A replication process on a target server has been inactive for a significant amount of time. It is possible that there is a connection problem with the source replication server, or the source replication process is no longer running, or the source replication server is down.
Server operation continues.
Verify that the source replication server is still running. If the server is running, check that the source replication process is still active. If the source replication process is no longer active you can cancel this process.