Hi,
Thank you for posting in Microsoft Q&A forum.
Honestly, Tunnel VPN issue is complex and needs further log analysis for troubleshooting. With Q&A limitation resource, it is suggested to create an online support ticket to get more accurate help. Here is the support link:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding and hope everything goes well with you.
Thanks for your time. Have a nice day!
Best regards,
Simon
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