Author Topic: DHCP host not found / DHCP NACK error  (Read 3782 times)

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Offline TheOwner

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DHCP host not found / DHCP NACK error
« on: May 11, 2018, 08:01:06 PM »
Avast Free (since version 18.2) causes DHCP nack error in windows event manager/router. Also my DHCP client list in router (TP-LINK WDR 4300 - latest firmware) is empty. Just only after PC start. DHCP server says "DHCPS:lease host name not found". After hour my pc trying asking for new ip, that cause  nack error (ip address not allowed), after that is ack (ip address allowed) and now my PC appear in DHCP list. From now is all ack every hour until i restart my pc.
My lease time i set to 2 hours, PC asking for new ip every hour and if is DHCP list empty, DHCP cannot allow this ip for my device again, that cause heavy lag if i play any online game.

I tried uninstall Avast which solved this problem, when I installed Avast again, problem was back. Disabling all shields has no effect on this.
(After Avast uninstall my DHCP name appeared in router, with Avast installed there is nothing.)

Please fix it.

Win 7 64 bit, Avast Free 18.4.2338 clean install