title: Getting unknown error from MQSAgent in BizTalk 2020
body: <p>I've implemented MQSAgent before and it was working. Had to reinstall it on my server. First, the user/name and password are correct. The user is a member of the COM group. After I confingured it, it returns:</p>
  <blockquote>
  <p>T22]:IMQSAgent.IsDataPresentEx() : Encountered NotImplementedException:</p>
  </blockquote>
  <blockquote>
  <p>Reason: The method or operation is not implemented.</p>
  </blockquote>
  <p>The Com service is started. Also checked DTS and everything looks correct.<a href="https://i.stack.imgur.com/JBvke.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JBvke.png" alt="enter image description here" /></a></p>
  <p>I've never received this error before. Any suggestions?  Thanks in advance.</p>