Hi Vivek,
- Does the OPC Tag status change if you restart the agent Instance?
- Are there any errors in the Kepware Logs?
- Are there any errors in the PCo Logs?
- Have you patched PCo to the latest SP and Patch, your version is very old.
Note that QuickClient uses OPC DA connectivity to Kepware but you are using OPC UA between PCo and Kepware, according to the previous messages. BAD tag status could still be a connection issue between PCo and Kepware over UA.
Regards, Steve