Windows 10: Windows 11 Update error

I am trying to install windows 11 on my computer. When I run the Windows 11 Installation Assistant, it says something went wrong. I have tried multiple times and it still shows the same error, 0xa0000400. I have tried troubleshooting a lot and nothing has worked. I am really confused about what to do next. Does anyone have any ideas on what I should do to fix this?

:)

 

Windows 10 Upgrade Error 11/11/2015

Hi Marianne,

Thank you for posting in Microsoft Community, we appreciate your interest in Windows 10.

As you are facing issues with installing the updates, do let us know the following to assist you better:

• Were you able to see any error notification along with the error code?
• What is the make and model of your device?
• Are you able to boot in to the desktop?

This issue might be due to the anti-virus software or corrupted Windows Update Components.

I suggest you to hard reboot the computer and perform the below.

Step 1: Try to eject all the external devices connected to your computer except mouse and keyboard, reboot the computer and check if the issue persists.

Step 2: I suggest you to uninstall the anti-virus software installed on your device and check for the updates.

If the issue still persists,

Step 3: I suggest you to run the Windows Update troubleshooter and check.

Resolves problems that prevents you from updating windows.

Steps:

• Press Windows key and type
  Troubleshooting.
• Click on Troubleshooting and click on
  View all in the left pane.
• Select Windows Update to run the Windows Update Troubleshooter
  and follow the on-screen instructions.

For further reference: How to: Troubleshoot common Setup and Stop Errors during Windows 10
Installation

Hope it helps. Kindly update the status of this issue, we will be happy to help you further.

 

Who has seen this vista update error

When you go to Windows vista update and it tell you to update a driver that you have already updated. Then it says failed to update and gives you the error code that tell you that you already have a never version than that. WTF? Why in the world would it be trying to updated something with an older driver. Well the only way to get it out of your windows update list is to go uninstall what ever that driver is then run the update and install it. Then run the newer drivers again.

Well I still can't get the Nivida Network Bridge to disappear out of the list. I uninstall the one in device manager and go to the update and before it's even done with that. Vista is automatically installing a newer version than is in the Vista update list.......

 

Windows Updates failed to instal

I'm not sure how differant XP media center Edition is but you could clear the history \ cache if these folders are there.

Step 1 Register DLL files.

=================

By trying this step, we can check if the update engines are working properly.



1. Close all instances of Internet Explorer.

2. Click Start and Run, type "Regsvr32 atl.dll" (without quotes) in the Open box and click OK.



Note: There is a space between regsvr32 and atl.dll



3. Similarly, one by one, register the files listed below:



Regsvr32 msxml3.dll

Regsvr32 wuapi.dll

Regsvr32 wuaueng.dll

Regsvr32 wuaueng1.dll

Regsvr32 wups2.dll

Regsvr32 wucltui.dll

Regsvr32 wups.dll

Regsvr32 wuweb.dll

Regsvr32 qmgr.dll

Regsvr32 qmgrprxy.dll

Regsvr32 jscript.dll



Note: If you encounter errors while registering any of these files then skip that file and continue with the next one.



If the issue persists, let's move on to the steps below to verify Windows Update services and temporary folders.



Step 2 Verify the relevant Windows Update services.

=========================================

1. Click Start->Run, type "services.msc" (without quotation marks) in the open box and click OK.

2. Double click the service "Automatic Updates".

3. Click on the Log On tab, please ensure the option "Local System account" is selected and the option "Allow service to interact with desktop" is unchecked.

4. Check if this service has been enabled on the listed Hardware Profile. If not, please click the Enable button to enable it.

5. Click on the tab "General "; make sure the "Startup Type" is "Automatic" or "Manual". Then please click the button "Stop" under "Service Status" to stop the service.

6. Then please click the button "Start" under "Service Status" to start the service.

7. Please repeat the above steps with the other services:



Background Intelligent Transfer Service

Event Log

Remote Procedure Call (RPC)



Note: Event log service is enabled on all of the hardware profiles; this service does not have an option to enable or disable on certain hardware profile.



If it still does not help, let's proceed to step 3.



Step 3 Reload the Update temporary folders.

===================================

One possible cause is that the temporary folder for Windows Update is containing corrupted files. Let's erase all the files there to get the system clean.



1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net stop WuAuServ



2. Click Start, Run, type: %windir% and press Enter.

3. In the opened folder, rename the folder SoftwareDistribution to Sdold.

4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net start WuAuServ



Please test the Windows Update website and let me know the result. If the issue persists, to clarify the issue and provide more accurate troubleshooting steps, please assist me in collecting the following information.