Author Topic: iCloud Login Blocked by Avast in High Sierra  (Read 5096 times)

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Offline mcsween

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iCloud Login Blocked by Avast in High Sierra
« on: October 03, 2017, 06:16:18 PM »
When Avast's Web Shield is activated, I cannot login to iCloud with Safari with the error "There was an error connecting to the Apple ID server."

As soon as I disable the Web Shield, I can log in.
« Last Edit: October 03, 2017, 06:20:34 PM by mcsween »

Offline .: Mac :.

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #1 on: October 03, 2017, 09:33:43 PM »
Are you saying that going to iCloud.com services is blocked? Or logging in somewhere in system preferences?

I verified the ability to login in MacOS 10.11 and MacOS 10.12 in Safari with Web Shield running and did not get the error.

Can you give us your MacOS and Safari Version? Click Apple then About this Mac to get the MacOS Version, and in Safari click Safari and then About Safari.
"People who are really serious about software should make their own hardware." - Alan Kay

Offline mcsween

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #2 on: October 04, 2017, 12:24:13 AM »
Safari is 11.0 build 13604.1.38.1.6 and MacOS is 10.13.  With web shield enabled, I get the following message:

Connection Error - iCloud encountered an error while trying to connect to server.
« Last Edit: October 04, 2017, 12:33:03 AM by mcsween »

Offline lukas.hasik

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #3 on: October 05, 2017, 02:47:06 PM »
just to be sure - Avast Security 12.9, right?

Safari is 11.0 build 13604.1.38.1.6 and MacOS is 10.13.  With web shield enabled, I get the following message:

Connection Error - iCloud encountered an error while trying to connect to server.
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Offline peru68

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #4 on: October 05, 2017, 08:27:09 PM »
I have the same problem and I have avast 12.9 with macOS 10.13

Offline mcsween

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #5 on: October 06, 2017, 04:49:21 AM »
Yes Avast 12.9.  I also uninstalled and reinstalled but have the same problem

Offline ondrej.kolacek

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #6 on: October 13, 2017, 05:00:46 PM »
This will be fixed in the next version of Avast. A current workaround is to disable the web shield while accessing icloud.com.
« Last Edit: October 13, 2017, 05:02:22 PM by ondrej.kolacek »

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #7 on: October 13, 2017, 11:27:56 PM »
Thanks for the update Ondrej!
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Offline lukas.hasik

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[FIXED] Re: iCloud Login Blocked by Avast in High Sierra
« Reply #8 on: December 08, 2017, 09:07:58 AM »
just for record - fixed in release 13.0. If you are with older release go to - Preferences > Updates > and click the 2nd Update Now button (Program)
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Offline ondrej.kolacek

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #9 on: December 13, 2017, 09:52:02 AM »
Hello,
unfortunately the newest iteration of HighSierra broke our fix of this issue yet again.

If it is happening to you, please run the terminal app and in it run the two following commands:

sudo sh -c "echo '*.icloud.com https' >> /Library/Application\ Support/Avast/config/com.avast.proxy.excl"
sudo killall -hup com.avast.proxy

Please note that it will prompt you for a password. After that, restart Safari and all should be fine.

This should help until we manage to get a fix out.
Kind regards,
Ondrej Kolacek

Offline PoCoMotion

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #10 on: December 16, 2017, 11:29:10 PM »
the workaround while keeping Avast active using Safari:
1. click on support when you get the error
2. select your country
3. select to login to iCloud on the web

Other workaround - use Firefox.

Offline lukas.hasik

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #11 on: December 20, 2017, 04:39:15 PM »
this issue should be fixed with the recent 13.4 release. Click Preferences > Updates > Program : Update Now to force the update manually.
Quality is also a feature.

Offline Tech34

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #12 on: March 13, 2018, 04:05:55 PM »
Having the same issue but with Avast for Business version 13.5. Currently running High Sierra 10.13.3. Issue only occurs with the Safari browser when trying to access iCloud.com. As soon as the Web Shield is disabled it works just fine. Any ETA when this will be fixed?

Offline ondrej.kolacek

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #13 on: March 16, 2018, 05:04:10 PM »
Having the same issue but with Avast for Business version 13.5. Currently running High Sierra 10.13.3. Issue only occurs with the Safari browser when trying to access iCloud.com. As soon as the Web Shield is disabled it works just fine. Any ETA when this will be fixed?
Hello,
it should not happen in that configuration. Please can you check
-that in Avast GUI, Preferences, WebShield settings, in excluded servers list, there is *.icloud.com exclusion for https
-that when you browse icloud.com, in the navigation bar, when you click on icon of lock, click Show Certificates, in the list of certificates there is no "Avast trusted CA" certificate in the list?
Kind regards,
Ondrej Kolacek

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Re: iCloud Login Blocked by Avast in High Sierra
« Reply #14 on: March 17, 2018, 04:11:14 PM »
Ondrej,

What is the root issue here? Is this something apple is doing detecting the man in th emiddle nature of the web shield proxy?
"People who are really serious about software should make their own hardware." - Alan Kay