Cannot upload a file or access Administration, Firefox version doesn't support Silverlight

Potential Symptoms

  • Cannot access network awareness or upload a file in Visiconn.
  • Unable to switch accounts, getting message to download Silverlight.
  • Getting a message to update Silverlight:


  • Product Family:  Software
  • Product:
  • Component:  Firefox revision later than 52
  • Control System:  Visiconn



  1. Download and install Firefox 52esr.
    • 52.9.0esr can be found at:
    • You may also have to remove your current pinned button or shortcut, and re-add it, as that button will not be using the updated version.
  2. Turn off Firefox updates.
    1. Click the Open Menu button (appears as 3 stacked horizontal lines).
    2. Click Options.
    3. Click Advanced.
    4. Click the Update tab.
    5. Click the option for "Never check for updates".

Work Around

  • Use Internet Explorer.

KB ID: DD3588512

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