Hello, Welcome to Microsoft Q&A,
Please check if there any network management software (such as anti-virus software, Firewall, VPN, etc.) is running on your PC. If you still see the same behavior after shutting down the network management software, please open a support ticket through this link: http://aka.ms/hololenssupport.
For network diagnostic tools, please refer to Diagnose HoloLens 2 network issues with Fiddler and Wireshark | Microsoft Learn.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.