Solved No internet after uninstalling Avast 8

Ednan

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Location
India
Hello,
I cannot connect to internet after uninstalling my Avast 8 (Exact version 8.0.1487). I even tried uninstalling it from their uninstallation tool in Windows 8 Safe Mode, still had the same problem. On troubleshooting, this is what I was shown
"Ethernet" doesn't have a valid IP configuration. I also tried flushing DNS, etc but with no luck. However when I reinstall Avast, internet starts working again. I've searched Avast forums and tried all their recommended ways to fix the problem.

I am using a DSL connection with internet cable which goes directly to the back of my CPU and I don't have any modem device in my house.

ethernet.jpg

How do I completely remove Avast 8 and get my internet back?
 

My Computer

System One

  • OS
    Windows 8.1 Professional Update 1 x64, Arch Linux
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Compaq
    CPU
    AMD Athon 64 X2 5000+
    Motherboard
    PEGATRON CORPORATION NARRA5 3.02
    Memory
    4GB DDR2 800Mhz
    Graphics Card(s)
    NVIDIA Geforce 6150SE nForce 430
    Monitor(s) Displays
    1
    Screen Resolution
    1368x768
    Internet Speed
    ~750Kbps
When you look at your hardware list , does the Network Interface Card (NIC) have any errors showing? , sometimes uninstalling avast will remove the driver for the NIC.
 

My Computer

System One

  • OS
    Windows 8 Pro
    Computer type
    PC/Desktop
    Memory
    6 GB
    Screen Resolution
    1280 x 1024
    Hard Drives
    12 TB in 6 disks
    PSU
    TX650
    Keyboard
    G15
    Mouse
    Intellimouse 3.0
    Internet Speed
    100 Mbits
    Browser
    Chrome
    Antivirus
    Trend Micro
When you look at your hardware list , does the Network Interface Card (NIC) have any errors showing? , sometimes uninstalling avast will remove the driver for the NIC.

I had three yellow exclamation marks near all WAN drivers in my Device Manager

ethernet2.jpg

To solve it, I followed Henry Turong's method on this page windows 8 wan miniport issue - Microsoft Community

and now my windows 8 runs into BSOD after booting to desktop (probably when the network drivers load)..
I remember while uninstalling Avast, it took a system restore.
I booted into Ubuntu now but cannot access my windows NTFS drivers where the windows 8 iso file is stored (to make a bootable USB) as windows didn't close properly.

All in all, I ran into trouble.
 

My Computer

System One

  • OS
    Windows 8.1 Professional Update 1 x64, Arch Linux
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Compaq
    CPU
    AMD Athon 64 X2 5000+
    Motherboard
    PEGATRON CORPORATION NARRA5 3.02
    Memory
    4GB DDR2 800Mhz
    Graphics Card(s)
    NVIDIA Geforce 6150SE nForce 430
    Monitor(s) Displays
    1
    Screen Resolution
    1368x768
    Internet Speed
    ~750Kbps
I found out that I was getting BSOD whenever it tried to connect to the internet (which it automatically did with skype).
So I disabled skype at startup, bought the same WAN drivers back from "Device Manager", restarted, it again showed same yellow exclamation marks near all WAN drivers (as shown in above picture) and I couldn't connect to internet.
So I installed Avast 8 Internet Security again and my internet started working.
However all three WAN drivers disappeared from the list

ethernet3.jpg

The three WAN Drivers are back when I uninstall Avast. So does this mean I should try to uninstall them manually after uninstalling Avast? Would it be safe to do so? Please help.
 

My Computer

System One

  • OS
    Windows 8.1 Professional Update 1 x64, Arch Linux
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Compaq
    CPU
    AMD Athon 64 X2 5000+
    Motherboard
    PEGATRON CORPORATION NARRA5 3.02
    Memory
    4GB DDR2 800Mhz
    Graphics Card(s)
    NVIDIA Geforce 6150SE nForce 430
    Monitor(s) Displays
    1
    Screen Resolution
    1368x768
    Internet Speed
    ~750Kbps
Hello,

Just a guess but I think all those drivers look unique and some may serve a purpose that I am not personally familiar with; however, I believe that 8.0.1487 was a Beta release and it is not uncommon for betas to hose something up. Why don'y you take a stab at this method. OK, Avast has just released a new stable version (8.0.1497) that works on both Win 8 and 8.1; however, there is only a minor reporting glitch that remains. See my post here for details and download instructions. Don't give up on Avast yet. This might fix it for you. Good luck.

http://www.eightforums.com/system-security/31010-avast-8-0-1497-now-compatible-windows-8-1-a.html
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11
PDANet is a way of linking a phone to use as a data connection to your PC and VirtualBox adapter is used for Virtualbox software....do you actually use these on your PC?

Just trying to see why you have those listed in there.
 

My Computer

System One

  • OS
    Windows 8 Pro
    Computer type
    PC/Desktop
    Memory
    6 GB
    Screen Resolution
    1280 x 1024
    Hard Drives
    12 TB in 6 disks
    PSU
    TX650
    Keyboard
    G15
    Mouse
    Intellimouse 3.0
    Internet Speed
    100 Mbits
    Browser
    Chrome
    Antivirus
    Trend Micro
PDANet is a way of linking a phone to use as a data connection to your PC and VirtualBox adapter is used for Virtualbox software....do you actually use these on your PC?

Just trying to see why you have those listed in there.
Yes, I actually use them both. I used to reverse tether and that's the reason why I have PDANet (maybe also because of mobile drivers).


Hello,

Just a guess but I think all those drivers look unique and some may serve a purpose that I am not personally familiar with; however, I believe that 8.0.1487 was a Beta release and it is not uncommon for betas to hose something up. Why don'y you take a stab at this method. OK, Avast has just released a new stable version (8.0.1497) that works on both Win 8 and 8.1; however, there is only a minor reporting glitch that remains. See my post here for details and download instructions. Don't give up on Avast yet. This might fix it for you. Good luck.

http://www.eightforums.com/system-security/31010-avast-8-0-1497-now-compatible-windows-8-1-a.html

YOU SAVED ME!!
I downloaded the latest version of Avast from the link you provided then uninstalled it normally from the control panel and my internet now works without Avast :D
Thanks a lot.
(Was trying to find a solution since months)
 

My Computer

System One

  • OS
    Windows 8.1 Professional Update 1 x64, Arch Linux
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Compaq
    CPU
    AMD Athon 64 X2 5000+
    Motherboard
    PEGATRON CORPORATION NARRA5 3.02
    Memory
    4GB DDR2 800Mhz
    Graphics Card(s)
    NVIDIA Geforce 6150SE nForce 430
    Monitor(s) Displays
    1
    Screen Resolution
    1368x768
    Internet Speed
    ~750Kbps
Glad to here you got it working again.
 
Last edited:

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11
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