The process cannot access the file because it is being used by another process.(Exception from HRESULT: 0x80070020)

In IIS7.5  I was trying to start my default Web Site and am getting  the  following Error Screen.

I realized that I want to see which process is using this portNo .

Lets take a look at the netstart  and see what might be causing problem.

Open Command Prompt (Windows Key + R  and Enter cmd) and enter Command.

Then I tried to which process is using this Process ID 4 accessing port No 80.

Using the tasklist command we can see the all processes running under Windows. You can Filter by enter the command /fi “PID  eq 4”. Means we are Searching Process ID  equals to 4.

The process with Process ID 4 is Skype. Then Closed the Skype and restart the IIS now it is working fine Now.

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