blake.duffey's Avatar


13 Sep, 2017 06:14 PM

Have deployed Octopus 3.17 in a dev/test environment in preparation for a migration/upgrade. When connecting from Chrome I get this error: ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY

I do not see this from IE.

I am not aware of any ciphers/encryption issues with Octopus, so I figured I'd start here.


  1. Support Staff 1 Posted by Daniel Fischer on 14 Sep, 2017 04:41 AM

    Daniel Fischer's Avatar

    Hi Blake,

    Thanks for getting in touch! We have not seen this issue show up here before, but after a little google-fu we found the following page:

    I found the following to also be quite informative here:

    If the above fail to remedy this issue, I would need to see the output from the chrome Dev tools security tab to get some further information.

    Let me know how you go here, or if you have any further questions.

    Best regards,

  2. 2 Posted by blake.duffey on 18 Oct, 2017 01:48 PM

    blake.duffey's Avatar

    Thanks for your help. After evaluating this does look like a deprecated protocol that we have decided to simply turn off.

    Thanks very much.

  3. Support Staff 3 Posted by Daniel Fischer on 18 Oct, 2017 10:12 PM

    Daniel Fischer's Avatar

    Hi Blake,

    No worries! Please feel free to get in touch at any time. :)

    Best regards,

  4. Paul Stovell closed this discussion on 31 Jan, 2018 07:53 PM.

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