Was it the same with a previous version of NetXMS, or you did not use it before?
This may happen, if your computer is switching from network to network, e.g. from ethernet to wifi. Also try pinging netxms server from your desktop to check that there are no connectivity issues.
There are thought to improve the protocol between management console and the server, one day this should be done, but not very soon.
Also, you can deploy web interface on the server. Communication with the web interface might work better in non-stable network.
This may happen, if your computer is switching from network to network, e.g. from ethernet to wifi. Also try pinging netxms server from your desktop to check that there are no connectivity issues.
There are thought to improve the protocol between management console and the server, one day this should be done, but not very soon.
Also, you can deploy web interface on the server. Communication with the web interface might work better in non-stable network.