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Searching in: Trouble Reports
ID: TR05Q09277
Added on: 2019-05-08
Last update: 2019-05-23
Solved in: 6.7.6
Platform: All Platforms
Product: NoMachine Server
Severity: Serious
Status: Closed
Virtual desktops and custom sessions stay in a non-connectable state for several minutes

This issue occurs when trying to restore a disconnected virtual desktop or custom session. If a network problem occurs while the session is in the middle of the reconnection procedure, the procedure cannot be cancelled and the session enters in a  not-connectable status until timeout expires.

When the problem occurs, session log usually reports:

nxagentHandleDisconnectCommand: WARNING! Ignoring the command with session disconnected.


ProxyChannel/ProxyChannel: WARNING! No data received on FD...  since ...


As a possible workaround to prevent this issue, disable UDP:

- on the user's device, launch NoMachine.
- right mouse click on the connection file 
- select "Edit connection"
- press the advanced button
- and de-select "Use UDP communication for multimedia data"

Note: UDP must be disabled before the issue occurs.