Hybrid Configuration Wizard with granular configuration feature is now available

Test-RRR you can download the latest version of the HCW from here: https://aka.ms/HybridWizard

If you already have the HCW installed, it’ll do an automatic update when you run it.

The_Exchange_Team 

This is good, and needed for a long time by Hybrid administrators such as myself. It is always stressful having to run through the whole HCW just to make a small change, or update the certificate.
Unfortunately, today is the very day we are decommissioning our last Exchange 2019 server, having run Exchange on-prem since Exchange 5.5!

If you don't activate the preview feature, you'll not be able to set CMT anymore!

Also, CMT is disabled again and again each time you execute the HCW. I'm still displeased by the fact, that this is the only setting which is not retained on reruns of the HCW. This caused many of my customers headaches in the past, and will cause more headaches going forward.

kumarmukesh

1. You must enable the preview features to not break the current behaviour. This is unexpected.
2. There is no good reason to disable CMT in every run again and again.

Is there any specific reason why HCW add AnonymousUsers permission on the Default Frontend connector? If we remove anonymous permission from the default front-end connector, will there be any issues? If this is not supported configuration, can we create a new receive connector using below command to receive email from Office 365 with anonymous permission checked?

New-ReceiveConnector -AuthMechanism 'Tls, Integrated, BasicAuth, BasicAuthRequireTLS, ExchangeServer' -Bindings '[::]:25','0.0.0.0:25' -Fqdn $hostname -PermissionGroups 'AnonymousUsers, ExchangeServers, ExchangeLegacyServers' -RemoteIPRanges "40.92.0.0/15", "40.107.0.0/16","52.100.0.0/14","104.47.0.0/17" -RequireTLS: $false -TLSDomainCapabilities 'mail.protection.outlook.com:AcceptCloudServicesMail' -TLSCertificateName $TLSCertName -TransportRole FrontendTransport -server $hostname -name "Inbound from Office 365"

Hi Exchange-Team

Is it possible to remove the dependencies for "contoso.mail.onmicrosoft.com" on the “Choose Exchange Hybrid Configuration” option where it is not needed?

• HCW8001 Unable to determine the Tenant Routing Domain
• HCW8092 One or more items failed validation during ‘Hybrid Initialization’ task. Please see log file for details.

2024.01.31 20:38:59.965 WARNING 10310 [Client=UX, Activity=Tenant Data Retrieval, Thread=11] Coexistence domain NOT Found.
2024.01.31 20:44:19.769 ERROR 10241 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Task=Initial, Phase=Configure, Thread=10] Workflow Exception: Unable to determine the Tenant Routing Domain [Task=Initial, Phase=Configure] 
2024.01.31 20:44:19.769 10271 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Task=Initial, Phase=Configure, Thread=10] FINISH Time=2.0ms Results=PASSED (Configuration Complete) 
2024.01.31 20:44:19.770 10270 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Task=Initial, Phase=ValidateConfiguration, Thread=10] START 
2024.01.31 20:44:19.771 ERROR 10271 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Task=Initial, Phase=ValidateConfiguration, Thread=10] FINISH Time=1.0ms Results=FAILED - (Validation Failure) 
2024.01.31 20:44:19.771 ERROR 10273 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Task=Initial, Thread=10] FINISH Time=2157.7ms Results=FAILED 
2024.01.31 20:44:19.772 ERROR 10268 [Client=UX, Page=Configuring, fn=RunWorkflow, Workflow=Hybrid, Thread=10] FINISH Time=2159.7ms Results=FAILED 
2024.01.31 20:44:19.774 ERROR 10025 [Client=UX, Page=Configuring, fn=RunWorkflow, Thread=10] HCW8001 Unable to determine the Tenant Routing Domain 
2024.01.31 20:44:19.783 ERROR 10025 [Client=UX, Page=Configuring, fn=RunWorkflow, Thread=10] HCW8092 One or more items failed validation during 'Hybrid Initialization' task. Please see log file for details.

Ticket-Reference: TrackingID#2401310050005586

• Fix: Tenant Routing Domain "contoso.mail.onmicrosoft.com" added in accepted domains by Microsoft Support

How would I start the new Hybridwizzard?

If I go to the new Exchange admin center | Other features section I find a Link to "Hybrid Setup" but it seems to go to the old EAC and is saying: "Yet to be migrated".

After klicking this it takes much time and opens the old EAC - there is a link to the new EAC. It takes me ot a differnt section as the one i initially used: "Settings | Hybrid setup".

If I click this - it takes me to a Hybridwizzard - but it seems to be the old one.

Marvin_Dickhaus 

If CMT was enabled in last run, to preserve CMT through this HCW run, you can deselect all 4 connectors: Send, Receive, Inbound and Outbound on the Choose what HCW configures page, this will ensure no mailflow configuration is touched in the HCW rerun.

Which option do I need to select, if I add a new OnPrem accepted SMTP Domain to my Exchange Org and want to enable Mailflow, Hybrid F/B, etc. ? 

LabAdmin730 You can choose all the 4 connectors (Send/receive/inbound/outbound) and Oauth/IOC&OrgRel options.

Alternatively, since you are not trying to preserve any existing configuration, don't change anything in the default option provided in "Choose what HCW configures"

Marvin_Dickhaus reply to both your query:

1. By changing the existing behavior, do you mean changing the page where CMT and OCT options can be selected? We have moved the CMT and OCT options to "Choose what HCW configures" page, but by default, those were not selected previously by HCW also.

2. Repeating again, if you don't want mail flow configuration like CMT to change in every run, just deselect all mail flow configuration in Choose what HCW configures and HCW will not touch these configurations.

Since opting out of mail flow (or any configuration for that matter) was not available earlier, HCW used to reset all the configuration as if it was first run. Through this feature, we now have opportunity to preserve hybrid configurations.