I have a problem with the file "autounattend.xml"

[RaulJourdany]

I am placing the file in my already prepared Windows 11 LTSC iso, everything is updated, but when installing I get the following error "Windows 11 Setup - An error occurred while installing Windows 11", if I place any "autounattend.xml" file I get the error, I tried several of these files, and I still have the same problem, but if I remove this file from the root, the installation proceeds without any problem.

 

[garlin]

Your ISO or image probably has a conflicting answer file somewhere (probably under \Windows\Panther) placed by another tool. By default, NTLite writes the answer file to \autounattended.xml unless you check the "Copy to install image" button.

C:\Windows\Panther\unattend.xml takes precedence over the autounattended.xml, and Windows might try to merge the two configs during the install, which leads to an error.

 

[RaulJourdany]

Your ISO or image probably has a conflicting answer file somewhere (probably under \Windows\Panther) placed by another tool. By default, NTLite writes the answer file to \autounattended.xml unless you check the "Copy to install image" button.

C:\Windows\Panther\unattend.xml takes precedence over the autounattended.xml, and Windows might try to merge the two configs during the install, which leads to an error.

Is there any way to fix this?

 

[garlin]

Is this an image you prepared from a clean ISO, or someone else's image? Does the same autounattend.xml work on a clean ISO? Either the problem is caused by a bad image, or a bad unattend file. Basic testing should confirm which one.

 

[tired-it]

For what it's worth, this issue happens quite commonly for me. And the solution is almost always simply remaking the ISO from scratch with the exact same settings as before.

I wish I knew more about the source of the issue. It is almost as if something in the ISO is breaking while NTLite is working on it. Could NTLite be causing it? I can only speculate. But either way, deleting the ISO project cache, clearing the program cache and remaking the ISO gets me a working file most of the time. It helps to have presets and all the necessary project files and steps saved to streamline the process.