Problems with network connection

I’m sorry if I’m posting about an already discussed/resolved issue but I couldn’t find any answers on the forum.

I have Comodo installed on a laptop which is connected to a central server via a LAN connection.

When the laptop goes into standby mode and I recall it from that state by pressing the power button, the connection is established for a few seconds and then the connection is broken and the ‘There is a problem with your connection’ icon appears on the taskbar. I can only restablish the connection by rebooting the laptop - anyone knows how I can resolve this annoying problem?