The librfc32.dll and sapsecu.dll files must be installed on the machine where Connector for use with SAP ArchiveLink will be installed.
To install these files, copy the librfc32.dll from your SAP GUI installation and sapsecu.dll from your SAP Server installation. Paste both files in the ArchiveLink\bin directory (for example, C:\inetpub\wwwroot\ArchiveLink\bin).