I created an Investigation -> Activities of failed web request (HTTP Status is >= 400) when accessing to a domain name. In the results, notice TLS web request with HTTP Status = '-'
Unable to run admin commands in the Hub Control Panel web interface - API request failed (403): Forbidden - JupyterHub - Jupyter Community Forum
httprequest - How to fix Http request failure when trying to query the Microsoft Dataverse Web API from Power Automate? - Stack Overflow