Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

On Windows, is there an easy way to determine which process is currently accessing the network? The wifi icon is always lit(telling me it is transferring sth.), I am curious what process is causing this.

share|improve this question

migrated from Sep 12 '10 at 7:16

This question came from our site for professional and enthusiast programmers.

shouldn't this question be asked on SuperUser ! – Manaf Abo.Rous Sep 12 '10 at 6:43
@Echo Lu - I agree with Manaf, throw a block of code in your question so it doesn't get close. Knowing how to find this information is useful to windows programmers in some cases. – JMC Sep 12 '10 at 6:55

There's a number of ways how to do that.

One is you use WireShark, another is tcpview (quick link:

WireShark gives you more info, but is not as easy to use as tcpview.

share|improve this answer

A packet sniffer like wireshark is useful if you want to see exactly what is going on, but if you just want to see what process is using data then netlimiter ( is very useful. The free monitor version should work fine.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.