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"The request failed with HTTP status 417: Expectation failed" appears in InterScan Web Security Virtual Appliance (IWSVA)

    • Updated:
    • 5 Nov 2014
    • Product/Version:
    • InterScan Web Security Virtual Appliance 6.0
    • InterScan Web Security Virtual Appliance 6.5
    • Platform:
    • N/A N/A
Summary
When you access a webpage, you receive the following message:
The request failed with HTTP status 417: Expectation failed.
This error appears when Squid is enabled as a web proxy. More precisely when accessing webpages not 100% HTTP 1.0 compliant.
Details
Public
To resolve the issue, configure Squid to ignore 100 Expected headers.
  1. Log in to the IWSVA console with root privileges.
  2. Edit the /etc/squid/squid.conf file using vi editor.
  3. Add the “ignore_expect_100 on” line at the end of the squid.conf file.
  4. Save the changes.
  5. Reload the Squid configuration using the “/etc/init.d/squid reload” command.
Premium
Internal
Rating:
Category:
Configure; Troubleshoot
Solution Id:
1104098
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