Author Topic: Avast Firewall started blocking DHCP request from my laptop  (Read 1380 times)

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Offline Brad125

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Avast Firewall started blocking DHCP request from my laptop
« on: April 15, 2019, 10:44:28 PM »
Recently I started to have issues with my laptop connecting to a network (wired & wireless).  It would be connected but I was not getting an IP address from the DHCP server on the network (router at home & Window at client site).  I found that if I disable the Avast firewall for a period of time I can then get an IP.

Anyone else experiences this same issue recently?  Even after the last AV software update it still blocks DHCP.

Offline bob3160

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Re: Avast Firewall started blocking DHCP request from my laptop
« Reply #1 on: April 15, 2019, 11:02:38 PM »
Is the Avast firewall set to private? (Home and Office)
Default setting is public.
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Offline Brad125

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Re: Avast Firewall started blocking DHCP request from my laptop
« Reply #2 on: May 01, 2019, 03:56:50 AM »
It seems to be happening no matter if the network is set to Private or Public.  I don't see anything blocked in the logs but DHCP fails every time the lease expires.

Offline Asyn

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Re: Avast Firewall started blocking DHCP request from my laptop
« Reply #3 on: May 01, 2019, 07:32:55 AM »
Repair Avast:
1. Avast GUI -> Settings -> Troubleshooting
2. Click on 'REPAIR APP'.
3. Follow instructions.
4. Reboot.
Win 8.1 [x64] - Avast PremSec 21.9.6605.IBC [UI.666] - EEK - Firefox ESR 78.14 [NS/uBO/PB] - TB 91.1.1
Avast-Tools: Secure Browser 93.0 - Cleanup 21.3 - SecureLine 5.13 - Driver Updater 21.3 - CCleaner 5.85
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