Wireshark-users: [Wireshark-users] Re: Capturing issue: "The capture session could not be initiat

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From: johan de clercq <johan@xxxxxxxxxx>
Date: Sun, 28 Jun 2026 11:59:06 +0200

Did  you put your interface in promiscuous mode ? 

On 6/28/26 11:56, Jaap Keuter via Wireshark-users wrote:
Hi,

Since this issue seems contained to Npcap, there’s little Wireshark can do here. The Npcap project is the more suitable place to raise this issue.

Regards,
Jaap


On 27 Jun 2026, at 18:56, Haktan Kıraç <kirachaktan773@xxxxxxxxx> wrote:

Hi everyone,

I am experiencing an issue when trying to start a capture in Wireshark on Windows. Every time I attempt to start a session, I get the following error message:

"The capture session could not be initiated on capture device '\Device\NPF_{...}'. (Generic error)"

I have already tried the following troubleshooting steps:

  • Reinstalled Npcap with "WinPcap API-compatible mode" enabled.

  • Ran Wireshark with Administrator privileges.

  • Reset my network adapters using netsh commands.

Despite these efforts, the issue persists. Has anyone encountered this specific "Generic error" with the latest Npcap version on Windows, or is there any known incompatibility I should check?

Any help would be greatly appreciated.

Best regards, Haktan


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