Also looking for a solution to this. OPC Server from RSLinx properly connected, can browse through the OPC Tag folders in "OPC Quick Client" but all tags show a "Bad_NotConnected" quality. Read returns null and writes are not successful.
EDIT: Arrived at a solution! Uncheck the box for OPC Config setting "Use Async Operations" After this all tags values read/write successfully.
@elliot.lohr In case you never resolved this yourself
Studio V32, Emulate V32, RSLinx Classic, Ignition 8.1.3, All running on same windows VM.