RE: no connection when using Lotus Connector for Sap Solutions 2.0.1 on an IBM Lotus Notes 8.5X client under Microsoft Windows 7 Daniel W Heichel 24.Apr.14 09:48 PM Lotus Notes Connector for SAP Solutions LC LSX - All ReleasesWindows
You always want to match the application. The Operating System bitness determines whether 64-bit is an option, but that's it. For an application to talk to a driver or any other software, they must be of the same bitness, so in this case you'd want to install the 32-bit SAP Connector to match Notes.