Author Topic: SSL Errors that may be linked to Avast Anti-Track  (Read 2513 times)

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Offline Some_dude

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SSL Errors that may be linked to Avast Anti-Track
« on: September 10, 2021, 05:21:03 PM »
Hi,

I have been getting SSL errors while using Firefox for a few days. After investigation, the cause may be on of the following :

  • Agent web's "HTTPS analysis"
  • AntiTrack Premium update (my version is 2.2.453.514)

To clarify the errors I get are : Secure Connection Failed +
  • SSL_ERROR_RX_MALFORMED_ALERT  (This one got me scared as it made me think it could originate from a malware/virus)
  • SSL_ERROR_RX_UNEXPECTED_APPLICATION_DATA
  • PPR_END_OF_FILE_ERROR[\li]
These errors occure only on Firefox, that I have reinstalled from scratch (no error when trying Chrome or Edge). They keep coming up.
However, they stop coming up when I disable the 'HTTPS analysis' or AntiTrack.

Regards

Edit : Firefox version  92.0 and some 91.X.X before reinstalling it. Avast full scan reveals nothing with highest sensibility
« Last Edit: September 10, 2021, 05:26:38 PM by Some_dude »

Offline ChrysZ

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #1 on: September 11, 2021, 01:01:44 PM »
I've been dealing with this issue the past week. Unfortunately I ended up disabling Avast AntiTrack. AT inserts a code in the 'useragent'  at the end of the string which confuses websites' "sniffers". At a minimum "Sniffers determine whether you have an up-to-date browser for their site but still let you in.  However, most of the time you won't be able to connect to the site unless you use a User-Agent Switcher which is a Firefox extension.

You'll get this error: Secure Connection Failed

You can see your user-agent string by going to:  https://whatmyuseragent.com/

Here there is no code appended after the browser version:

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:92.0) Gecko/20100101 Firefox/92.0

If you see a code after 'Firefox/92.0' it will disconnect you from most sites. My research leads me to believe that AT is inserting the code.

Offline smails

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #2 on: September 12, 2021, 10:38:17 AM »
I have the same problem. Even the Avast support page does not work. This with Firefox 93.0b3

Only way to stop AntiTrack.

Offline BigLeeH

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #3 on: September 12, 2021, 02:08:58 PM »
I ran into the same problem with Anti-Track and Firefox.  I found that I would get some sort of SSL error for web pages roughly half the time.  Hitting the "Try Again" button would usually work.  The problem wasn't restricted to top-level pages, often other bits that load from their own URLs would fail so web pages with multiple ads would show error messages where half the ads were supposed to be.  I didn't mind the ads not working but when the CSS stylesheets wouldn't load it made for some pretty ugly web pages.

For now I have Anti-Track disabled and that has fixed the problem.   I'm not sure when, if ever, it will get turned back on. 

Offline Asyn

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #4 on: September 12, 2021, 02:35:27 PM »
Hi guys, I forwarded it, let's see...
Win 8.1 [x64] - Avast PremSec 21.9.6675.IBC [UI.671] - EEK - Firefox ESR 78.15 [NS/uBO/PB] - TB 91.2.1
Avast-Tools: Secure Browser 95.0 - Cleanup 21.3 - SecureLine 5.13 - Driver Updater 21.3 - CCleaner 5.85
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline Matheus69

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #5 on: September 12, 2021, 07:11:42 PM »
I'm with the same problem. Started yesterday after the installation of Avast Anti Track. Firefox open pages with errors like:

Falha na conexão segura

Ocorreu um erro durante uma conexão com forum.avast.com. PR_END_OF_FILE_ERROR

Offline r@vast

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #6 on: September 13, 2021, 11:17:13 AM »
I'm with the same problem. Started yesterday after the installation of Avast Anti Track. Firefox open pages with errors like:

Falha na conexão segura

Ocorreu um erro durante uma conexão com forum.avast.com. PR_END_OF_FILE_ERROR

Hi,

Please contact support via https://support.avast.com/contact/

Offline beanimated

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #7 on: September 14, 2021, 01:12:26 PM »
Same problem, latest version installed.

Offline r@vast

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #8 on: September 14, 2021, 02:24:34 PM »
Same problem, latest version installed.

Hi,

Our developers are looking into this issue. Could you contact support via https://support.avast.com/contact/ or provide us with a support file, please?
To generate the support file, please see this link.
https://support.avast.com/en-ww/article/Submit-support-file

Offline Some_dude

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #9 on: September 16, 2021, 06:42:19 PM »
Hi,

I'm posting to notify that this problem still occurs with the new Avast update and AntiTrack update.

Regards

Offline chris..

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #10 on: September 17, 2021, 12:48:32 PM »
Hi,
Same problem for a French user.
https://forum.avast.com/index.php?topic=304047.0
He has just requested support

Offline r@vast

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #11 on: September 17, 2021, 04:26:37 PM »
Hi,

Our developers are still working on this issue. (Workaround - try to refresh the webpage a few times or temporarily disable AntiTrack). We are sorry for the inconvenience.

Offline Nuno53

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #12 on: September 24, 2021, 04:30:00 PM »
Hi, same problem here with Firefox.

With Anti-track work fine. I only need to disable 'HTTPS analysis' on Avast Premium Security and the issue disappear.

Regards

Offline r@vast

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #13 on: September 24, 2021, 05:33:18 PM »
Hi, same problem here with Firefox.

With Anti-track work fine. I only need to disable 'HTTPS analysis' on Avast Premium Security and the issue disappear.

Regards

Hi,

Can you clarify if you are getting errors for all the sites on Firefox?
Could you provide us with examples of websites you were accessing and screenshots of the errors, please?


Offline sfkay

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Re: SSL Errors that may be linked to Avast Anti-Track
« Reply #14 on: October 03, 2021, 08:11:38 AM »
I'm having the same problem with SSL errors. I've just bought  this program and am very unhappy its  not working properly. Looks like Avast has dudded me my money.

Please dont tell me to use the Support app as I try to install as admin, it asks permission then doesnt work, I cant see a process start up for it either. I've dled it several times.