Advanced Threat Protection does not accept Insight queries on port 8443 as stated in the Administration Guide
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Article ID: 164241
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Updated On:
Products
Symantec Products
Issue/Introduction
ATP version 2.2 did not accept Insight queries over HTTPS port 8443.
Resolution
This has been resolved in ATP version 2.3. After upgrading, you can enable HTTPS Insight queries over port 8443 as specified in the Administration Guide.