Good catch! I don't know about the computer shutting down, but I did notice that when I installed Npcap, it seems to change the sleep settings. Thing to note here is that it changes the sleep settings only if they are changed after Npcap is uninstalled. If we change the settings when Npcap is installed and don't touch it thereafter even after uninstalling, it doesn't seem to do anything.

Can either of you report exactly what the sleep settings were and whether they were changed? Or are the settings the same, but the behavior is different?

@lkytal was there a crash? Is there a .dmp file in C:\Windows\minidump\ that you could send to dmiller@nmap.com?

Steps to reproduce:

1. Set timer to 1 minute
2. Install Npcap
3. Wait for 1 minute (to test whether the computer sleeps)
4. Go to settings and find out that the sleep timer has changed to never.

@dmiller-nmap I've emailed dump file to you. By the way, the change of system sleep timer may not allway happend.

@lkytal Please try Npcap 0.83, released yesterday, which has this fix. Let us know if it solves your problem!

During the last day it works perfectly, thanks. @dmiller-nmap