Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

This is probably an issue with WinPcap or Npcap; they both plug into the Windows networking stack, and Symantec Endpoint Protection may also plug into the networking stack in a fashion that interferes with WinPcap or Npcap.

Go to Help > About Wireshark, and see whether it says, in the "Running in" section (not the "Compiled in") section, "with Npcap version {version}" or "with WinPcap 4.1.3". If it mentions WinPcap, it's a WinPcap problem; unfortunately, WInPcap is no longer supported, and won't be fixed. If it mentions Npcap, however, please file an issue report at the Npcap issue list.