I was checking some of the logs of my Windows Server 2012 Essentials server last night and discovered that recently my Windows Azure Backup logs were reporting errors for the backups.
The errors weren’t serious but it was flagging that several files couldn’t be backed-up to the service. A normal person could accept this, but me having a little bit of offensiveness about things like that I needed to resolve it.
It transpires that the issue is temporary files generated by Facebook games and Flash video files in the roaming user profile. To resolve the warnings, modify the backup schedule on the server to the Exclusion Settings. Under Exclusion Settings in the Backup Wizard, define *.tmp *.swf and *.sol as exclusions for the root directory of your roaming profile share and set the Subfolders option to yes.
Tonight’s Windows Azure Backup completed without warnings.