“Fatal error during installation” error when uninstalling MacpWebComponents.msp in Skype for Business Server 2019

Applies to: Skype for Business Server 2019

Symptoms


When you try to uninstall the MACP component after you run the Stop-CsWindowsService cmdlet in Microsoft Skype for Business Server 2019, the component can’t be uninstalled. Additionally, you receive the following error message:
Fatal error during installation.

Cause


This issue occurs if you don’t install the Skype Server Update Installer (SSUI) before you run Bootstrapper.exe to install the required components for Skype for Business Server 2019.

Resolution


To resolve this issue, start SSUI to get the latest fix, and then uninstall the MACP component.

Note
This failed installation issue will recur if you double-click MacpWebcomponent.msp to install MACP together with the latest version after you run Bootstrapper.exe. To work around this issue, you should open the SSUI to get the latest fix, and then uninstall the MACP component.