Author Topic: Internet connection not working after Avast! Boot-Time Scan  (Read 5893 times)

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Offline ejrmelendez

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Internet connection not working after Avast! Boot-Time Scan
« on: December 07, 2012, 01:03:54 AM »
Basically, this is what happened with minimal scrutinous details:

Avast! detected malware threat and offered to "lock in Chest."
After this happened, I was prompted to restart my system and
perform a Boot-Time scan prior to rebooting it. I obliged,
and let the Boot-Time scan run. After returning, my internet connect
was disabled, as well as my Internet protection shields.
Also, internet in the rest of my house works, and my computer is bug free.
I've called my ISP, so it's not the connection error either.

Is this a common
problem, and how do I diagnose and fix it?

TL;DR: Internet worked fine. After malware threat, boot-time scan was performed.
Boot-time scan disabled internet connection. How do I fix it?

Offline DavidR

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Re: Internet connection not working after Avast! Boot-Time Scan
« Reply #1 on: December 07, 2012, 01:11:50 AM »
What was the file name and location ?
Have you looked in the avast virus chest (avastUI > Maintenance > Virus Chest, this should give the file name and original location ?
WinXP ProSP3/ Core2Duo E8300/ 4GB Ram/ avast! free 18.5.2342/ Firefox ESR, uBlock Origin, uMatrix/ MailWasher Pro7.11.0/ DropMyRights/ WinPatrol+/ Drive Image 7.1/ SnagIt 10.0/ avast! mobile security
Windows 10 Home 1909 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 20.6.2420 (build 20.6.5495.561) UI-1.0.544/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro

Offline chris..

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Re: Internet connection not working after Avast! Boot-Time Scan
« Reply #2 on: December 07, 2012, 01:20:34 AM »
exactly what happened to me today.
Maybe your bootscan has deleted tcpip.sys file (if patched tcpip with wxp).
I resolve with tool I took in the topic:
http://forum.avast.com/index.php?topic=110804.15

Offline DavidR

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Re: Internet connection not working after Avast! Boot-Time Scan
« Reply #3 on: December 07, 2012, 02:44:27 AM »
Which is why I asked what the file was and its location, if it was tcpip.sys and it is in the chest then it can be resolved, by restoration and exclusion.
WinXP ProSP3/ Core2Duo E8300/ 4GB Ram/ avast! free 18.5.2342/ Firefox ESR, uBlock Origin, uMatrix/ MailWasher Pro7.11.0/ DropMyRights/ WinPatrol+/ Drive Image 7.1/ SnagIt 10.0/ avast! mobile security
Windows 10 Home 1909 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 20.6.2420 (build 20.6.5495.561) UI-1.0.544/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro

Offline igor

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Re: Internet connection not working after Avast! Boot-Time Scan
« Reply #4 on: December 09, 2012, 01:39:38 AM »
I don't think it's connected - the boot-time scanner wouldn't delete the tcpip.sys file (just like an ordinary scan wouldn't, only the anti-rootkit scan did).