SPS 2019 Workflow Manager Installation failing both online and offline mode

SharePoint Server Management
SharePoint Server Management
SharePoint Server: A family of Microsoft on-premises document management and storage systems.Management: The act or process of organizing, handling, directing or controlling something.
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  1. ChelseaWu-MSFT 6,316 Reputation points

    Would you please confirm: What is the Operating System you are currently using for the installation?
    I have tested in my SharePoint Server 2019 farm and the components are installed successfully, so there should be nothing wrong on the server side.
    According to the error logs, it is the “.NET 3.5 for Windows 8” that fails to install during this process.

    Please check if you have enabled “.NET Framework 3.5” via Server Manager (for Windows Server) > Features > .NET Framework 3.5 (includes .NET 2.0 and 3.0).
    Make sure the features are properly installed and then reboot your machine. After that, try to install Workflow Manager 1.0 Refresh (CU2) again.


    You can refer to the document here for how to enable “.NET Framework 3.5” on other OS: How to enable the .NET Framework 3.5 by using Control Panel in Windows 10 and Windows Server 2016.

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  2. ChelseaWu-MSFT 6,316 Reputation points

    @Anonymous Here is a post with similar issue for your reference: Error with configuring workflow manager.

    Referring to which, you can:

    1. Check the user account you are using for the configuration. Make sure you use a proper admin account in a valid format instead of using email address, for example, Domain\Admin.
    2. Uninstall the Workflow Manager CUs if necessary, then run the configuration again.

    Another two references in case you need them: Workflow Manager 2013 Configuration error. / ERROR MESSAGE INSTALLING WORKFLOW MANAGER AND SERVICE BUS.

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