Hello. We installed SCCM 2012 a few years ago. In recent years, this has really only collected dust and been little used.

But now, it has been decided that we will set up new hardware with server 2022 where SCCM 2022 will be installed.

What we’ve done is uninstall the old instance so we can start with a clean one.
I see that the entries we had on our DCs – in “System/System management” disappeared after we removed roles and uninstalled SCCM2012.

I have followed a step by step guide to install new standalone instances on 2 sites.(https://www.youtube.com/watch?v=wCElfLBLyX0)
Everything apparently goes well with new users, SQL installation, rights etc., until MS Config Manager Setup Wiazard has to do a Prerequisite Check..

There are 2 things wrong here:

Microsoft Remote Differential Compression (RDC) library registered
Microsoft Remote Differential Compression (RDC) library must be registered for Configuration Manager site server installation. Details at https://go.microsoft.com/fwlink/?linkid=2186120.

Existing Configuration Manager server components on site server.
A site server or site system role is already installed on the computer selected for site server installation. Remove the site or site system role from the computer, or select another computer for site server installation.

I have tried uninstalling and reinstalling the “Remote Differential Compression” feature a few times but still get the same error despite having it installed.
I can understand that I get errors on the Exisiting configuration manager server, as we have had one installed. But a bit strange to get that message when it is uninstalled.

So I’m kind of stuck on these error messages… Does anyone know how I can move forward?

​Hello. We installed SCCM 2012 a few years ago. In recent years, this has really only collected dust and been little used.But now, it has been decided that we will set up new hardware with server 2022 where SCCM 2022 will be installed.What we’ve done is uninstall the old instance so we can start with a clean one.I see that the entries we had on our DCs – in “System/System management” disappeared after we removed roles and uninstalled SCCM2012.I have followed a step by step guide to install new standalone instances on 2 sites.(https://www.youtube.com/watch?v=wCElfLBLyX0)Everything apparently goes well with new users, SQL installation, rights etc., until MS Config Manager Setup Wiazard has to do a Prerequisite Check..There are 2 things wrong here:Microsoft Remote Differential Compression (RDC) library registeredMicrosoft Remote Differential Compression (RDC) library must be registered for Configuration Manager site server installation. Details at https://go.microsoft.com/fwlink/?linkid=2186120.Existing Configuration Manager server components on site server.A site server or site system role is already installed on the computer selected for site server installation. Remove the site or site system role from the computer, or select another computer for site server installation. I have tried uninstalling and reinstalling the “Remote Differential Compression” feature a few times but still get the same error despite having it installed.I can understand that I get errors on the Exisiting configuration manager server, as we have had one installed. But a bit strange to get that message when it is uninstalled. So I’m kind of stuck on these error messages… Does anyone know how I can move forward?  Read More

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