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APPLIES TO: 
2016 
2019 Subscription Edition
Tip
Looking for the Exchange Server 2016 release notes? See Release notes for Exchange Server 2016.
Welcome to Microsoft Exchange Server 2019! This topic contains important information that you need to know to successfully deploy Exchange 2019. Please read this topic completely before beginning your deployment.
Known issues in Exchange Server 2019
When you attempt to uninstall Exchange Server from Windows 2019 Server Core using the Exchange Setup Wizard, the operation will fail. The wizard attempts to launch the Windows Control Panel to uninstall Exchange, but the Control Panel does not exist in Windows Server Core. To uninstall Exchange from Windows Server Core, run the following Setup command from the command line:
Note
The previous /IAcceptExchangeServerLicenseTerms switch will not work starting with the September 2021 Cumulative Updates (CUs). You now must use either /IAcceptExchangeServerLicenseTerms_DiagnosticDataON or /IAcceptExchangeServerLicenseTerms_DiagnosticDataOFF for unattended and scripted installs.
The examples below use the /IAcceptExchangeServerLicenseTerms_DiagnosticDataON switch. It's up to you to change the switch to /IAcceptExchangeServerLicenseTerms_DiagnosticDataOFF.
Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /mode:Uninstall
This issue will be resolved in a future CU update for Exchange Server 2019.