Qualys insights

Java-based Qualys connectors fail with 'trustAnchors parameter must be non-empty' error when the trustStore for SSL connections is missing, inaccessible due to permissions, or empty, breaking integration connectivity.

Assets synced from ServiceNow to Qualys, then scanned and synced back, create duplicate entries in cmdb_ci_computer when discovered hostnames differ from originally provided names or when only IP addresses were provided without names.

Qualys sensor returns HTTP 204 (No Content) or 200 with incomplete data where image metadata exists but vulnerability data is missing, requiring polling until complete dataset arrives.

Download processors fail or timeout when processing large batches of sync queue records, requiring manual batch size reduction. This indicates resource exhaustion during bulk data ingestion.

Qualys API connections fail with unauthorized errors despite correct credentials, requiring multiple retry attempts before validation succeeds. This intermittent authentication failure pattern indicates API server load or network issues.