Troubleshooting
If a packet doesn't appear in the Wireshark main window, perform the following actions:
Check the right network interface; make sure there is live traffic
Try turning off/on promiscuous mode
If no interface appears on which captures can be performed, do the following:
Check if Wireshark has sufficient rights to use a network card to capture data
Verify capture privileges from http://wiki.wireshark.org/CaptureSetup/CapturePrivileges
Note
You can also use the Wireshark community at https://ask.wireshark.org/ if queries aren't resolved.