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KevHal's avatar
KevHal
Iron Contributor
Jul 14, 2025

RTT information not available

Hi,

We are having issues collecting RTT information from users in Australia East DC, the data is not being collected at all. This includes the latest Windows App and tried the latest AVD Remote desktop client, its really important we get this data as we have stood up new AVD pools and need to deal with connection issues.

We have tried RTT on UDP and TCP only connections but get the same result. 

Users are just getting the calculating message and never succeeds:

 

When looking in AVD Insights the data is not collected at all and just comes through as -1ms:

We think this may be having a detrimental effect on UDP negotiation connections. 

Has anyone else come across this, we see no issues with the AVD Session Hosts and gone over the firewall, nothing should be blocking the data.

 

Thanks

Kevin

 

 

 

2 Replies

  • Kidd_Ip's avatar
    Kidd_Ip
    MVP
    Jul 14, 2025

    Would suggest checking the following:

     

    • Check WVD Diagnostics Agent

    Run on your session host:

    Get-Service RDInfraAgent, DiagTrack

    Ensure both are running. If not, try restarting.

     

    • Enable Verbose AVD Logs

    Set HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RDInfraAgent key:

    DiagnosticsLevel = VERBOSE

    This might help you uncover why RTT telemetry isn't collected.

    • KevHal's avatar
      KevHal
      Iron Contributor
      Jul 16, 2025

      Hi,

       

      We managed to resolve this. So will place the answer here if it helps anyone else. For some reason the engineer had turned off bandwidth monitoring and auto network detect in RDP Properties, no idea why.  Turned it back on and now we get the data

      Thanks

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