Avast WEBforum

Other => General Topics => Topic started by: Zyndstoff (aka Steven Gail) on March 22, 2010, 06:22:52 PM

Title: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 22, 2010, 06:22:52 PM
Here is one cause, if webshield blocks your internet connection.
I just tested this on my Win 7 x64:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
Check the values for TEMP and TMP

If the specified folder does not exist on your HDD (normally it is "%SystemRoot%\Temp"), then webshield blocks browsertraffic. IMAP, POP, SMTP work fine, also updating Avast works.
(%SystemRoot% = folder, where windows is installed, normally C:\Windows.)

In this case create that folder on your HDD ("C:\Windows\Temp") and reboot.

If the keys don't exist in the registry, create them and set values to "%SystemRoot%\Temp", then create the folder "C:\Windows\Temp" on your HDD, reboot.

As said, I have just tested this. Fact.
Title: Re: Cause for webshield blocking internet connection
Post by: DavidR on March 22, 2010, 06:36:13 PM
Hopefully this will be very useful for some users if the normal firewall, proxy settings, checks fail to resolve the problem.

However, shouldn't the Title be 'Cause for apparent Web Shield blocking internet connection' ?

As it isn't the web shield blocking the internet.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 22, 2010, 06:50:28 PM
Okay, changed the title.
Thanks for the hint.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: bob3160 on March 23, 2010, 06:35:00 PM
Thanks for the info. :)
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Laonick on March 25, 2010, 03:13:54 PM

Thanks for your reply Zyndstoff ... Re: http://forum.avast.com/index.php?topic=57570.0

I have the registry values and the temp file where you suggested it should be, so any other help or advice would be much appreciated to try to get this sorted out.

Title: Re: Cause for apparent webshield blocking internet connection
Post by: Mika_fra on March 26, 2010, 10:33:11 PM
I would like to do what you advise but I do not understand clearly what I have to do. I am not that skilled with registry and things like that. Could you provide more details on how to do it please?
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 26, 2010, 10:49:04 PM
You run regedit.exe and navigate to the above mentioned registry keys and check the values. These values are strings and show you, where your "Temp"-folder is expected to be.
Then check with win explorer if this folder is present.

E.g. if the values state: "%SystemRoot%\Temp", then you should check if the folder "C:\Windows\Temp" is present on your system. If it is not, create it.

If the two keys "tmp" and "Temp" are not present in your registry, create them with regedit.exe and set the values to "%SystemRoot%\Temp", then create the above mentioned folder with windows explorer.

Reboot.

See screenshot: regedit.exe
Title: Re: Cause for apparent webshield blocking internet connection
Post by: mkis on March 28, 2010, 02:59:18 PM
oh du liebe Zeit, herrlich, herrlich
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 28, 2010, 03:12:34 PM
Whatever it takes...  ;D the relentless pursuit of perfection.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: mkis on March 28, 2010, 03:17:48 PM
Yes, I think opening up the field for more solutions as well. DavidR pointed to some others a few posts back.

I guess it never ends really, but every solution certainly makes the difference.  :)
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Mika_fra on March 30, 2010, 11:30:45 AM
Hello,

I tried and it changed nothing :( The two keys are present in the registry and I created a tmp folder in WINDOWS folder and inside the already exisisting TEMP folder but it changed nothing. When Avast is on, I cannot access internet.

Any other idea? :(

Thanks a lot for taking time to explain the process even if it did not solve anything for me :)
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 30, 2010, 11:40:01 AM
So, the value of the keys is "%SystemRoot%\Temp" ?
And the folder "C:\Windows\Temp\" is existant?

Then I can't help any more, except maybe this: http://forum.avast.com/index.php?topic=57646.msg485911#msg485911
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Mika_fra on March 30, 2010, 11:51:30 AM
So, the value of the keys is "%SystemRoot%\Temp" ?
And the folder "C:\Windows\Temp\" is existant?

Then I can't help any more, except maybe this: http://forum.avast.com/index.php?topic=57646.msg485911#msg485911

Yes to your questions

Last solution does not work either :(
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Zyndstoff (aka Steven Gail) on March 30, 2010, 12:03:33 PM
Open a new thread with a meaningful title, so others will look into it and try to help you.
There, give your sys specs and all security and firewall software running on your system.
Sorry I can't help more than this atm.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: mkis on March 30, 2010, 03:01:28 PM
I think the key here Mike_fra is environment.

Zyndstoff has successfully instated an environment in which webshield will not block his internet connection.

The wider problem is that each user brings to each system their own particular environment, be that what it is at that time and in that place for that particular person. There are unfortunately no universal solutions, beyond what is acknowledged as good computer practice, and what is recommended as accepted defaults and settings by manufacturers and distributors of computer hardwares and/or softwares. And even these guidelines and pointers are often only practicable to a certain extent.

Best follow Zyndstoff advise and give the forum some idea of the environment in which yr problem is being found.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: patrick | kcirtap on April 14, 2010, 07:26:24 PM
mkis

signed !
Title: Re: Cause for apparent webshield blocking internet connection
Post by: mkis on April 14, 2010, 10:02:06 PM
Do you mean a certified world?

Unfortunate I live 'in the wild', outside any institution network shield - other than ISP and other mandatory
Title: Re: Cause for apparent webshield blocking internet connection
Post by: patrick | kcirtap on April 15, 2010, 12:34:37 AM
I think the key here Mike_fra is environment.

Zyndstoff has successfully instated an environment in which webshield will not block his internet connection.

The wider problem is that each user brings to each system their own particular environment, be that what it is at that time and in that place for that particular person. There are unfortunately no universal solutions, beyond what is acknowledged as good computer practice, and what is recommended as accepted defaults and settings by manufacturers and distributors of computer hardwares and/or softwares. And even these guidelines and pointers are often only practicable to a certain extent.

Best follow Zyndstoff advise and give the forum some idea of the environment in which yr problem is being found.

Signed both  ;)
You're doing a good job!
Keep it up!
Title: Re: Cause for apparent webshield blocking internet connection
Post by: mkis on April 15, 2010, 01:05:56 AM
yes I have a video card that just wont take the driver.
performance is okay but suboptimal - I've tried everything i can so far think of

These things happen  ???
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Plshep on August 08, 2010, 01:57:45 PM
I have discovered another cause for this problem.

I had exactly the same problem, no webpages displayed when webshield was running. I traced it down to an old copy of Norton Internet Security which I had un-installed. Although it has been uninstalled using add/remove programs it was still causing this problem.

I downloaded and ran the Norton Removal Tool and Avast webshield problem went away.

Paul
Title: Re: Cause for apparent webshield blocking internet connection
Post by: DavidR on August 08, 2010, 04:03:06 PM
Yes, that may well be the case. However, this topic is like an over and above the usual suspects checks which would have been suggested, firewall blocking the web shield or another security application or remnants of previous AVs.

Welcome to the forums.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: Shelty on January 20, 2011, 02:30:09 AM
I am not  comfortable  messing with the registry either.   So far,   I am in limbo with my issues.      Nice fix, but only if one is   comfortable with messing with the registry.  not me.    :-\
Title: Re: Cause for apparent webshield blocking internet connection
Post by: bob3160 on January 20, 2011, 04:15:28 AM
I am not  comfortable  messing with the registry either.   So far,   I am in limbo with my issues.      Nice fix, but only if one is   comfortable with messing with the registry.  not me.    :-\
Please start your own topic and give us as much information about your problem
as possible so that we may help you solve your problem.
Title: Re: Cause for apparent webshield blocking internet connection
Post by: ricthot on May 31, 2011, 02:42:58 AM
Confirming this FIXED my web shield "blocking everything-HTTP problem"!

I already had the keys in my registry set to %WINDIR%\Temp and %WINDIR%\tmp but it looks like AVAST doesn't like that path, even if it is valid... Changed this to %SystemDir%\Temp and it fixed it instantly!

This is weird though because I have this WIndows 7 installation since December and AVAST never complained about, in my case, problem started with the 6.0.1125 upgrade!