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Network apps stop working after installing AVAST in windows 8 CP

Aneek

New Member
Hello friends,
I have installed windows 8 consumer version.I have cleanly installed avast internet security 7(windows 8 compatible). But after installing it,avast cannot update(it says it cannot connect to server). Also network apps like Mozilla,chrome,even internet explorer cannot find any page.(as if no internet connection is there;although I have connected to internet).

i have disabled windows defender and windows firewall though.But nothing works.
Strange thing is that after uninstalling avast all apps run normally as usual.
I have tried even Norton internet security(windows 8 compatible). The problem is exactly the same as that of avast.
I WILL BE THANKFUL FOR ANY HELP.
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

chev65

Closed
Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)
 

My Computer

System One

  • OS
    Windows 8.1 Pro WMC
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built
    CPU
    Q9650 @ 4.05 GHz
    Motherboard
    Gforce 780i SLI FTW
    Memory
    8GB Gskill DDR2 1200Mhz
    Graphics Card(s)
    GTX-480
    Sound Card
    Asus D2 Xonar
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    HannsG
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    9 fans air cooled
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    G15 logitech
    Mouse
    G9 logitech
    Internet Speed
    50mbps

GMan

Banned
Hello friends,
I have installed windows 8 consumer version.I have cleanly installed avast internet security 7(windows 8 compatible). But after installing it,avast cannot update(it says it cannot connect to server). Also network apps like Mozilla,chrome,even internet explorer cannot find any page.(as if no internet connection is there;although I have connected to internet).

i have disabled windows defender and windows firewall though.But nothing works.
Strange thing is that after uninstalling avast all apps run normally as usual.
I have tried even Norton internet security(windows 8 compatible). The problem is exactly the same as that of avast.
I WILL BE THANKFUL FOR ANY HELP.

No disrespect to Chev's advice at all because same as above here, he always has great tech solutions.

I can only give my own advice though and that is to use the removal tools for both Norton and Avast in safe mode. Reboot and set those services you mentioned to Auto and start them. Then (remember this is only advice) - forget that you ever even thought of 3rd party security and be happy.

You can then perhaps, reconsider when Windows 8 goes RTM but even then I would say not.
 

My Computer

System One

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    2 MByte/sec Down, 250 KByte/sec Up

Aneek

New Member
Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)

Thanks for posting.
I did as you told me.
After resetting in cmd I restarted.The network apps like mozilla,firefox worked great.But AVAST cannot update its virus definitions like before.
Also after again restarting the PC,all problems came up again.(Mozilla,chrome cannot find any pages and AVAST cannot connect to server.)
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Calico

New Member
Power User
Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)

Thanks for posting.
I did as you told me.
After resetting in cmd I restarted.The network apps like mozilla,firefox worked great.But AVAST cannot update its virus definitions like before.
Also after again restarting the PC,all problems came up again.(Mozilla,chrome cannot find any pages and AVAST cannot connect to server.)

Have you checked the Proxy settings for Avast - Settings/Updates/Proxy Settings
 

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

Aneek

New Member
Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)

Thanks for posting.
I did as you told me.
After resetting in cmd I restarted.The network apps like mozilla,firefox worked great.But AVAST cannot update its virus definitions like before.
Also after again restarting the PC,all problems came up again.(Mozilla,chrome cannot find any pages and AVAST cannot connect to server.)

Have you checked the Proxy settings for Avast - Settings/Updates/Proxy Settings

Hi Calico,
thanks for posting.
I have no clear idea about proxy settings.Can you please elaborate the fact?
Thanks for any help.
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Calico

New Member
Power User
The proxy settings I'm referring to are those defined in Control Panel/Internet Options/Connections/Settings. Avast can use the settings set here or can use it's own. In Avast/Settings/Updates/Proxy Settings the default is usually 'Auto detect' if that's not working, you can try setting 'Direct Connection'.

For the browser problems. When you install Avast, it creates a local transparent proxy that routes all HTTP (TCP over port 80) connections through Avast, this is the Avast Web-Shield. If this is not working, all connections using HTTP will fail. So, first, open Avast and check the status of the shields. If everything appears to running correctly and you still can't connect or update, it may be your installation is broken in some way. In that case.

1. Download the avast! Uninstall Utility
2. You had NIS installed so, download the Norton Removal Tool
3. Run the Norton removal tool first and reboot
4. Run the Avast removal tool and reboot (if either removal tool fails, try safe mode - shift+F8 at boot)
5. Reinstall Avast and see what happens
 

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

Aneek

New Member
The proxy settings I'm referring to are those defined in Control Panel/Internet Options/Connections/Settings. Avast can use the settings set here or can use it's own. In Avast/Settings/Updates/Proxy Settings the default is usually 'Auto detect' if that's not working, you can try setting 'Direct Connection'.

For the browser problems. When you install Avast, it creates a local transparent proxy that routes all HTTP (TCP over port 80) connections through Avast, this is the Avast Web-Shield. If this is not working, all connections using HTTP will fail. So, first, open Avast and check the status of the shields. If everything appears to running correctly and you still can't connect or update, it may be your installation is broken in some way. In that case.

1. Download the avast! Uninstall Utility
2. You had NIS installed so, download the Norton Removal Tool
3. Run the Norton removal tool first and reboot
4. Run the Avast removal tool and reboot (if either removal tool fails, try safe mode - shift+F8 at boot)
5. Reinstall Avast and see what happens
Hi Calico,
thanks for helping.
I did as you suggested.But problem not solved.
Also I am adding some fact------WEB SHIELD worked normally.
FIREWALL SETTINGS of AVAST showed (the firewall graph actually) that it is connected normally to the internet.Also my brodband connection status showed that datas are transferring normally.
Also all the SHIELDS of AVAST worked normally.
In a nutshell,All connections were OK except the numbness of AVAST update & browsers(mozilla,chrome).
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

chev65

Closed
Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)

Thanks for posting.
I did as you told me.
After resetting in cmd I restarted.The network apps like mozilla,firefox worked great.But AVAST cannot update its virus definitions like before.
Also after again restarting the PC,all problems came up again.(Mozilla,chrome cannot find any pages and AVAST cannot connect to server.)

Because resetting winsock and TCP/IP worked at first "Knew that was part of the problem" but after a reboot the problem returns I'd say that AVAST or which ever A/V you are using seems to be corrupting either winsock or the TCP/IP stack, although I can't say for certain what why those A/V's would be doing that.

This is a new Op system so problems will occur with A/V's until they get all the bugs out. It may also have to do with Windows Defender already being install on your system and a possible conflict between those A/V's. I'd say that as long as those A/V's are installed you will be fighting a losing battle until they are removed from the system which it sounds like you did already. But remember that winsock or TCP/IP may still be corrupted so running the IP reset file below may fix the problems created by the A/V's

Flush the DNS cache and restore MS's Hosts file ...
Copy and paste these lines in Note pad.

@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0


Save as flush.bat to your desktop. Right click on the flush.bat file to run it as Administrator.

Your computer will reboot itself.

Or you could just run the batch file.
 

Attachments

  • renew-ip-reset-winsock.zip
    223 bytes · Views: 173

My Computer

System One

  • OS
    Windows 8.1 Pro WMC
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built
    CPU
    Q9650 @ 4.05 GHz
    Motherboard
    Gforce 780i SLI FTW
    Memory
    8GB Gskill DDR2 1200Mhz
    Graphics Card(s)
    GTX-480
    Sound Card
    Asus D2 Xonar
    Monitor(s) Displays
    HannsG
    Screen Resolution
    1680x1050
    Hard Drives
    Gskill 120GB SSD
    PSU
    Thermal Take 1000watts
    Case
    Thermal Take Xtreme
    Cooling
    9 fans air cooled
    Keyboard
    G15 logitech
    Mouse
    G9 logitech
    Internet Speed
    50mbps

Calico

New Member
Power User
The proxy settings I'm referring to are those defined in Control Panel/Internet Options/Connections/Settings. Avast can use the settings set here or can use it's own. In Avast/Settings/Updates/Proxy Settings the default is usually 'Auto detect' if that's not working, you can try setting 'Direct Connection'.

For the browser problems. When you install Avast, it creates a local transparent proxy that routes all HTTP (TCP over port 80) connections through Avast, this is the Avast Web-Shield. If this is not working, all connections using HTTP will fail. So, first, open Avast and check the status of the shields. If everything appears to running correctly and you still can't connect or update, it may be your installation is broken in some way. In that case.

1. Download the avast! Uninstall Utility
2. You had NIS installed so, download the Norton Removal Tool
3. Run the Norton removal tool first and reboot
4. Run the Avast removal tool and reboot (if either removal tool fails, try safe mode - shift+F8 at boot)
5. Reinstall Avast and see what happens
Hi Calico,
thanks for helping.
I did as you suggested.But problem not solved.
Also I am adding some fact------WEB SHIELD worked normally.
FIREWALL SETTINGS of AVAST showed (the firewall graph actually) that it is connected normally to the internet.Also my brodband connection status showed that datas are transferring normally.
Also all the SHIELDS of AVAST worked normally.
In a nutshell,All connections were OK except the numbness of AVAST update & browsers(mozilla,chrome).

Just to be clear, you ran both removal tools, rebooted, reinstalled Avast Internet Security and you still have the same problem?

Whilst I agree with chev65 about the beta status of Windows 8 and third-party security applications, I just installed Avast Internet Security and it does work, so there would appear to be a problem with your installation/configuration. There's a couple more things you can do.

1. In Avast, open firewall settings, disable the firewall temporally, try and update/connect.
2. In Avast, go to Maintenance/Support/Generate Support Package Now. Select Basic Information and log files
3. Generate the report and attach it here.
 

Attachments

  • ais.jpg
    ais.jpg
    54.3 KB · Views: 498

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

Aneek

New Member
The proxy settings I'm referring to are those defined in Control Panel/Internet Options/Connections/Settings. Avast can use the settings set here or can use it's own. In Avast/Settings/Updates/Proxy Settings the default is usually 'Auto detect' if that's not working, you can try setting 'Direct Connection'.

For the browser problems. When you install Avast, it creates a local transparent proxy that routes all HTTP (TCP over port 80) connections through Avast, this is the Avast Web-Shield. If this is not working, all connections using HTTP will fail. So, first, open Avast and check the status of the shields. If everything appears to running correctly and you still can't connect or update, it may be your installation is broken in some way. In that case.

1. Download the avast! Uninstall Utility
2. You had NIS installed so, download the Norton Removal Tool
3. Run the Norton removal tool first and reboot
4. Run the Avast removal tool and reboot (if either removal tool fails, try safe mode - shift+F8 at boot)
5. Reinstall Avast and see what happens
Hi Calico,
thanks for helping.
I did as you suggested.But problem not solved.
Also I am adding some fact------WEB SHIELD worked normally.
FIREWALL SETTINGS of AVAST showed (the firewall graph actually) that it is connected normally to the internet.Also my brodband connection status showed that datas are transferring normally.
Also all the SHIELDS of AVAST worked normally.
In a nutshell,All connections were OK except the numbness of AVAST update & browsers(mozilla,chrome).

Just to be clear, you ran both removal tools, rebooted, reinstalled Avast Internet Security and you still have the same problem?

Whilst I agree with chev65 about the beta status of Windows 8 and third-party security applications, I just installed Avast Internet Security and it does work, so there would appear to be a problem with your installation/configuration. There's a couple more things you can do.

1. In Avast, open firewall settings, disable the firewall temporally, try and update/connect.
2. In Avast, go to Maintenance/Support/Generate Support Package Now. Select Basic Information and log files
3. Generate the report and attach it here.

Thanks Calico,for trying to help me.
For your information,After installing AVAST all worked fine (update and browsers) before reboot.
But after reboot all problems come up again.Also before rebooting,AVAST firewall was turned off.
When I tried to fix it it said--"Firewall could not be started".Although after rebooting,firewall worked fine.

As you said,I am uploading the log files generated.Its in ZIP format.
 

Attachments

  • 20120413_0026_2974426967.zip
    88.4 KB · Views: 66

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Aneek

New Member
The above log was before rebotting(after installing AVAST,when everything worked fine.)

The log I am attaching below is after rebotting (when all problems came up again).


(Do you note the differences between the size of the logs,before and after rebooting?)
 

Attachments

  • 20120413_0145_2974426967.zip
    938.4 KB · Views: 53

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Calico

New Member
Power User
What kind of account are you using when installing Avast, user or administrator?
 

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

Aneek

New Member
What kind of account are you using when installing Avast, user or administrator?

I have only one account in the OS i.e. the administrator.
But while installing AVAST I did not run it as an administrator.
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Calico

New Member
Power User
If you were logged on with an administrative account during installation that should have been enough. The reason I asked is because the logs show a lot of file access problems, both before and after the reboot. Did you try disabling the firewall after the reboot?
 

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

Aneek

New Member
If you were logged on with an administrative account during installation that should have been enough. The reason I asked is because the logs show a lot of file access problems, both before and after the reboot. Did you try disabling the firewall after the reboot?

Yeah.I turned AVAST firewall off but nothing happened (I also checked WINDOWS firewall.It was off as a 3rd party internet security was running.)
 

My Computer

System One

  • OS
    WINDOWS 8 CONSUMER VERSION
    CPU
    Intel Core 2 duo @2.66Ghz @2.67Ghz
    Motherboard
    Intel
    Memory
    3 GB
    Graphics Card(s)
    NVIDIA GEFORCE 9500GT (1GB)

Calico

New Member
Power User
Unfortunately, I can't see anything in the logs, apart from the Access Denied errors. My only guess, at this point, is a problem brought about by installing and removing different security packages, one of which left something behind that's causing Windows to misbehave. I know Avast free AV and AIS work correctly on Windows 8, so my suggestion would be to reinstall Windows and hope for the best.
 

My Computer

System One

  • OS
    Windows 7 x64 Ultimate/Windows 8.1/Linux
    CPU
    FX-8350
    Motherboard
    GA-990XA-UD3
    Memory
    16GB DDR3 Corsair Vengeance
    Graphics Card(s)
    HD7860
    Sound Card
    Xonar Essence STX
    Monitor(s) Displays
    Benq
    Screen Resolution
    1920x1080
    Hard Drives
    Various
    PSU
    Corsair HX 850W
    Case
    Corsair Obsidian
    Cooling
    Thermalright
    Keyboard
    Logitech
    Mouse
    Logitech
    Internet Speed
    50/50
    Browser
    firefox

arct

New Member
I find this forum really seem to be helpful.

Usually just resetting winsock and TCP/IP stack will fix this sort of problem. Lower left corner of screen, right click and choose, Command Prompt Admin

Type the following commands into an elevated command prompt one at a time then hit enter after each one then reboot. :)

netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)

Thanks for posting.
I did as you told me.
After resetting in cmd I restarted.The network apps like mozilla,firefox worked great.But AVAST cannot update its virus definitions like before.
Also after again restarting the PC,all problems came up again.(Mozilla,chrome cannot find any pages and AVAST cannot connect to server.)

I also have the same problem with Aneek, but has a difference in an installation. This was happened in my case. "I already have successfully installed my avast And was able to perform well in almost 2 years. just recently after a long while, I just saw my avast appeared to be expired and needs to be updated ASAP. at thesame moment, I also have discovered that my internet browsers could no longer connect to internet even my internet explorer. until then, i couldn't be able to use my internet browsers. thanks for any help in advance.
 

My Computer

System One

  • OS
    windows 8
    Computer type
    Laptop
    System Manufacturer/Model
    hp
    CPU
    intel core2 duo
    Antivirus
    avast

my2cents

Veni, Vidi, Vici
VIP Member
Guru

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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