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Npcap cannot install in WinPcap-compatible mode when Win10pcap is installed #405

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@dmiller-nmap

Win10pcap installs wpcap.dll and Packet.dll but does not use the npf.sys driver name that WinPcap used. Based on DLLs, Npcap's installer thinks that WinPcap is installed, but since it is not, it cannot be uninstalled. We should detect Win10Pcap and refuse to install in WinPcap-compatible mode, notifying the user that it must be uninstalled first. We should be able to install in normal Npcap-API mode without issues.

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  1. dmiller-nmap commented on Oct 13, 2017

    @dmiller-nmap
    ContributorAuthor

    Intended fix: Detect Win10pcap by executable file version of Packet.dll, and disable WinPcap-compatible mode in the installer if it is present. Notify the user so they can manually uninstall it if necessary.

  2. dmiller-nmap commented on Oct 22, 2017

    @dmiller-nmap
    ContributorAuthor

    This fix is in place in Npcap 0.95.

  3. transferred this issue fromnmap/nmapon May 5, 2021
  4. shrddr commented on Dec 27, 2024

    @shrddr

    the warning about this in the installer is incomplete or cut off for some reason
    image

  5. reopened this on Dec 27, 2024
  6. fyodor commented on Dec 27, 2024

    @fyodor
    Member

    Thanks for the note, @shrddr. Re-opening.

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