I have similar issue on DX80 and SparkBoard that is registered to Spark. We use PA firewall as well.
If we disconnect the call while the content is shared, and rejoin, then content shows up.
Has anyone found if the problem is Firewall related?
I know this is an old post, but we run into several weird problems between Cisco Spark/DX80/WebEx behind Palo Alto firewall.
Question:
"Increasing the TCP/UDP timeout timer to 3600 seconds (1 hour) from 15 minutes fixed the problem."
TCP default ti...
