Honeywell Gx Remote Control App Connection Issue (2025)

[Bas__2_NL]

Hi,
I tried to setup the GX remote app, but i get the error LOST CONNECTIVITY WITH PANEL. 
The app is establishing secure connection and then connected and after some seconds i get LOST CONNECTIVITY WITH PANEL
System Galaxy dimension 520 v3.07 Ethernet Iris 4 620 last firmware 4.25.0.6755 

 

56.03.1 access period= ANY time, 56.03.2 mode:  Direct access

 

System is pingable 
Remote service suite is working
The user codes are working on the panel
Who has a suggestion?
 

[james.wilson]

Don't use it but cloud or port forward? 

[Bas__2_NL]

At this moment only a local connect 192.168.. on the same vlan. 

[james.wilson]

Does it function direct or is it cloud only? 

[sanhaowangluo]

"That 'LOST CONNECTIVITY' error on Galaxy Dimension panels is often a timing issue between the Ethernet module (Iris) and the app's secure handshake. Have you checked if the encryption key in the panel matches the app exactly? Sometimes a slight firmware mismatch on the Iris 4 can also cause the session to drop after the initial connection.
 

In our testing at CIVINTEC, we’ve noticed that ensuring a stable static IP and checking the polling intervals can sometimes stabilize these remote sessions. If the hardware continues to be temperamental, it might be worth looking into readers or controllers that support more robust OSDP v2 protocols for a more reliable secure channel. Hope you get it sorted!"

[sanhaowangluo]

Hi Bas, I've seen similar issues with Galaxy Dimension panels before. Since it's pingable and the RSS (Remote Service Suite) is working, have you checked if the port forwarding for the Gx app (usually port 10001 or 5001 depending on your setup) is correctly configured on the router? Sometimes the app requires a more stable handshake than the RSS. Also, double-check if the 'Remote User' codes have the proper 'App Access' permissions enabled in the panel manager.