Hi @sakuraime ,
People are reporting about the "No internet" access in the Network Connectivity Status Indicator (NCSI) on Windows 10 version 2004 devices, although you can ping Internet resources or browse World Wide Web sites without problems.
Current situation:
Microsoft has known about this issue but haven’t resolved it yet.
It is being investigated by Microsoft currently.
Feel free to provide feedback by using the Microsoft Feedback Hub:
Send feedback to Microsoft with the Feedback Hub app
https://support.microsoft.com/en-us/help/4021566/windows-10-send-feedback-to-microsoft-with-feedback-hub-app
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Best regards,
Leon