Customer noticed ICAP_error screen, with the message:
"File is password protected; File: foo.zip; Sub File: ; Vendor: Symantec...
There could be a network problem, the ICAP service may be misconfigured, or the ICAP server may have reported an error.
Tech support information: icap_error"
Password protected Excel files blocked (not limited to only Excel files)
Password protection makes it impossible to scan the file, and by default traffic is blocked when scanning is not possible.