Npcap will not upgrade (manually or via agent)
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Npcap will sometimes not uninstall correctly if a process is currently using the Npcap libraries. To check for this run the following command:
PS C:\Program Files\Npcap> .\NPFInstall.exe -check_dll WindowsSensor.exe, Wireshark.exe, dumpcap.exe
If you see processes listed, they must be stopped before the Npcap upgrade can continue. If no processes are using Npcap the above command will simply show <NULL>