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Pallind's avatar
Pallind
Copper Contributor
Feb 05, 2021

Problem with Azure VPN Point-to-site

Behaviour: When connecting to P2S VPN the computer reports loss of internet connection(DnsProbe/WebProbe not responding) on the actual local network(home or other). Browsing internet still works an...
  • Pallind's avatar
    Pallind
    Sep 27, 2021

    Pallind 

    So... We continued our troubleshooting with Microsoft Support since we reported the same issue in 2 other environments and I can happily inform that after another month of tracing and investigation of the NCSI logs we were presented with the following solution:

    Symptom:
    While on P2S VPN, client machines report connectivity loss but browsing and DNS still work.  

    Cause:
    According to the NCSI trace, the DNS probe was not using proxy but going Direct instead.

    Resolution:
    Enabled the Specify Global DNS via Registry Key which seems to have solved the problem for now.

    Registry Key modified: RegPath: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator

    RegKey: UseGlobalDns=1

    Type: DWORD

     

    We are now running this with three different environments/customers and we have zero reported issues from the when now working over Azure VPN.

     

    Case closed!

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