After a power outage or other form of inappropriate termination of the program, PigVision may freeze when you click "Update".
Restart the PC, then open VIGO:
Right-click on PigVision on the desktop and select "Show more options" – "Properties" – "Shortcut" and click "Advanced".
Check "Run as administrator". Click "OK" and close the window.
Once PigVision is opened, click "Update" and "OK" after communication
Then it's running again.