EDIT 9/19/2023: This blog post has received significant update.
In this second part of the Demystifying Hybrid Free/Busy, we will cover troubleshooting of Hybrid Free/Busy scenarios, more specifica...
Updated Sep 19, 2023
Version 16.0
Blog Post
Hi Mirela_Buru
Your help was great and helped me figure out our main problem. We used a service to help us with setting up hybrid, they had us change our on-prem autodiscover dns record to point to outlook.com before we ran the wizard. I changed it back to our on-prem ip address after the wizard was run initially. After I ran the wizard again (with the correct autodiscover record) we are now seeing on-prem free/busy for our exchange 2013 users. We have exchange 2010 and 2013 on-prem and unfortunately we are unable to see the exchange 2010 users free/busy. The free/busy troubleshooter comes up with the error message below when I point to an exchange 2010 mailbox:
Any ideas where I should look next?
Performing Free/Busy Test. See guidance about the Hybrid Configuration Wizard at http://aka.ms/HCWFree/Busy test failed
Test Steps
Determining where the source mailbox is hosted.The check to determine if the source mailbox is hosted in Office 365 completed successfully.
Additional Details
Determining where the target mailbox is hosted. The check to determine if the target mailbox is hosted in Office 365 completed successfully.
Additional Details
The Microsoft Connectivity Analyzer is attempting to test Autodiscover for xx .Autodiscover was tested successfully.
Test Steps
Verifying connectivity to the specified endpointSuccessfully verified pass-through connectivity.
Additional Details
Verifying connectivity to the specified endpointSuccessfully verified pass-through connectivity.
Additional Details
Performing Free/Busy LookupFree/Busy Lookup failed.
Additional Details
Free/Busy Lookup failed with exception: Proxy web request failed. , inner exception: System.Web.Services.Protocols.SoapHeaderException: An error occurred when verifying security for the message. at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult asyncResult) at Microsoft.Exchange.InfoWorker.Common.Availability.Proxy.Service.EndGetUserAvailability(IAsyncResult asyncResult) at Microsoft.Exchange.InfoWorker.Common.Availability.FreeBusyApplication.EndProxyWebRequest(ProxyWebRequest proxyWebRequest, QueryList queryList, IService service, IAsyncResult asyncResult) at Microsoft.Exchange.InfoWorker.Common.Availability.ProxyWebRequest.EndInvoke(IAsyncResult asyncResult) at Microsoft.Exchange.InfoWorker.Common.Availability.AsyncWebRequest.EndInvokeWithErrorHandling()