Below are the system requirements for installing the SharePoint Server Connector in your environment. Note that the requirements are specifically for the server that will have the Connector installed. Please verify that the server in question meets these requirements.
Additionally, all other SharePoint servers in your environment’s SharePoint Server Farm must have .NET 4.5 or greater for the Connector to run successfully.
SharePoint Server 2013 + .NET 4.8
SharePoint Server 2016 + .NET 4.8
SharePoint Server 2019 + .NET 4.8
100 MB Disk Space for Software
SQL Server 2016 or greater