Windows 10: 0xa0000400 error code when updating to 20H2

Running: Windows 10 Pro Education 1903

Using: Windows update assistant

Have tried:

*Windows Update Troubleshooter

*Closed skype

*disconnect everything from USB ports

*Disk cleanup

*System maintenance

submitted by /u/sigedigg
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:)

 

Error of 0xa0000400 updating Windows 10.

* Original Title: Error of updating

I try update Windows 10 on my laptop, and then go something wrong.

Code of problem is 0xa0000400. Can You help me please?

 

Error of 0xa0000400 updating windows7 to Windows 10.

Hi Alex,

It's unfortunate that you are facing this issue. We'll certainly assist you to resolve it.

Share this information to assist you better.

• How are you upgrading to Windows 10? Is it through Windows update or ISO media?

We suggest you to refer the suggestions given by Andre Da Costa from the below link and check if it helps:

free upgrade error code 0xa0000400

Updating to Windows 10 error code 08x00704DD - 0x90016

Reference : How to Fix Windows 10 Setup Failure:

How to: Fix Windows 10 Setup Failure

Hope this helps, for further assistance, you can post your query in Microsoft Community

 

Windows 10 Anniversary Update Error Code 0xA0000400

I'm running Windows 10 Education (Build 10240), and when I attempt to manually update to the Anniversary Edition (Build 14393), I get an error code 0xA0000400. The update does not even attempt to install, as soon as I click "update now" it fails immediately
with this message.