PDF files blocked due to "Container violation : Invalid format"


This article applies to:

  • SWG 10.1.2

Symptoms:

Some PDF files are being blocked with the following error: Container violation: Invalid format

Causes:

The PDF file is being blocked by the Rule "Block Illegitimate Archives (Including Password-Protected Archives)"

Resolution:

Add a "True Content Type" Condition to the "Block Illegitimate Archives (Including Password-Protected Archives)" Rule, negate it by selecting the "Everything except for the items selected below" Applies To radio button, select "PDF File" as file type, and then Commit the change.

Last Modified 2/27/2012.
https://support.trustwave.com/kb/KnowledgebaseArticle14470.aspx