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Business Process Automation Platform

SAP Business One Connector – Schema refresh fails with error “HTTP status 405: Method Not Allowed”


When you click ‘OK’ after adding a new connection in the SAP Business One Connector global configuration you may get the following error message when it tries to create the schemas:

Error: System.Net.WebException: The request failed with HTTP status 405: Method Not Allowed


The SAP Business One Connector web service requires that Windows Communication Foundation (WCF) Activation to be installed.


  1. On Windows Server 2008: Start -> Server Manager -> Features and click Add Features to bring up the Add Features Wizard.
  2. Under .NET Framework 3.0 Features -> WCF Activation, select HTTP Activation then click Next and follow the instructions to complete the installation.
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