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JackLee1222's avatar
JackLee1222
Copper Contributor
Sep 11, 2025

Configure Dedicated Exchange Server Application

Currently our product ranning exchange 2019 CU15 with Exchange hybrid, so what else need configure other task for configuration of the dedicated application for Exchange Server. HCW8126 - Admin cons...
Exchange Server
hybrid
Zohaib_Yousuf's avatar
Zohaib_Yousuf
MCT
Nov 30, 2025

Hi,

If HCW detects an existing dedicated Exchange Hybrid application, it displays the application's name and ID. The dialog also shows the current administrator consent status for the full_access_as_app EWS API permission. If consent has already been granted (checkbox is selected) and you deselect it, the consent will be revoked - potentially breaking your existing configuration and impacting hybrid features such as Free/Busy, MailTips, and profile photo sharing.

Once configured, the Hybrid Configuration Wizard doesn't automatically enable the feature for your on-premises Exchange Server organization. HCW only creates the application in Microsoft Entra ID and prepares the Exchange Server configuration. To enable the feature, run the New-SettingOverride cmdlet. Before doing so, ensure all Exchange servers are running a version that supports this feature. Run the following command from an elevated Exchange Management Shell (EMS):

 

New-SettingOverride -Name "EnableExchangeHybrid3PAppFeature" -Component "Global" -Section "ExchangeOnpremAsThirdPartyAppId" -Parameters @("Enabled=true") -Reason "Enable dedicated Exchange hybrid app feature"

Get-ExchangeDiagnosticInfo -Process Microsoft.Exchange.Directory.TopologyService -Component VariantConfiguration -Argument Refresh

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