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
Hello Mirela_Buru
First of all, Thanks a million, I've solved lots of Hybrid Free / Busy issues by taking help from this blog. However, currently I'm having an issue, I've spent a few hours on it but haven't been able to solve it. Our On-Premise Users can not see Cloud Users free / busy.
- First I found Federation Certificate was expired, I renewed it and recreated federation, Test-Federation is now all good.
- After that I found OAuth Certificate was expired, I was able to renew it and publish to all Exchange Servers, Test-OAuthConnectivity is all good.
- Test-OrganizationRelationship is all good.
- IntraOrganizationConnector is enabled.
- I checked your FB errors table but I couldn't found the error I'm facing.
- I've done tonnes of changes at On Premise OrganizationRelationship populating TargetSharingEPR, Testing with / without WSSecurity, Disabling IOC but no luck. I'm stuck on below error.
- In OWA Network Response for Get-Useravailablity as well as at MS RCA I get error, I suspect this is still related to OAuth between EXO and EX-On-Premise ?
Free/Busy Lookup failed with exception: Autodiscover failed for email address USER@INITIALDOMAIN.mail.onmicrosoft.com with error System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 52.98.32.2:443