SAP GUI 770 - WSAECONNRESET Timeout every 5 minutes

Question

I'm recently installed a new instance of SAP GUI 770 on my server, but for some reason im getting error 10054 (WSAECONNRESET: Connection reset by peer). Symptom: Timeout on SAP GUI every 5 minutes without do anything on client. Things that i've already do:

• Increase/decrease of parameters -> rdisp/keepalive_timeout = 3600 and rdisp/keepalive = 20
• Put "true" on that -> enque/encni/set_so_keepalive
• Set autologout to 0 -> rdisp/gui_auto_logout = 0
• Disable Windows Firewall
• Open port 3299 on my permiter firewall (corporate)

Best regards, Will