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"Another user has a console session open to this virtual machine" or black screen using the web console

  • 1.  "Another user has a console session open to this virtual machine" or black screen using the web console

    Posted 21 days ago

    When I need to use the web console from ESXi (version 8.0.2 build-23825572 and 7.0.3 build-23794027) I periodically got either the yellow ribbon

    "Another user has a console session open to this virtual machine"

    or/and a complete "black screen" with a play logo on it (like when the VM is turned off).

    I can only see on the web console the following errors:

    Uncaught DOMException: Failed to execute 'send' on 'WebSocket': Still in CONNECTING state.
        at WMKS.VNCDecoder._sendBytes (https://esxi.local/ui/scripts/main.js:92646:27469)
        at WMKS.VNCDecoder._sendString (https://esxi.local/ui/scripts/main.js:92646:27259)
        at WMKS.VNCDecoder._handleProtocolVersionMsg (https://esxi.local/ui/scripts/main.js:92647:19117)
        at WMKS.VNCDecoder._processMessages (https://esxi.local/ui/scripts/main.js:92647:26232)
        at WebSocket.wsMessage (https://esxi.local/ui/scripts/main.js:92647:30995)
        
    VMConsole https://esxi.local/ui/scripts/main.js:53232:27 console closed