title: Connection with the server was terminated abnormally
body: <p>I have a django-python server with a VBA front end connecting using winhttp and REST API. So, in this case the requests sent and received are controlled by us and per-determined.</p>
  
  <p>A while ago when our servers were updated to TLS from SSL, we had a lot of users facing "connection terminated abnormally" error when using VBA Winhttp and REST APIs. We used the existing microsoft article to update machines of users on windows 7 and problem was resolved. More recently, I have had a few cases of same error where the patch/update have been applied before or its application did not fix the issue.</p>
  
  <p>I don't see their incoming traffic on our server log at all (some are using proxy servers) but even proxy server ip is not there. </p>
  
  <p>I am trying to find out where to look or what else can cause this issue so I can track it down. Any idea/suggestion is appreciated.</p>
  
  <p>Source : <a href="https://support.microsoft.com/en-us/help/3140245/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-wi" rel="nofollow noreferrer">Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows</a></p>