Symptoms
Email messages not being generated for K2 tasks
Diagnoses
Email events are working, but task notifications are not sending. The following error is logged:
"42296949","2015-04-24 13:33:54","Error","MessageBus","61012","ConnectionError","ExchangeWebServicesOrigin","61012 Exception from message source k2service@denallix.com: System.Net.WebException: The request failed with HTTP status 401: Unauthorized.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.InvokeAsyncCallback(IAsyncResult result)
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.InvokeAsyncCallback(IAsyncResult result)","","","USSFA1K2BPPAP01:D:Program Files (x86)K2 blackpearlHost ServerBin","42296949","a9bc4faf92714cccb383ef564dfb7240",""
Resolution
Customer discovered that some changes where made to Office 365 which resulted in the Exchange Web Service URL becoming inaccessible. After receiving the new Exchange Web Service URL and updating it using the connection string editor, task notification are now working again.
