Legacy Dev Forum Posts

 View Only

Sign Up

Authentication failing for Code Authorization OAuth in custom app integration

  • 1.  Authentication failing for Code Authorization OAuth in custom app integration

    Posted 06-05-2025 18:14

    mawt | 2018-08-30 15:11:58 UTC | #1

    Hi,

    We're seeing some errors today when our custom app integration is trying to authenticate. Our logs files are showing the following:

    Trace: System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Authentication failed because the remote party has closed the transport stream.

    Was working yesterday, and now failing. I couldn't see anything related to this in the August 29th change log. Has there been any other changes made overnight that aren't documented?


    tim.smith | 2018-08-30 15:08:31 UTC | #2

    This is most likely because you aren't using TLS 1.2. Support for TLS 1.0 was recently disabled.


    system | 2018-09-30 15:08:31 UTC | #3

    This topic was automatically closed 31 days after the last reply. New replies are no longer allowed.


    This post was migrated from the old Developer Forum.

    ref: 3463