Why has "auto refresh web data" stopped working

I have A web page feeding into excel and have set excel to refresh the data every 1 min but it is not doing it ,,,

If I press the "refresh All" button on the top tool bar it starts to refresh I see the green globe near the start button but that's all, the data does not refresh ,,, however if i go into "workbook connections" and use the refresh button there then the data updates fine but still no auto update

what can cause this ??

cheers

after pressing "refresh all" inside "workbook connections" the window need's to be closed before refresh completes ,,,