How to enable mobile hotspot in the absence of an external internet connection?

Question

How to enable mobile hotspot in an environment without external internet connection? This also refers to providing services such as SSH or remote access to Windows solely through a local area network (LAN).

I have previously succeeded in activating the mobile hotspot in a network-less environment using this post (https://blog.csdn.net/m0_64649746/article/details/128276420). However, with several Windows updates, I am currently unable to activate the mobile hotspot in a network-less environment.

Despite seeking assistance from Windows support and attempting the steps outlined in this post (https://answers.microsoft.com/zh-hant/windows/forum/all/answers-%E5%88%86%E4%BA%ABwindows-10/97dcfeb1-24ad-42f5-999a-dcc57913b712) (How to set up Windows 10 Mobile Hotspot service to start automatically), I still cannot enable the mobile hotspot in a network-less environment.

Version:

Windows 10 IoT Enterprise LTSC (21H2)