This article applies to:

• SWG 9.x
• SWG 10.x

Symptoms:

• Cannot POST a file bigger than 100MB
• The error given is "Container Violation: Expanded file size limit exceeded"

Causes:

• There is a hard-coded limit to uploads of files that match specific MIME types, or are larger than 100MB

Resolution:

The workaround is to bypass scanning on uploads to one or more specified sites:

1. Under Policies > Condition Settings > URL Lists, add a new List (such as "Bypassed Upload Scanning List")
2. In this list, add the domains that you want to allow for large uploads (such as "*.example.com/").
3. Save the List. 
4. Under Policies > Security > Advanced Security policy, add a new Rule (such as "Bypass large uploads to example.com")
   • Set Action to Allow
   • Set Advanced Action to Bypass Scanning
   • Add a new Condition with Condition Name "URL Lists", "Any of..." selected, and select your new "Bypassed Upload Scanning List".
   • Add a new Condition with Condition Name "Direction", "Any of..." selected, and select "Outgoing". 
5. Save the Rule. 
6. For ease of reading, move the Rule near any other Allow Rules you may have.
7. Commit the changes, and test.

Notes:

This limitation is currently planned for review in SWG version 11.