This issue seems to be common in insider builds of Windows 11, particularly with Dev insider builds.

The usual situation is that this tool opens and closes immediately. However, sometimes you may meet the common problem - Windows 11 Installation Assistant not working. Then, you need to run Windows Installation Assistant as administrator. To get this tool, you can click Download Now under Windows 11 Installation Assistant on the Microsoft website. To use it for Windows 11 update, you should have a Windows 10 license and the PC must run Windows 10, version 2004 or higher.

That is, you can upgrade Windows 10 to Windows 11 with this Microsoft tool. Windows 11 Installation Assistant offers you a good option to install Windows 11 on your computer that you are using currently. Windows 11 Installation Assistant Closes Automatically

How to Fix Windows 11 Installation Assistant Not Opening.

Windows 11 Installation Assistant Closes Automatically.

How to fix the common issue of Windows 11 Installation Assistant not opening? Take it easy and you can find solutions from this post on the MiniTool website. If you try to upgrade Windows 10 to Windows 11 with Installation Assistant, this tool may close automatically.

Windows 11 compatibility check tool