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Network utilization of all my processes seems to be frozen at 0 Mbps. See the screenshot below (Task Manager, Processes tab):


However, the Performance tab shows that I'm using my network as much as is possible:


The same happens when I switch to percentage. What's the problem and how can I fix it?

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Just last night I noticed this too! It has worked before. I thought maybe a recent change to my system would have done it, I'd installed Client Hyper V and SeriousBit Net Balancer the day before. – Mar 9 '13 at 0:36
Try viewing Network Utilization column in descending order to see processes using more bandwidth. Also check user tab, if there are any other users using network. – user568109 Mar 9 '13 at 7:35

Click on"Abrir Monitor de Recursos" (Resource Monitor) and look here in the network tab if you can see which tool causes the network IO:

enter image description here

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