I’ve got 6 clients on my network.  5 of them work fine.

I just noticed that one is failing and when I kick it off manually it fails at 1%.

Client event log shows:

Backup of volume S: to SERVER did not succeed.
Reason: Microsoft.WindowsServerSolutions.DataProtection.PCBackup.Protocol.
ProtocolException: ConnectionLost, Details: Reconnect attempt rejected by server
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.Protocol.
ReconnectableStream.TryReconnect(Int32 localGeneration)
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.Protocol.
ReconnectableStream.WriteWithReconnect(Int32 count)
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.Protocol.
ReconnectableStream.Write(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.Protocol.
BackupProtocol.SendClusterHash(Int64 clusterIndex, Byte[] hash)
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupOp.
BackupOperation.DoClusterPass1()
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupOp.
BackupOperation.RunWithoutCatch()
at Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupOp.
BackupOperation.Run()

as the first error.  Not sure if that’s the actual cause or a symptom.  Can anyone help point me at a solution, or other places to look for clues?

I’ve already tried uninstalling client connector software/rebooting/re-adding (that didn’t help).  I tried doing a backup cleanup on the server – it completed without finding any problems.  (that didn’t help)

I think(?) all of the appropriate services are running on the client (or, at least I would hope so after the reinstall of the connector anyway).

Thanks in advance!

-Kevin