We too are experiencing errors on some of our machines. We have four computers that I have investigated and verified a problem with the update (but more are showing up with alerts) and trying to roll back a version is not working anymore either. We are unable to download from Sophos.
2018-01-31T13:53:15.262Z [ 2512] ERROR SUL-Log [E35582] [DetailedException: File copy failed. [File: '51d17f4d17dfb0cefaaf6aa236d011a6x000.dat' ] [From: 'adapter|{adapter|{adapter|{http|http://d1.sophosupd.com/update/|}|}|}|' ] [To: 'file|C:/ProgramData/Sophos/AutoUpdate/data/warehouse|' ] ]
2018-01-31T13:53:15.278Z [ 2512] ERROR SDDSDownloader::ReportSyncFailure Failed to synchronise
I am not sure if this is a separate issue. If it is determined to be a different problem, I can start a new thread.
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