Avast is blocking connection to secure websocket

system · 2015-07-29T07:35:03.000Z

Just installed v. 10.3.2223 Free Antivirus

I have now the problem, that I can not see some pages that require a secured websocket connection using CORS.
This page https://chess24.com/en/watch/live-tournaments uses socket.io 0.9.17 to load most of its dynamic content, but the websocket connection is not established properly.

If I exlude chess24.com from the web protection it is working.

I have this problems in chrome (Version 44.0.2403.107 m), Firefox (38.0.5) and Internet Explorer (11.0.9600)
Using Windows 7 x64 Professional.

IMO this is a bug and I would like to know how I can avoid running into this problem, without excluding all pages with a similar problem or even deactivating the entire web protection.

Thanks in advance

Asyn · 2015-07-29T07:38:03.000Z

Update to the latest version (10.3.2225): https://forum.avast.com/index.php?topic=173591.0

system · 2015-07-29T07:45:48.000Z

I’m now on 10.3.2225 and the problem still exists.

Asyn · 2015-07-29T07:47:53.000Z

Which Avast…? (Free/Pro/IS/Premier)
OS…? (32/64 Bit…? - which SP…?)
Other security related software installed…?
Which AV(s) did you use before Avast…?

system · 2015-07-29T07:50:57.000Z

Free Antivirus 2015
Windows 7 Professional SP1 x64 + all windows updates
Didn’t had any AV earlier, and deactivated security essentials real time protection immediately after installing avast

Asyn · 2015-07-29T07:53:11.000Z

lord2k post:5:

…and deactivated security essentials real time protection immediately after installing avast

First, be sure to get rid of all remnants of your prior installed AV(s)…!!
→ https://www.avast.com/faq.php?article=AVKB11#artTitle

Then:

Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup.exe
Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions…!!)
Reinstall Avast with the downloaded installer from point 1.
Reboot.

system · 2015-07-29T08:02:20.000Z

Followed your instructions, but the problem persists.

To check I just went to https://chess24.com/en/watch/live-tournaments and the loader stays forever. Deactivating the web protection and it is working fine.

Asyn · 2015-07-29T08:04:18.000Z

OK, does it work if you disable HTTPS-Scanning…?

system · 2015-07-29T08:07:59.000Z

Yes, then the link is working…

I heard already from other users that they had this problems since ~1 week when using avast and want to browse chess24.com.

Asyn · 2015-07-29T08:10:37.000Z

OK, wait for one of the devs, this might be a bug.

system · 2015-08-03T18:42:18.000Z

Any news on this issue ?
This seems to be a very big problem on our website.

Asyn · 2015-08-04T05:04:12.000Z

jon70 post:11:

Any news on this issue ?
This seems to be a very big problem on our website.

No, but you can submit a ticket: https://support.avast.com/Tickets/Submit

MartinZ · 2015-08-04T13:55:29.000Z

jon70 post:11:

Any news on this issue ?
This seems to be a very big problem on our website.

Hi,

you are the owner of https://chess24.com/en/watch/live-tournaments ?

We should fix this soon.

Martin

system · 2015-08-06T10:10:42.000Z

Just to let you know our users have exactly the same issues on our sites using websockets, including www.ludicash.com .

system · 2015-08-10T11:31:24.000Z

we have the same problem at www.sharelatex.com

avast don’t seem to be fixing the issue.

MartinZ · 2015-08-10T12:42:07.000Z

Hi gyus,

we are aware of the issue and working on the fix. It will be released in next few days.

system · 2015-08-23T12:45:43.000Z

Still now news ?
Will be forced to tell our customers to uninstall avast to use our website ? This seems a little extreme but we do not have much choice

bob3160 · 2015-08-23T13:41:15.000Z

jon70 post:17:

Still now news ?
Will be forced to tell our customers to uninstall avast to use our website ? This seems a little extreme but we do not have much choice

Until the fix is available simply disable HTTPS scanning in the Avast settings:

http://www.screencast-o-matic.com/screenshots/u/Lh/1437840647533-69944.png

system · 2015-08-26T07:16:13.000Z

bob3160 post:18:

Until the fix is available simply disable HTTPS scanning in the Avast settings:

http://www.screencast-o-matic.com/screenshots/u/Lh/1437840647533-69944.png

This solution doesn’t work. Avast is also blocking non-secure websockets.
You need to disable the entire webschield to fix it.

bob3160 · 2015-08-26T12:06:29.000Z

vijay15 post:19:

bob3160 post:18:

Until the fix is available simply disable HTTPS scanning in the Avast settings:

http://www.screencast-o-matic.com/screenshots/u/Lh/1437840647533-69944.png

This solution doesn’t work. Avast is also blocking non-secure websockets.
You need to disable the entire webschield to fix it.

Disabling Webshield isn’t a fix. Doing so puts your system at risk.
Maybe you need to start your own topic and describe your problem in detail so you can get some help.

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