptable Windows 11 installation media. First, get the Installation media from the link provided below. When you’ve finished downloading it, double-click it and grant access by pressing Yes. Now, select your language and Windows 11 edition before pressing the Next button. Choose a USB flash drive or an ISO file depending on whether you want to create Windows 11 installation media on a flash drive or a DVD. Now, to update and install the system, follow the on-screen instructions.
4. Change license key
Most probably, the issue might be there because of the license. You can upgrade the license key to the Pro version. First of all, open Settings and tap on update and security, now click on Activation and enter the Windows 11 Pro product key. Retry the upgrade to Windows 11 after changing the product key to see if the operation now completes without the same 0xa0000400 error.
Thanks for sticking with us all the way end to the post. Did the methods mentioned above work for you or not? Let us know by dropping a comment in your words down below.