This article is intended to be a knowledge base of all Errors and Warnings, Causes and Solutions documented in all stages/components of Azure BizTalk Services: different stages of development, deployment, runtime, setup and configuration…


  • Unhandled Exception: System.ServiceModel.CommunicationException: Unable to reach via TCP (9351, 9352) or HTTP (80, 443)
  • The remote server returned an error: (401) Unauthorized.
  • The remote server returned an error: (400) Bad Request.
  • The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
    • It seemed there must be an issue with the certificate I had deployed to the BizTalk Services on Azure. Executing the following in the developer command prompt: makecert -pe -r -n “CN=<yourservicename>” -e “01/01/2015″ -ss my “. I then exported this from my certificate store and re-imported it into my trusted root store.
  • Error: An error occurred while deploying the agreement. Details: Service encountered an unknown exception... New!



This section is intended to be a knowledge base of all Azure BizTalk Services that are available:

See Also

Read suggested related topics: Another important place to find a huge amount of Azure BizTalk Services related articles is the TechNet Wiki itself. The best entry point is Azure BizTalk Services resources on the TechNet Wiki.

If you are also looking for BizTalk Server related articles, the best entry point is BizTalk Server Resources on the TechNet Wiki.