Avast WEBforum

Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: REDACTED on March 30, 2015, 01:26:46 PM

Title: "the add-on could not be downloaded because of a connection failure"
Post by: REDACTED on March 30, 2015, 01:26:46 PM

Hi, when trying to download HTTPS Everywhere, any stable version (all I tested it on), I received the following notification from my Firefox Browser:
"the add-on could not be downloaded because of a connection failure"

I disabled all Avast shields for 10 minutes, and then the download worked.

What is the cause of this problem, and what is the solution, besides disabling shields temporarily?

Thanks.

Edit: I have Windows Firewall, running Windows 7, in case that is of importance in regards to this question.

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: Asyn on March 30, 2015, 01:51:33 PM

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

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: REDACTED on March 30, 2015, 05:10:13 PM

1) Which Avast..? (Free/Pro/IS/Premier)
2) Which version..?
3) OS..? (32/64 Bit..? - which SP..?)
4) Other security related software installed..?
5) Which AV(s) did you use before Avast..?

1) Free
2) 2015.10.2.2214
3) Windows 7; 64 bit; SP1
4) Windows Firewall
5) None

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: Eddy on March 30, 2015, 05:18:01 PM

Perform a clean installation of the latest avast version and see if the problem still is there:
https://forum.avast.com/index.php?topic=168680.msg1199245#msg1199245

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: REDACTED on March 30, 2015, 11:57:51 PM

I did the reinstall and the problem is still there.

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: Asyn on March 31, 2015, 06:34:11 AM

Disable HTTPS-scanning in the web shield. Does it work now..?

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: REDACTED on March 31, 2015, 11:16:52 AM

Yes, disabling HTTPS scanning in, 'settings -> active protection -> web-shield -> customisation', fixed the problem, thank you Asyn.

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: Asyn on March 31, 2015, 11:22:30 AM

You're welcome.

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: bob3160 on March 31, 2015, 01:49:09 PM

In my eyes, this isn't a fix but a bypass. I've reported this to the Moderates and hope we'll get an answer as to when the problem will be fixed.

Title: Re: "the add-on could not be downloaded because of a connection failure"
Post by: Asyn on April 01, 2015, 06:42:07 AM

Quote from: bob3160 on March 31, 2015, 01:49:09 PM

In my eyes, this isn't a fix but a bypass.

Yes, it's a workaround.