Octopus Deploy Server "Failed checking for updates"

We have a few octopus deploy server which are behind some fairly restrictive firewalls. I have noticed that there are some warning in the diagnostic logs as follows :
Failed checking for updates System.Net.Http.HttpRequestException: An error occurred while sending the request. —> System.Net.WebException: Unable to connect to the remote server —> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it

Another machine is gets the same warning except the IP is

An nslookup call to either IP will timeout. When I attempt to browse to those IPs their certificate is ssl768215.cloudflaressl.com and the site just shows “403 forbidden”.

Is this something that we should be concerned about, or is there a settings change we can make to clear up this warning? (We manually update our octopus servers individually , so no automatic update checking is perfectly acceptable for us)


Hi @hardKOrr,

Thanks for getting in touch! Since it’s failing on the upgrade check, disabling that automatic check via the Octopus.Server command line --upgradeCheck=VALUE flag should clear this up for you. This flag is in the configure command and you can reference the following doc page. :slight_smile:

I hope that helps! Let me know how you go or if you have any further questions. :slight_smile:

Best regards,


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