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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: citizenkenneth on August 21, 2018, 10:50:20 PM

Title: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 21, 2018, 10:50:20 PM
I just updated Avast to version 18.6.2349 and now I can't open websites in Firefox and Edge. I can successfully ping sites via Windows command prompt but not via my Internet browser. Current solution to my problem is to disable Avast shield control and everything works again. I'm running Windows 10 with all the latest updates.

Any suggesting?
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 21, 2018, 11:00:52 PM
Okay, by messing with the settings I have isolated the problem to the Web Shield component. When I deactivate the Web Shield component everything works again.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Dragon Knight on August 21, 2018, 11:21:43 PM
Is anyone having a similar issue with Google Chrome?
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: DavidR on August 22, 2018, 12:36:47 AM
Okay, by messing with the settings I have isolated the problem to the Web Shield component. When I deactivate the Web Shield component everything works again.

Disabling a scan isn't actually going to solve the issue, this could well be your firewall blocking the Web Shield accessing the web.

What is your firewall ?
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 22, 2018, 01:35:52 AM
Okay, by messing with the settings I have isolated the problem to the Web Shield component. When I deactivate the Web Shield component everything works again.

Disabling a scan isn't actually going to solve the issue, this could well be your firewall blocking the Web Shield accessing the web.

What is your firewall ?

I never said it was a final solution. But it was more more preferable to just disable the Web Shield component versus disabling Avast entirely, as a temporary solution. And the problem started right after I had restarted my PC after applying the new update.

As for a firewall, I use the inbuilt in Windows 10.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 22, 2018, 01:47:35 AM
Programs affected by the Web Shield:

OneDrive
Dropbox
Steam
Thunderbird
TeamViewer
qBittorent

Not affected:

Avast
PowerShell
Command Prompt
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: wilsonmatematico on August 22, 2018, 02:15:29 AM
I have the same problem in my internet. After update 18.6.2349 avast blocking access to DNS.
What's wrong with the avast update?
I use firewall native from Windows 7, but the firewall doesn't the problem.
I disable the web shield for use internet, because web shield is blocking access to DNS
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: news_reports on August 22, 2018, 03:07:42 AM
Same problem.  I have Windows 7.  After updating to 18.6.2349, I am having difficulties accessing Chrome, Avast site, Network & Sharing Center etc.  I can only turn computer off manually (force shut-down) and even that takes time.  When I log in again, it seems o.k., but this sequence of events has happened twice so far today.  I am not computer-savvy.  What to do?
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Filip Braun on August 22, 2018, 11:00:56 AM
Hello,

Thank you all for the reports.
We are looking into the issue.

If possible, could you please provide more details like:
- Your Avast edition (Free, Internet Security, ...)
- The exact error message from the browser (ideally with info about browser version)
- Does the issue appear immediately after enabling Web Shield or is it working for some time and then breaks?
- Does ping of domain work or just ping of IP address?
- Generate support package when the issue appears and send us the ID: https://support.avast.com/en-ww/article/Submit-support-file
- Generate a Wireshark PCAP (https://www.wireshark.org/) with the issue (record and try to browse + specify which URL you tried to visit during the capture) and send us a download link or upload it to our FTP: https://support.avast.com/en-eu/article/FTP-file-upload
- Create a dump file of AvastSvc.exe and send us a download link or upload it to our FTP: https://support.avast.com/en-eu/article/FTP-file-upload

Thank you,
Filip
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 22, 2018, 12:57:54 PM
Hello,

Thank you all for the reports.
We are looking into the issue.

If possible, could you please provide more details like:
- Your Avast edition (Free, Internet Security, ...)
- The exact error message from the browser (ideally with info about browser version)
- Does the issue appear immediately after enabling Web Shield or is it working for some time and then breaks?
- Does ping of domain work or just ping of IP address?
- Generate support package when the issue appears and send us the ID: https://support.avast.com/en-ww/article/Submit-support-file
- Generate a Wireshark PCAP (https://www.wireshark.org/) with the issue (record and try to browse + specify which URL you tried to visit during the capture) and send us a download link or upload it to our FTP: https://support.avast.com/en-eu/article/FTP-file-upload
- Create a dump file of AvastSvc.exe and send us a download link or upload it to our FTP: https://support.avast.com/en-eu/article/FTP-file-upload

Thank you,
Filip

- Avast Free Antivirus version 18.6.2349
- Firefox Quantum 61.0.2 (64 bit) & Microsoft Edge 42.17134.1.0. No error messages just a blank constant never ending loading.... site.
- The issue appear instantaneously after the Web Shield component is activated.
- Does ping of domain work or just ping of IP address?
Quote
Ping test with Avast Free Antivirus - Web Shield Turned Off

C:\Users\CK>ping avast.com

Pinging avast.com [77.234.41.52] with 32 bytes of data:
Reply from 77.234.41.52: bytes=32 time=259ms TTL=53
Reply from 77.234.41.52: bytes=32 time=465ms TTL=53
Reply from 77.234.41.52: bytes=32 time=222ms TTL=53
Reply from 77.234.41.52: bytes=32 time=258ms TTL=53

Ping statistics for 77.234.41.52:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 222ms, Maximum = 465ms, Average = 301ms

C:\Users\CK>ping 77.234.42.85

Pinging 77.234.42.85 with 32 bytes of data:
Reply from 77.234.42.85: bytes=32 time=174ms TTL=48
Reply from 77.234.42.85: bytes=32 time=151ms TTL=48
Reply from 77.234.42.85: bytes=32 time=156ms TTL=48
Reply from 77.234.42.85: bytes=32 time=516ms TTL=48

Ping statistics for 77.234.42.85:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 151ms, Maximum = 516ms, Average = 249ms

   
Ping test with Avast Free Antivirus - Web Shield Turned On
   
C:\Users\CK>ping avast.com

Pinging avast.com [77.234.41.52] with 32 bytes of data:
Reply from 77.234.41.52: bytes=32 time=289ms TTL=53
Reply from 77.234.41.52: bytes=32 time=232ms TTL=53
Reply from 77.234.41.52: bytes=32 time=428ms TTL=53
Reply from 77.234.41.52: bytes=32 time=362ms TTL=53

Ping statistics for 77.234.41.52:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 232ms, Maximum = 428ms, Average = 327ms

C:\Users\CK>ping 77.234.42.85

Pinging 77.234.42.85 with 32 bytes of data:
Reply from 77.234.42.85: bytes=32 time=207ms TTL=48
Reply from 77.234.42.85: bytes=32 time=412ms TTL=48
Reply from 77.234.42.85: bytes=32 time=157ms TTL=48
Reply from 77.234.42.85: bytes=32 time=168ms TTL=48

Ping statistics for 77.234.42.85:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 157ms, Maximum = 412ms, Average = 236ms

C:\Users\CK>
-Avast Support Tool File ID V4RYM
-Wireshark PCAP Capture was uploaded to the Avast FTP server. Sites I tried: avast.com, microsoft.com and opening of Steam app.
  Filename: File ID V4RYM.rar
  RAR package Password: virus
- For some reason I can't make a dump file of AvastSvc.exe. When I try I get a Access Denied. It is the same with ProcDump and ProcessHacker. All instances was run as admin.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Filip Braun on August 22, 2018, 01:43:59 PM
Awesome, thank you very much!
We're looking at it right now.

Quote
- For some reason I can't make a dump file of AvastSvc.exe. When I try I get a Access Denied. It is the same with ProcDump and ProcessHacker. All instances was run as admin.
Before dumping try turning OFF Avast self-defense (Settings > Troubleshooting) and File Shield.
You can also try dumping it just from Windows Task Manager.

Filip
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 22, 2018, 02:02:49 PM
Awesome, thank you very much!
We're looking at it right now.

Quote
- For some reason I can't make a dump file of AvastSvc.exe. When I try I get a Access Denied. It is the same with ProcDump and ProcessHacker. All instances was run as admin.
Before dumping try turning OFF Avast self-defense (Settings > Troubleshooting) and File Shield.
You can also try dumping it just from Windows Task Manager.

Filip

That did it. I have uploaded it to the Avast FTP server.
Filename: File ID V4RYM - AvastSvc.exe Dump File.rar
RAR Package password: virus
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Filip Braun on August 22, 2018, 04:42:24 PM
We have an idea of what is wrong.
To confirm it, could you please check and post file version of these files:
- "C:\Program Files\AVAST Software\Avast\aswStreamFilter.dll" (or in your Avast install folder)
- "C:\Windows\System32\drivers\aswStm.sys"

Thank you,
Filip
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: cloud3 on August 22, 2018, 05:42:32 PM
so, no one from server side really tested this before putting it in update?
makes you wonder if we are facing another "ccleaner" kind of problem. yeah, i am probably exaggerating, but hey i am a scaredy cat.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: mchain on August 22, 2018, 10:18:03 PM
so, no one from server side really tested this before putting it in update?
makes you wonder if we are facing another "ccleaner" kind of problem. yeah, i am probably exaggerating, but hey i am a scaredy cat.
Updating through the gui (updating over the top of old installation) could fail to update some older files.  Also, using web installer can cause issues such as this due to iffy connections.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 22, 2018, 10:22:32 PM
We have an idea of what is wrong.
To confirm it, could you please check and post file version of these files:
- "C:\Program Files\AVAST Software\Avast\aswStreamFilter.dll" (or in your Avast install folder)
- "C:\Windows\System32\drivers\aswStm.sys"

Thank you,
Filip

(https://i.imgur.com/xeJ3XP7.jpg)

I find it kinda weird that the language in the aswStreamFilter.dll says Czech when the install language is English  ??? Unless this has to do with Avast being a Czech company and nothing with the installation language ;)
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: lukas.munduch on August 23, 2018, 08:36:13 AM
Hi citizenkenneth, thank you for your screen. It seems that aswStreamFilter.dll was not updated to new version on your PC and we need to find out why. Can you please export also "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aswRvrt\Parameters" reg key and upload it to our FTP server? Thank you

Lukas
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: citizenkenneth on August 23, 2018, 09:02:01 AM
Hi citizenkenneth, thank you for your screen. It seems that aswStreamFilter.dll was not updated to new version on your PC and we need to find out why. Can you please export also "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aswRvrt\Parameters" reg key and upload it to our FTP server? Thank you

Lukas

Done

Filename: File ID V4RYM aswRvrt Reg Export.rar
RAR Package Password: virus
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: lukas.munduch on August 23, 2018, 12:40:09 PM
Thank you very much. Our developers are working on that
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Luukjr on August 23, 2018, 08:36:18 PM
Is anyone having a similar issue with Google Chrome?

Yes, laptop got stuck completely. I followed the advice on malwarebytesforum and turned off the real site protection. It works...for now.
https://forums.malwarebytes.com/topic/235523-possible-conflict-between-malwarebytes-and-avast/
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Filip Braun on August 24, 2018, 10:10:14 AM
Hello,

We have identified the issue as a problem during program update, that left some old Avast stuff there, that should have been updated.

To fix the problem please perform a repair: https://support.avast.com/en-eu/article/Repair-Antivirus
Or uninstall and newly re-install your Avast Antivirus.

Permanent fix for the update issue is coming in future version.

Thank you,
Filip
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: chris.. on August 24, 2018, 05:45:00 PM

To fix the problem please perform a repair: https://support.avast.com/en-eu/article/Repair-Antivirus
Filip

some french users with this issue seem to say repair doesn't work  :-\ stream filter stays with v.17.8.3705.0

Quote
Or uninstall and newly re-install your Avast Antivirus.

this seems to be the solution waiting the next update  :)
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on August 24, 2018, 10:25:45 PM

To fix the problem please perform a repair: https://support.avast.com/en-eu/article/Repair-Antivirus (https://support.avast.com/en-eu/article/Repair-Antivirus)
Filip

some french users with this issue seem to say repair doesn't work  :-\ stream filter stays with v.17.8.3705.0

Quote
Or uninstall and newly re-install your Avast Antivirus.

this seems to be the solution waiting the next update  :)
Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204

If Repair doesn't fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: chris.. on August 25, 2018, 07:23:11 AM
users do not need this kind of help that has already been given above
A repair doesn't work !!!
there is no need for a clean installation, a simple re-installation works (according to users), as already proposed by Filip Braun.
Of course the clean installation procedure is generally proposed in the French forum in a post-it topic called "toolbox" (https://forum.avast.com/index.php?topic=201741.0) that I created to help French users (and yes, I spend time helping myself) ,procedure to use only as a last resort, and not at the slightest opportunity.


My intervention was a simple report and not a request for additional help, French users (https://forum.avast.com/index.php?topic=221340.msg1473728#msg1473728) were able to solve their problem with Filip Braun's advice (which I translated) , thanks.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: 1776blues on August 26, 2018, 03:24:26 AM
I posted this issue on MWB's forum and then came here. I had this problem after updating Avast on thursday. Currently I have Avast set to not load at startup, so its not on and I have MWB 3's web protection set to off to prevent internet blocking and other window related issues such as the inability to access network diagnosis and event viewer. Another problem I had restarting my PC to finish the update, it hangs, and I have to hit the reset button.

I looked for both files mentioned in this thread and found that along with the updated version the old one is still present.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: stsargent on August 28, 2018, 03:08:21 AM
 :(
I have same prob. (with Internet Security, Paid Ver)
No internet access.  Affects almost all software which access the internet.
WorkAround= Disable BOTH WEB and REALSite components.

The REPAIR* did not help 
(*"To fix the problem please perform a repair: https://support.avast.com/en-eu/article/Repair-Antivirus
Or uninstall and newly re-install your Avast Antivirus." Filip  AVAST)


Reluctant to do complete re-install .. because of the work, risks and time-expense involved.
Any easier ideas.?
Stewart.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: chris.. on August 28, 2018, 07:55:22 AM
As said before , a repair doesn't work for this issue.
So you haven't choise to wait for new version or re-install it.
obviously no need to do a clean install so work and time-expense ??? 5 minutes ? less than the time for you to post
risk ? aren't you paranoid
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Dragon Knight on August 28, 2018, 11:02:04 PM
Is anyone having a similar issue with Google Chrome?

Yes, laptop got stuck completely. I followed the advice on malwarebytesforum and turned off the real site protection. It works...for now.
https://forums.malwarebytes.com/topic/235523-possible-conflict-between-malwarebytes-and-avast/

My Dell Inspiron 6400 continues to stall after initialing the opening of one program.  I think version 18.6.2349 is causing damage beyond Google Chrome.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: 24008943 on August 29, 2018, 04:53:07 PM
My pc Doc found  that the VPN was blocking me getting onto the web !
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: news_reports on August 29, 2018, 11:26:22 PM
Several days have passed since the last substantive replies for this problem.  I have put in all Avast/M'bytes exclusions.  I have uninstalled (clean uninstall) and reinstalled Avast.  These did not work.  I contacted Avast tech support and was strongly urged to spend money for "advanced diagnostics" (shame!).  Are Avast programmers/developers working on this? 
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on August 30, 2018, 12:08:20 AM
Several days have passed since the last substantive replies for this problem.  I have put in all Avast/M'bytes exclusions.  I have uninstalled (clean uninstall) and reinstalled Avast.  These did not work.  I contacted Avast tech support and was strongly urged to spend money for "advanced diagnostics" (shame!).  Are Avast programmers/developers working on this?
Have you tried to totally remove Malwarebytes to see if that clears the problem ???
This would include downloading and running MB-Clean. You can download that tool from
https://forums.malwarebytes.com/topic/196955-malwarebytes-support-tools/
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: stsargent on August 30, 2018, 02:52:11 AM
SUCCESS :)
I did following (using helpful info in earlier posts *)

Downloaded AvastClear.exe and avast_internet_security_setup_offline.exe
Uninstall of Avast Internet Security via Control Panel
Ran AvastClear (went to Safe mode when asked)
Install
Setup
Connected Wifi
Activated ( ie I am using paid version)
Completed setup.

Took a about 60 minutes (mostly: download, reading, checking, documenting,  restorePoint  and other paranoid behavior <grin>)

A BONUS: Behavior shield now can be switched ON (previously I could not get the ON setting to Stay]


-------
Reference the helpful POST by bob3160
"Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A"
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on August 30, 2018, 02:55:17 AM
Good news. Happy to help.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Luan37 on October 23, 2018, 02:37:02 PM
I was using Avast Free Version, but Avast keeps showing pop-up about upgrade to Premium Avast. I did upgrade, paid the money and then lost the Internet connection. Well done from Avast! Keep user stay away from the Internet is the safest way to protect computer
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on October 23, 2018, 03:18:53 PM
I was using Avast Free Version, but Avast keeps showing pop-up about upgrade to Premium Avast. I did upgrade, paid the money and then lost the Internet connection. Well done from Avast! Keep user stay away from the Internet is the safest way to protect computer
Is your Firewall set to Private ???
More help here, https://help.avast.com/en/av_free/12/page_fw_settings.html
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Luan37 on October 23, 2018, 05:27:35 PM
I was using Avast Free Version, but Avast keeps showing pop-up about upgrade to Premium Avast. I did upgrade, paid the money and then lost the Internet connection. Well done from Avast! Keep user stay away from the Internet is the safest way to protect computer
Is your Firewall set to Private ???
More help here, https://help.avast.com/en/av_free/12/page_fw_settings.html
What do you mean?
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Pondus on October 23, 2018, 06:07:36 PM
Quote
  What do you mean?
Firewall network profile. Puplic or private

https://support.avast.com/en-eu/article/Antivirus-Firewall-Application-Rules

https://help.avast.com/en/av_free/12/page_fw_settings.html

Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Luan37 on October 23, 2018, 06:22:54 PM
Quote
  What do you mean?
Firewall network profile. Puplic or private

https://support.avast.com/en-eu/article/Antivirus-Firewall-Application-Rules

https://help.avast.com/en/av_free/12/page_fw_settings.html


Where to find firewall network profile? Also my wireless adapter is hidden.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Pondus on October 23, 2018, 06:27:34 PM
Quote
   Where to find firewall network profile? 
Have no idea, I don't use avast.

Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Luan37 on October 23, 2018, 06:29:08 PM
I will copy important data an reinstall windows. Took my money and took my internet. Bye Avast! Don't have time to fix this shit
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: Pondus on October 23, 2018, 06:40:52 PM
Have you tried repair and reboot?

https://support.avast.com/en-eu/article/Repair-Antivirus


Refund   https://support.avast.com/en-eu/article/Order-Renew-Refund-FAQ

Uninstall  https://support.avast.com/en-eu/article/Uninstall-Antivirus-Utility


Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on October 24, 2018, 01:58:03 AM
I was using Avast Free Version, but Avast keeps showing pop-up about upgrade to Premium Avast. I did upgrade, paid the money and then lost the Internet connection. Well done from Avast! Keep user stay away from the Internet is the safest way to protect computer
Is your Firewall set to Private ???
More help here, https://help.avast.com/en/av_free/12/page_fw_settings.html (https://help.avast.com/en/av_free/12/page_fw_settings.html)
What do you mean?
Did you follow the link that was posted? It gives you instructions. All you need to do is follow them.
Title: Re: Avast Blocking Access to Internet After Update 18.6.2349
Post by: bob3160 on October 24, 2018, 01:58:41 AM
Quote
   Where to find firewall network profile? 
Have no idea, I don't use avast.
That's a heck of an answer.  :(