The content filter database download can fail because of the following reasons:
Since content filter database downloads can fail for many reasons - from simple network issues to vendor-specific consistency check failures - Blue Coat provides a detailed diagnostic log instead of sending content filter database failures to the event log. To access this specific diagnostic log, please do the following:
From the command line interface (CLI), use the CLI command SGOS#(config) show content-filter status
From the Management Console go to Statistics > Advanced > Content Filtering > Show content filter status
The Download log includes a step-by-step indication of what may have gone wrong. If you actually forced an immediate download in the GUI, this log is what the "results" button shows you.
Enter configuration commands, one per line. End with CTRL-Z.
SGOS#(config forwarding)download-via-forwarding enable
For further troubleshooting, obtain a packet capture of the download attempt. Packet captures can be obtained as follows: