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    Nintex Knowledge Base

    Error "The underlying connection was closed. An unexpected error occurred on a receive"

    When running a web request in a workflow in SharePoint 2016, the request might fail and the following error might occur: The underlying connection was closed: An unexpected error occurred on a receive.

    1. Open IIS.
    2. Open the configuration editor for each site running Nintex workflows.
    3. Open ServicePointManager and set expect100Continue to False.