Hello,
I have Spark setup and working - I am tweaking the Windows Firewall and the behavious is odd.
1. If I block all outbound connections then Spark is obviously blocked
2. If I allow any program to communicate on TCP 443, 33434 then Spark can connect and communicate

3. If I then restrict this rule by executable (we don't want to allow any program to communicate outbound on 443 & 33434) to path '%USERPROFILE%\AppData\Local\Cisco\Cisco Spark\Spark.exe' then Spark doesnt work...

I checked to see what executable was making the outbound connection using 'netstat -b' and looking in task manager and it is the correct path.
So: what executable is actually doing the outbound communication?
Kind Regards
Matthew