(Post updated on 3/26/2020 to add more information about installation process)
We wanted to let you know that we are releasing what we consider a significant update to Exchange Hybrid Configuration...
Updated Mar 26, 2020
Version 5.0
Blog Post
The_Exchange_Team Hoping you might circle back to this thread to help me with a quick question. For Exchange 2013 and new environments setting up Hybrid for the first time, meaning no Federation Trust gets created, where do the EXO-based Organization Relationship find the value for "TargetApplicationUri"? The Demistify Hybrid Free/Busy post states:
"
- TargetApplicationURI - This must match the ApplicationUrI from On-Prem. Example: FYDIBOHF25SPDLT.contoso.com
- You can find the value by cross-checking On-Prem's (Get-FederationTrust).ApplicationUri
"
We've encountered a client environment whose Organization Relationship (the EXO-based one) has blank TargetApplicationUri, and so when we do (in EXO v2 PowerShell) Test-OrganizationRelationship, we get a Watson dump. If we populate TargetApplicationUri with FYDIBOHF25SPDLT.<anyOfTheirAcceptedDomains>, this lets the Test-OrganizationRelationship run without Watson dump, but it then fails saying no matching application with URI <our fabricated attempt at the URI> could be found.
I'm unaware of where else to look for what the TargetApplicationUri should be. Any tips would be greatly appreciated.