The Microsoft account cannot open the login interface, cannot log in, but the network can access the Internet normally, the solution

My situation:

In fact, the browser can access the Internet normally, but the windows network shows "No Network Connection", and Microsoft accounts such as Office cannot be logged in, and the login interface cannot be displayed normally, prompting " No Network" or similar network problems . Instead of prompting "an error occurred"

Tried the following several times, to no avail:

Reference from: https://www.zhihu.com/question/449928889

1. Change to a different network, including wired and hotspot.
2. IPV4: Change the preferred and alternate DNS to 4.2.2.1 and 4.2.2.2 respectively. Then change back to automatically obtain DNS (before reboot).
3. IPV6: uncheck
4. Restart the "Microsoft Account Sign-in Assistant" service, shut down and boot.
5. After cleaning the registry, shut down and boot.

finally:

Restart the computer, it is normal (not the above point to shut down and then start again). The windows network shows that the icon is normal and there is a network, and you can log in to your Microsoft account.

I don't know if it's enough to just restart the computer, or the previous operation is also useful. . .