Any Robocopy gurus out there who might be able to advise me why the following copy job is failing. Its set up to run every hour, every day. It backs up all files in a share by mirroring the share to a different server (job is being put in place temporarily whilst I stick another shelf in our NetApp SAN). However, it fails, complaining that it can't locate the initial resource. I've checked share permissions - they're fine. (code sanitised to remove private references, but UNC paths are both correct) - and I've also tried it by referencing the default admin share of the drive the files are on instead of by a UNC path - nada Here's the code: Code: SETLOCAL SET _source=\\LIVESERVER\c$\Share SET _destination=\\BACKUPSERVER\c$\BackupShare SET _what=/COPYALL /B /SEC /MIR SET _options=/R:2 /W:15 /LOG:BackupJobLog.txt /NDL /NFL /NS /V ROBOCOPY %_source% %_destination% %_what% %_options% Any ideas? I've run the job perfectly well on test boxes on my network at home - it happily chunks 2gb worth of my music across my LAN every hour without problems.