[networking] Why doesn't wireshark detect my interface?

I just installed Wireshark, but when I click capture > interfaces, the dialog box appears, but it does not contain my network interface.

When click on capture > interfaces it appears as in the screenshot below. What can cause this?

For *nix OSes, run wireshark with sudo privileges. You need to be superuser in order to be able to view interfaces. Just like running tcpdump -D vs sudo tcpdump -D, the first one won't show any of the interfaces, won't compalain/prompt for sudo privileges either.

So, from terminal, run:

$ sudo wireshark

In Windows, with Wireshark 2.0.4, running as Administrator did not solve this for me. What did was restarting the NetGroup Packet Filter Driver (npf) service:

1. Open a Command Prompt with administrative privileges.
2. Execute the command sc query npf and verify if the service is running.
3. Execute the command sc stop npf followed by the command sc start npf.
4. Open WireShark and press F5.

Source: http://dynamic-datacenter.be/?p=1279

On Fedora 29 with Wireshark 3.0.0 only adding a user to the wireshark group is required:

sudo usermod -a -G wireshark $USER

Then log out and log back in (or reboot), and Wireshark should work correctly.

By Restarting NPF, I can see the interfaces with wireshark 1.6.5

Open a Command Prompt with administrative privileges.

1. Execute the command "sc stop npf".
2. Then start npf by command "sc start npf".
3. Open WireShark.

That's it.

As described in other answer, it's usually caused by incorrectly setting up permissions related to running Wireshark correctly.

Windows machines:

Run Wireshark as administrator.

I hit the same problem on my laptop(win 10) with Wireshark(version 3.2.0), and I tried all the above solutions but unfortunately don't help.

So,

I uninstall the Wireshark bluntly and reinstall it.

After that, this problem solved.

Putting the solution here, and wish it may help someone......

Just uninstall NPCAP and install wpcap. This will fix the issue.