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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: REDACTED on July 09, 2015, 03:55:54 PM

Title: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 09, 2015, 03:55:54 PM
First of all, I've had nothing but good experiences with AVAST. This one Windows 7 64 bit computer I've using though has had some issues. When Web Shield is enabled most internet/network traffic is blocked. I can reach google docs and that's pretty much it. AVAST won't even update from it's own servers when Web Shield is enabled.
It did not do this until about 3 weeks ago.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: Eddy on July 09, 2015, 04:07:09 PM
Perform a repair of avast and see if the problem is solved.
If not, perform a clean installation of the latest avast version.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 20, 2015, 10:04:40 PM
That worked. I'll default to that tactic next time.

Thanks.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: Pondus on July 20, 2015, 10:18:44 PM
This is also sometimes related to third party firewalls with outbound protection.
After a avast program update you sometimes must delete all avast rules in firewall, reboot and create new rules when asked

Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 21, 2015, 02:28:55 PM
Yeah, stopped working again. I just disabled Web Shield permanently and that fixed it. Won't update without doing that.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 21, 2015, 05:15:21 PM
Yeah, stopped working again. I just disabled Web Shield permanently and that fixed it. Won't update without doing that.
Not a good idea since 80% of all infections come from the internet and the Webshield  module is what protects you on the internet.

Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 21, 2015, 05:29:26 PM
Not only has the webshield caused problems by not loading and proclaiming invalid certificates even on banking sites (** plus Avast's own sites) , but the mailshield also brings a number of mail programs to a halt by saying that huge ISP's such as Bell Canada *Sympatico is also invalid.  Personally I have no problem on one system and huge problems on this one. I have read many posts from now and past and uninstalled and reinstalled Avast with no joy. In past, it was said, a new build fixed it as clearly this new version 10.3.2223 has had a negative impact.

I hope the powers that be will fix it since it was not in any other build.  Fingers crossed but unless that happens it looks like a number of loyal avast users will have no choice but to abandon this great product.

Cheers.




Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: essexboy on July 21, 2015, 05:58:44 PM
Is your system date and time correct ?
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 21, 2015, 06:34:13 PM
I wonder if this is similar to a topic I saw a while ago on https certificates, being down to having an old version of Firefox, the ESR version or something like that.

@ Ront50
What browser and version number does/did this happen on ?
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 21, 2015, 06:51:59 PM
Hello,

Yes my system date and time are correct. The fault occurs on Google Chrome Version 43.0.2357.134 the latest one, Firefox version 39 also the latest for browsers

Email clients:
Older outlook express and Sympatico.ca is the ISP, one of the largest in Canada and Thunderbird V 31.5.0 ... needs an update just recent that is used for only hotmail sites and they are all deemed to have incorrect certificates since this latest Avast update

Fair to say the email clients and browsers do not seem to be the issue here. If I do a system restore to your last version since I installed this only yesterday, I am confident all will work again. I am doing a system backup before I do any of that however clearly that is not the option I prefer.

Thank you in advance for any insight you might give us all.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 22, 2015, 09:43:01 AM
Hi Ront50,

which Avast product do you have, please? Could you please try uninstall and install it again?
It's really weird that Repair helped but then it broke again..

Thanks
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 22, 2015, 03:15:42 PM
Hi Martin,

I have your latest update to the free version. I never said repair worked. It did not work and I have installed and reinstalled it a number of times. The mail and webshield need to be turned off before they work. As mentioned, they claim that the most trust worthy site have bad certificates. I need your last version 2015.10..2218 as I am using on this computer. All google searchs and downloads even if they say are that version are actually 10.3.2223.

Could you please direct me to anywhere I might get your last version. I will install that and wait until your next release that hopefully will resolve this problem. Clearly the reports about certificates and sites by these versions are false

Thank you for your help and I am certain that last version will help the numerous people here having the same problem with this release.

Cheers.   ** A pinned post with a link to it would be great as you would absolutely have it on your servers somewhere and not filehippo that has only the current version even if it say's it's another.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 22, 2015, 04:17:13 PM
Hi Ront50,

which Avast product do you have, please? Could you please try uninstall and install it again?
It's really weird that Repair helped but then it broke again..

Thanks

Martin, it was the original poster artbellemar that tried Repair which supposedly worked for a while.

Easy for confusion when multiple users post in the same topic.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 22, 2015, 05:42:42 PM
Older versions can be found here:
http://www.oldapps.com/avast_antivirus.php#version-listing

But we will check it again, some devs might contact you back if you don't mind.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 22, 2015, 08:06:39 PM
Thank you kindly. Although I don't see 2218 I will download 2215 and try that. I will report back here of my success or failure. I hope the current version did not "Break" something else that will stop this from working.

By all means, please contact me as you will. I would be happy to help if possible because I spent many years in developing software even at the lowest levels and fully understand the ripple effect that one change can have in another area that had nothing to do with the original places code was changed.

You are correct DavidR, I did just jump into this thread since opening another one with the same issued seemed redundant and whomever reads this might follow what is going on.

Cheers
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 22, 2015, 09:13:38 PM
Thank you kindly. Although I don't see 2218 I will download 2215 and try that. I will report back here of my success or failure. I hope the current version did not "Break" something else that will stop this from working.

By all means, please contact me as you will. I would be happy to help if possible because I spent many years in developing software even at the lowest levels and fully understand the ripple effect that one change can have in another area that had nothing to do with the original places code was changed.

You are correct DavidR, I did just jump into this thread since opening another one with the same issued seemed redundant and whomever reads this might follow what is going on.

Cheers



I uninstalled (not using your cleaner) and reinstalled the version 10.2.2515 and now the web issue is gone and the pages display normally again. There are no certificate errors with that. On the email side, I am still getting an invalid certficate from my ISP.

I will contact them just to find out if Murphy's law hit and in fact they are having a problem but considering the size of the company, I am skeptical they are. I will enquire anyway but it did happen exactly the first time I launched my email after installing your 10.3.2223 version.

Once again I will report back. I must turn off the mail shield when invoking my client (Outlook Express) < --- yes old but if it aint broke, don't fix it as the saying goes to get to my ISP's email server, sympatico.

Cheers 

PS ** Ps I hope the powers that be fix your new version. I have unchecked update new programs so I hope it does not go back to the new one although the popup has advised me it is available.

Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 23, 2015, 10:39:44 AM
Hi Ront50,

what OS you have, please?
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 23, 2015, 02:26:45 PM
Hi Ront50,

what OS you have, please?

The system with this problem is XP!  I have the new version installed on one system with W7 with no issues seen and I have two more W7 systems that I am refraining from updating in the event it goes wrong.

Cheers
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 23, 2015, 02:44:56 PM
Thanks Ront50,
 that was our suspicion ;-) Problem is only in some cases on Win XP, we are working on a fix already.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 23, 2015, 08:37:21 PM
Thanks Ront50,
 that was our suspicion ;-) Problem is only in some cases on Win XP, we are working on a fix already.

That is great news MartinZ and is commendable that you will still support it. There are still tons of XP users in the world as you know. It could be worse, it could have been millenium :D

Cheers
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 24, 2015, 09:23:52 AM
In your case should help if you got to Settings->Active Protection->Web Shield-> Customize->Uncheck "Enable HTTPS Scanning"

Martin

P.S. what you like to much about Win XP? ;-) We know a lot of users still use it but we don't know why ;-)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 25, 2015, 04:32:05 AM
In your case should help if you got to Settings->Active Protection->Web Shield-> Customize->Uncheck "Enable HTTPS Scanning"

Martin

P.S. what you like to much about Win XP? ;-) We know a lot of users still use it but we don't know why ;-)

Very simple. I have some really good software that runs on it (Pro audio stuff). It's reliable and fast. If I were to update that system to a new OS I would lose so many years of data and programs that will just not work on them.  If  you really don't know why we like XP I am thinking you never had the opportunity to use it for any length of time which is the case for many computer users that have not been at it since the first Commodore 64 and Apple ... even before truth be told :) We watched the migration, saw how MS likes to screw up every 2nd OS. Great marketing for them, for us? Not so much. The old saying "If it ain't broke, don't fix it" comes to mind.

I am pretty sure I did at some point turn off HTTPS but so many important websites use it so if that will leave it vulnerable, I am not certain it's a great solution.

Does this mean there will be no change to the existing product to address our issues?

Cheers
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: davexnet on July 25, 2015, 05:20:36 PM
Is your XP up to date with all the updates ?  Is it 32 or 64 bit OS ?
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 25, 2015, 06:06:04 PM
"If I were to update that system to a new OS I would lose so many years of data and programs that will just not work on them. "
Windows 8 is a lot more tolerant of old software than any of it's predecessors. Since Windows 10 is build on the back of Windows 8,
this also holds true of the latest version of Windows which will be released on 7/29/2015.
I had some very old 16 bit games that never ran on windows 7 but worked on Windows 8.
Give it a try, you may just be surprised.  You could always try one of those programs you aren't sure about on a friends newer OS. :)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 06:49:09 AM
Hello,

I just wanted to add my voice to the growing chorus about this issue...because I've been affected, too.

* I just updated/upgraded my Avast Free Antivirus 2015 to v10.3.2223 (just like some others I saw in this thread)
* I run WinXP as well (just like some others I saw in this thread)
* I get peculiar "invalid certificate" errors at some unexpected sites (i.e., google.com, netaddress.com {my email provider} and avast.com{!} are those I tried, and where the error also showed up)

But...

* I called Avast for support (7/26/15, 11:30pm ET, usually GMT-5) and the technician (Benjamin) insisted that this was my computer's fault, and not Avast's for supplying a bad update.
* He claimed to not have heard of this issue before my call (do they NOT read these forums?)
* He then insisted that I'd need to pay for "Tier 2 Support" that he said I needed to fix this.
* He THEN said that I should talk to Microsoft for further assistance because (again) it was my computer (which he kept saying was running "Windows HP", not XP, while besmirching MY computer knowledge as, he insisted, necessarily being less than his -- I have my doubts) causing this as far as he was concerned...even though this thread intimates that it was, indeed, Avast's update, instead, as I suspected.

So, anyway...

I'm posting here so that I can hopefully receive an update of an imminent(?) post from someone authoritative and knowledgeable at Avast with more information.  I hope it comes soon...

Thanks,
Bram
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: Asyn on July 26, 2015, 06:58:47 AM
* I called Avast for support (7/26/15, 11:30pm ET, usually GMT-5) and the technician (Benjamin) insisted that this was my computer's fault, and not Avast's for supplying a bad update.
* He claimed to not have heard of this issue before my call (do they NOT read these forums?)
* He then insisted that I'd need to pay for "Tier 2 Support" that he said I needed to fix this.
* He THEN said that I should talk to Microsoft for further assistance because (again) it was my computer (which he kept saying was running "Windows HP", not XP, while besmirching MY computer knowledge as, he insisted, necessarily being less than his -- I have my doubts) causing this as far as he was concerned...even though this thread intimates that it was, indeed, Avast's update, instead, as I suspected.
Report your experience to Vojta Nekvapil: nekvapil[at]avast.com (3rd Party Support Manager)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 07:01:16 AM
* I called Avast for support (7/26/15, 11:30pm ET, usually GMT-5) and the technician (Benjamin) insisted that this was my computer's fault, and not Avast's for supplying a bad update.
* He claimed to not have heard of this issue before my call (do they NOT read these forums?)
* He then insisted that I'd need to pay for "Tier 2 Support" that he said I needed to fix this.
* He THEN said that I should talk to Microsoft for further assistance because (again) it was my computer (which he kept saying was running "Windows HP", not XP, while besmirching MY computer knowledge as, he insisted, necessarily being less than his -- I have my doubts) causing this as far as he was concerned...even though this thread intimates that it was, indeed, Avast's update, instead, as I suspected.
Report your experience to Vojta Nekvapil: nekvapil[at]avast.com (3rd Party Support Manager)

Thank you for responding, Asyn.

Is this "Vojtech", who posted in another thread here, wanting to see logs related to this issue?

Thanks again,
Bram
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: Asyn on July 26, 2015, 07:13:12 AM
Is this "Vojtech", who posted in another thread here, wanting to see logs related to this issue?
Nope.

PS: Workaround (XP): Disable HTTPS-Scanning in the web shield.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 09:59:36 AM
Is this "Vojtech", who posted in another thread here, wanting to see logs related to this issue?
Nope.

PS: Workaround (XP): Disable HTTPS-Scanning in the web shield.

Thank you, Asyn.  Also, it took me a while to figure out how to do so, but I've implemented the workaround.  Here's hoping (a) that it works, and (b) that it won't reduce my protection to an unacceptable level.

Thanks again,
Bram
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: Asyn on July 26, 2015, 10:08:10 AM
You're welcome.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 03:30:41 PM
Thanks Ront50,
 that was our suspicion ;-) Problem is only in some cases on Win XP, we are working on a fix already.

That is great news MartinZ and is commendable that you will still support it. There are still tons of XP users in the world as you know. It could be worse, it could have been millenium :D

Cheers

Hello
I'm here to say that the issue is not on XP only. I have win 8.1 and my PC is affected. Since the update pages on IE, Chrome, Opera, Firefox seem to load forever. Downloads are very slow in general. When I disable Avast everything is back to normal. When I enable it slows down or blocks programs. It affects Teamviewer which is sometimes connected, sometimes not connected to server. When not connected and I disable Avast it connects immediately. I'm using an executable jar file to remote view/control my android devices and it's blocked by Avast now. I used an android emulation under oracle virtual box. I lost it after the Avast program update. I could not recover it because when I did system restore to previous point it said Avast prevented that. I have two other computers which have not version 10.3.2223 (they are set to manual update) and they work without problems. On the affected computer I'm sure Avast was configured to "ask when an update is available", but it updated without asking after a PC restart and then the problems began.
I hope the issue will be addressed not only for XP but for all affected platforms.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 04:28:57 PM
* I called Avast for support (7/26/15, 11:30pm ET, usually GMT-5) and the technician (Benjamin) insisted that this was my computer's fault, and not Avast's for supplying a bad update.
* He claimed to not have heard of this issue before my call (do they NOT read these forums?)
* He then insisted that I'd need to pay for "Tier 2 Support" that he said I needed to fix this.
* He THEN said that I should talk to Microsoft for further assistance because (again) it was my computer (which he kept saying was running "Windows HP", not XP, while besmirching MY computer knowledge as, he insisted, necessarily being less than his -- I have my doubts) causing this as far as he was concerned...even though this thread intimates that it was, indeed, Avast's update, instead, as I suspected.
Report your experience to Vojta Nekvapil: nekvapil[at]avast.com (3rd Party Support Manager)

Asyn,

That address doesn't work as emails sent there get kicked back because the user is "Unknown".  Are you sure there's no typo?

Bram
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 26, 2015, 04:45:56 PM

nekvapil(at)avast.com
The address is correct simply replace the (at) with the @ symbol.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 04:53:51 PM

nekvapil(at)avast.com
The address is correct simply replace the (at) with the @ symbol.

I did that, bob3160, and this is part of what came back:

"<nekvapil [at] avast [dot] com>: host mx2.avast.com[91.213.143.6] said: 550 5.1.1
<nekvapil [at] avast [dot] com>: Recipient address rejected: User unknown in virtual
mailbox table (in reply to RCPT TO command)"

Bram
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 26, 2015, 05:01:37 PM
* I called Avast for support (7/26/15, 11:30pm ET, usually GMT-5) and the technician (Benjamin) insisted that this was my computer's fault, and not Avast's for supplying a bad update.
* He claimed to not have heard of this issue before my call (do they NOT read these forums?)
* He then insisted that I'd need to pay for "Tier 2 Support" that he said I needed to fix this.
* He THEN said that I should talk to Microsoft for further assistance because (again) it was my computer (which he kept saying was running "Windows HP", not XP, while besmirching MY computer knowledge as, he insisted, necessarily being less than his -- I have my doubts) causing this as far as he was concerned...even though this thread intimates that it was, indeed, Avast's update, instead, as I suspected.
Report your experience to Vojta Nekvapil: nekvapil[at]avast.com (3rd Party Support Manager)

Asyn,

That address doesn't work as emails sent there get kicked back because the user is "Unknown".  Are you sure there's no typo?

Bram

I change the [at] to the normal email @ ?

This is a valid email, I have just sent an email to that address and it appears to have gone through. I have referred him to your post.

EDIT: That email has just bounced back.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 07:36:24 PM
Update Avast Program vs.10.3.2223  on July 25, 2015.....bad news!!
Running XP SP2, Have respected Avast for years....until alerts of the blocking of Mozilla, facebook, startpage, and even Avast sites themselves.  Restore  back to 2015.10.2.2218 seems to have worked for now. ignoring  Pop up telling me to update Avast Program until it gets fixed.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 26, 2015, 07:58:16 PM
Update Avast Program vs.10.3.2223  on July 25, 2015.....bad news!!
Running XP SP2, Have respected Avast for years....until alerts of the blocking of Mozilla, facebook, startpage, and even Avast sites themselves.  Restore  back to 2015.10.2.2218 seems to have worked for now. ignoring  Pop up telling me to update Avast Program until it gets fixed.

You could have saved some trouble by just disabling the HTTPS scanning in the version as mentioned in Reply #20 and Reply #27
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 26, 2015, 08:26:22 PM
Update Avast Program vs.10.3.2223  on July 25, 2015.....bad news!!
Running XP SP2, Have respected Avast for years....until alerts of the blocking of Mozilla, facebook, startpage, and even Avast sites themselves.  Restore  back to 2015.10.2.2218 seems to have worked for now. ignoring  Pop up telling me to update Avast Program until it gets fixed.

You could have saved some trouble by just disabling the HTTPS scanning in the version as mentioned in Reply #20 and Reply #27
(http://www.screencast-o-matic.com/screenshots/u/Lh/1437840647533-69944.png)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 26, 2015, 11:44:09 PM
Yes, bob3160, thank you, I'm one who did that...disabling HTTPS as you showed...but the idea is that one shouldn't HAVE TO do that in order to have Avast run as intended.

This is a bug in the update that Avast will hopefully be fixing soon.  I surely hope so anyway...

Also, given that I and someone else have indeed found that the nekvapil@... address isn't working, do you (or does anyone) have an alternative?

Thanks again,
Bram Weiser
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 26, 2015, 11:49:54 PM
I have already alerted one of my contacts at Avast of the email problem.
Remember it's Sunday today. I don't expect any answer till tomorrow. :)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 27, 2015, 12:15:34 AM
I have already alerted one of my contacts at Avast of the email problem.
Remember it's Sunday today. I don't expect any answer till tomorrow. :)

Thanks, bob3160.  That's fine, and understandable.

If he/they(/you?) can please let us know when the email issue is resolved (and if, say, there's a different address we should use...and, if so, what it would be), that would be great, too!

Thanks,
Bram Weiser
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 27, 2015, 12:33:08 AM
It is fair to say that disabling functionality of a product is a bandaid solution to a coding bug. Here's hoping it will be fixed in the next version but until then, I have reverted back to an earlier version without the bug. MartinZ did say a fix was in the works but I have not seen him back in this thread yet and I would like to believe turning off HTTPS is not the fix he meant considering the number of pages that are S these days. I am really not keen on turning off SSL on pages like my banking and any other where sensitive information is shared so will it work, probably and possibly since I will not do that but is it a good idea? Easy to figure out.

Cheers
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 27, 2015, 12:38:37 AM
I have already alerted one of my contacts at Avast of the email problem.
Remember it's Sunday today. I don't expect any answer till tomorrow. :)

Thanks, bob3160.  That's fine, and understandable.

If he/they(/you?) can please let us know when the email issue is resolved (and if, say, there's a different address we should use...and, if so, what it would be), that would be great, too!

Thanks,
Bram Weiser
Once I know, you'll know unless someone from Avast post a reply directly.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 27, 2015, 01:24:59 AM
It is fair to say that disabling functionality of a product is a bandaid solution to a coding bug. Here's hoping it will be fixed in the next version but until then, I have reverted back to an earlier version without the bug. MartinZ did say a fix was in the works but I have not seen him back in this thread yet and I would like to believe turning off HTTPS is not the fix he meant considering the number of pages that are S these days.

I am really not keen on turning off SSL on pages like my banking and any other where sensitive information is shared so will it work, probably and possibly since I will not do that but is it a good idea? Easy to figure out.

Cheers

The reason earlier versions didn't have this bug, was previously XP and Vista didn't have the infrastructure to enable avast to scan HTTPS pages. HTTPS scanning on XP and Vista was only introduced from 10.3.2223 when avast made changes to enable XP and Vista to scan HTTPS pages.

I think you are confused by what was suggested disabling HTTPS scanning is in the Web Shield settings - not trying to turn off SSL on your banking pages (which I don't think you can do for sites that are specifically HTTPS). They would remain using SSL/TLS just that avast web shield wouldn't scan those pages.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 27, 2015, 01:55:29 AM
Hi DavidR,

No I am aware and just posted out wrong in haste. I understand that those sites will only use browsers that support it, I really meant to say, disabling that in the web shield was not a great idea considering the number of pages these days that are HTTPS. We could not even get to the Avast site due to that. I still maintain, turning off the Enable HTTPS scanning is not what most people would want in a Virus program based on that.  I do realize the option is not available on the earlier version although it is available in 10.2.2218 as I am running that right here and now, hence "The bug"  Fingers crossed it might be fixed because reality is there is still a huge XP user base out there and of course we want all the pages scanned since I am very confident in my banking site, the others? Not so much.

Cheers.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 27, 2015, 04:24:09 PM
Well it isn't a fix but a work around, which was suggested to save going back to an earlier version that has the same impact in XP and Vista, they can't scan HTTPS pages. Not to mention you would lose out on any other benefits that were included and working in 10.3.2223.

The weird thing is that it isn't consistent across all XP systems (mine is fine), which can only make it harder to pin down the exact cause.

EDIT: It seems this may have been pinned down as in another post they believe it is for those still using XP SP2 - my guess it seems that the mod to be able to scan HTTPS doesn't work in XP SP2 - we will have to wait and see. But what it means those still using XP SP2 won't have the HTTPS scanning function or those with SP2 will have to get SP3. Not sure how that would work with XP Pro SP2 64bit as there is no SP3 for that OS version.

See: https://forum.avast.com/index.php?topic=174079.msg1237172#msg1237172 (https://forum.avast.com/index.php?topic=174079.msg1237172#msg1237172), last paragraph.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: skinnypops on July 27, 2015, 06:56:08 PM
hi all,

just to note. https scanning all fine here on win vista home premium.

skinnypops

Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 27, 2015, 08:05:57 PM
hi all,

just to note. https scanning all fine here on win vista home premium.

skinnypops

This has been an intermittent issue with not all XP and Vista users effected, but some certainly are, all of which makes it harder to find and fix the fault.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: MartinZ on July 28, 2015, 02:39:48 PM
Hi,

the hotfix is live now, so users who have version 2223 and problems with browsing should just restart computer.
Users who will update to 2223 now will already have the fix applied and HTTPS scanning will be disabled for them by default.
(applies only for XP SP2)
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 29, 2015, 12:06:48 AM
This is a still a problem with Windows 8.1.

We are now using free version .2225 , early versions also blocked traffic (2 weeks or so). But only on my children's (3) PCs are blocked ( they are running windows Family Safety ). My computer, not running the Family Safety, has worked well throughout these last few avast program updates.

If I turn off the Https scanning , as suggested in the post regarding xp issues, their PCs can once again connect to the sites (namely youtube.com).

Thanks for any updates in this regard. I hope this post isn't buried in this thread.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 29, 2015, 03:11:24 AM
This is a still a problem with Windows 8.1.

We are now using free version .2225 , early versions also blocked traffic (2 weeks or so). But only on my children's (3) PCs are blocked ( they are running windows Family Safety ). My computer, not running the Family Safety, has worked well throughout these last few avast program updates.

If I turn off the Https scanning , as suggested in the post regarding xp issues, their PCs can once again connect to the sites (namely youtube.com).

Thanks for any updates in this regard. I hope this post isn't buried in this thread.

Strange, I run Windows 8.1 and the latest version of Avast free. I have no problem accessing Youtube. I view videos, upload and download video's without problems.
Is Avast allowed access through your firewall ???
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 29, 2015, 04:28:11 AM
I don't have trouble either, but the kid's PCs do. The only difference is that they are protected from inappropriate sites by windows "Family Protection" settings. Once the https shield is turned off on avast they can once again have access to the sites that I have unblocked.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: bob3160 on July 29, 2015, 08:04:27 AM
I don't have trouble either, but the kid's PCs do. The only difference is that they are protected from inappropriate sites by windows "Family Protection" settings. Once the https shield is turned off on avast they can once again have access to the sites that I have unblocked.
What O[erating System does that computer run ???
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 29, 2015, 12:12:31 PM
Hi Guys.

I've found that last update turn off scan of SSL connections in mail shield settings too (on
my computer with XP SP2).

In my case, it caused the problem with e-mail send and receive inside TheBat mail program (my mailbox is set to TLS connection).

Everything work fine after I "checked back" SLL connection option.

Maybe this option shouldn't be automatically unchecked by the update ?
Computer work fine if only HTTPS scan is turn off.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 29, 2015, 02:50:03 PM
@    mariusz30
Read Reply #20 and Reply #48 by MartinZ avast team member.

Ideally you should update your XP SP2 to SP3, that way HTTPS scanning won't be disabled.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 29, 2015, 03:26:14 PM
I've already HTTPS scan disabled. Scan of SSL connection is a different thing (in mail shield setting). I mean when you made update which turn off HTTPS scan in XP SP2, scan of e-mail SLL connections was also disabled.

Just indicate that others which use XP SP2 and e-mail programs can have problem with e-mail send/receive after last update. They must turn back on SSL scan for mail shield, but keep HTTPS scan disabled for the websites and everything will be fine.

Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: DavidR on July 29, 2015, 03:44:56 PM
I've already HTTPS scan disabled. Scan of SSL connection is a different thing (in mail shield setting). I mean when you made update which turn off HTTPS scan in XP SP2, scan of e-mail SLL connections was also disabled.

Just indicate that others which use XP SP2 and e-mail programs can have problem with e-mail send/receive after last update. They must turn back on SSL scan for mail shield, but keep HTTPS scan disabled for the websites and everything will be fine.

There is no need to disable HTTPS as the latest avast version 10.3.2225 will detect that you have XP SP2 and disable that functionality. Even if you stuck with 2223 there was a hotfix (probably delivered during a VPS and engine update to disable that function in XP SP2.
Title: Re: Avast blocking most internet traffic when Web Shield is enabled
Post by: REDACTED on July 30, 2015, 04:54:39 PM
Ref: Avast blocking most internet traffic when Web Shield is enabled - well it's worse than this with my XP PC.

I've been using Avast successfully for many years. Normally it's excellent! But I installed vers. 10.3.2225 yesterday and it has corrupted my old XP workhorse. The symptoms are: (1) Avast states some shields are inactive; (2) the webshield is inactive but cannot be acivated as setting it ON is ignored; (3) eventually (and usually when starting a browser - say chrome) the PC hard stops (mouse & keyboard don't work) leaving only power off as a procedure.

I have no ideas of a workaround for this except removing Avast clears this bug (as proven three times).

I am having no trouble with my Windows 7 PC and this version of AVAST.

Just to confirm that I too, amongst the many it seems, have to keep XP running for legacy systems that do not work correctly in Windows 7.  Whether they work in W8/8.1 or 10 is immaterial. So I hope Avast will find a solution and continue to support us XP users into the future.