<![CDATA[Opera cannot access HTTPS sites]]>I have a problem with Opera which started a couple of weeks ago, possibly at the same time as Windows Update 1803. A number of basic pages no longer open (Amazon, Google, Opera forums!) although some others still work perfectly well. All the pages in question work perfectly well in Firefox 62.0.2 (64 bit). The problem seems to me to be related to attempts to load https pages, but this may just be coincidence.

I have done everything suggested on "Instructions on posting about problems in Opera for computers":

Disable all extensions - my only extension is Ad blocker, disabled

Disable the ad-blocker - disabled in Settings

Reset settings to default - done

Reset flags to default - done

Create a clean profile folder/directory - done

Also, VPN is disabled and Windows Defender firewall is off (I use Zone Alarm, Opera Browser has all rights granted).

None of the above made any different to the problem.

I have also uninstalled and re-installed without it making any difference.

Here are the details requested

Windows 10 Home, Version 1803 (OS Build 17134.285) on Lenovo Z70 64 bit Intel i7-5500U 2.40 GHz with 16 GB memory

Opera Version:56.0.3051.31

The following web pages still work in Opera:

http://www.wordreference.com
http://www.rae.es

The following web pages DO NOT work in Opera now, although they did until recently (reason given by Opera shown after page address):

https://www.google.co.uk/advanced_search - This site can’t be reached www.google.co.uk unexpectedly closed the connection.

https://forums.opera.com/topic/23068/instructions-on-posting-about-problems-in-opera-for-computers/3 - This site can’t be reached forums.opera.com took too long to respond.

https://www.amazon.co.uk/?tag=operadesktop14-sd-uk-21 - This site can’t be reached www.amazon.co.uk took too long to respond.

http://hsbc.co.uk - This site can’t be reached www.hsbc.co.uk took too long to respond. (NB. This starts as an http address, but when I request it in Firefox it is an https address that displays when the page is loaded)

https://www.conted.ox.ac.uk - This site can’t be reached www.conted.ox.ac.uk took too long to respond.

]]>https://forums.opera.com/topic/28940/opera-cannot-access-https-sitesRSS for NodeWed, 10 Jun 2026 12:18:24 GMTSun, 30 Sep 2018 17:28:45 GMT60<![CDATA[Reply to Opera cannot access HTTPS sites on Wed, 03 Oct 2018 17:16:20 GMT]]>@batbox50 Interesting. Another user just had issue with Bitdefender messing things up. https://forums.opera.com/post/156115

]]>https://forums.opera.com/post/156213https://forums.opera.com/post/156213Wed, 03 Oct 2018 17:16:20 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Wed, 03 Oct 2018 16:18:48 GMT]]>@batbox50 You are probably wondering why I didn't think of checking Bitdefender before.

Of course, I did check its Notifications to see if it was objecting to any activity - it never showed any warning or information that it had taken action against any threat!

]]>https://forums.opera.com/post/156198https://forums.opera.com/post/156198Wed, 03 Oct 2018 16:18:48 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Wed, 03 Oct 2018 15:14:00 GMT]]>@mixim-0 Smart idea! Not Zone Alarm, though, but Bitdefender. It's the Online Threat Prevention > Encrypted web scan. Now I've turned that off I can access the pages again. I think this must be something new they put into the last release - Bitdefender Antivirus Plus 2019 Build 23.0.10.31 which was updated on my pc 21/09/2018.

Of course, now Bitdefender is maoning at me, but I'll have to take that up with them.

Thanks for all who made suggestions - I've learned a lot about all sorts of things in this, albeit painful, process.

]]>https://forums.opera.com/post/156196https://forums.opera.com/post/156196Wed, 03 Oct 2018 15:14:00 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Wed, 03 Oct 2018 15:03:57 GMT]]>@burnout426 Interesting idea.

Security overview says "This page is not secure" but then shows certificate as valid and all resources being served securely - somewhat contradictory.

]]>https://forums.opera.com/post/156195https://forums.opera.com/post/156195Wed, 03 Oct 2018 15:03:57 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 22:14:55 GMT]]>@batbox50 may it be blocking by Zone Alarm. You should review its settings carefully.

a similar problem here Secure Connection Failed Problem

]]>https://forums.opera.com/post/156144https://forums.opera.com/post/156144Tue, 02 Oct 2018 22:14:55 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 21:17:19 GMT]]>In Opera, goto https://www.google.co.uk/ for example and after it gives you the error page, hit ctrl + shift + i and go to the security tab. Maybe the overview there will reveal the issue.

You could scan your computer with Malwarebytes. You'll probably have to use Firefox to download it though. Maybe something is trying to do a man in the middle on your secure connections.

]]>https://forums.opera.com/post/156123https://forums.opera.com/post/156123Tue, 02 Oct 2018 21:17:19 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 21:04:59 GMT]]>@mixim-0 Yes date, time and zone all correct.

]]>https://forums.opera.com/post/156121https://forums.opera.com/post/156121Tue, 02 Oct 2018 21:04:59 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 16:59:03 GMT]]>@batbox50 is your pc date/time correct? TLS errors can be if old date is set

]]>https://forums.opera.com/post/156110https://forums.opera.com/post/156110Tue, 02 Oct 2018 16:59:03 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 11:52:37 GMT]]>@batbox50 BTW, my Internet Options include TLS 1.0 - 1.2 inclusive.

]]>https://forums.opera.com/post/156094https://forums.opera.com/post/156094Tue, 02 Oct 2018 11:52:37 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 11:41:42 GMT]]>@burnout426 Thankyou for your detailed suggestions. Results follow:

Internet Explorer

http://www.rae.es - Displays successfully

https://www.google.co.uk - Can’t reach this page, Make sure the web address https://www.google.co.uk is correct

https://www.amazon.co.uk - Can’t reach this page, Make sure the web address https://www.amazon.co.uk is correct

Edge

http://www.rae.es - Displays successfully

https://www.google.co.uk - Can’t connect securely to this page
This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening, try contacting the website’s owner.

https://www.amazon.co.uk - Can’t connect securely to this page
This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening, try contacting the website’s owner.

Removed from ZoneAlarm, but it puts it back automatically when Opera is restarted, without asking me. Getting it from a cache of previously recognised programs perhaps? I am sure that I have successfully removed it before retrying, as there were many entries removed and only the current one comes back.

Only Firewall is active in ZoneAlarm.

Date etc. settings all correct.

No proxy, auto detect off.

IP4 & 6 both "obtain automatically" for IP and DNS

No active entries in /etc/hosts file.

]]>https://forums.opera.com/post/156092https://forums.opera.com/post/156092Tue, 02 Oct 2018 11:41:42 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 03:56:48 GMT]]>Chrome and Opera use the system's network stack. So, it's probably an issue with a setting in Windows. Firefox uses its own network stack, so that could explain why it doesn't affect Firefox.

Did you try in Edge and IE to see if they behave the same way?

What if you remove Opera and others from Zone Alarm, try to connect to the net with them so that Zone Alarm prompts you again where you choose to add them back?

It's been years since I used Zone Alarm, but if it has any type of features (besides the main firewall part) that scan web pages, turn those features off to see if it makes a difference.

Are the Date, Time, Time Zone and Daylight Savings settings correct?

In "internet options" in Windows settings, on the "connection" tab, click "LAN settings". Make sure no proxy is selected. Turn of automatic detection too.

In Windows under "Settings -> Network and Internet -> the connection type you're using -> change adapter options", right-click on the adapter you're using and goto "properties". Check the IP4 and 6 properties to make sure "obtain automatically" is set for both IP address and DNS.

Open "C:\Windows\System32\drivers\etc\hosts" in a text editor. What's it look like? Normally all lines will be commented out by #. There shouldn't be any active entries in there unless Zone Alarm or something added them.

]]>https://forums.opera.com/post/156066https://forums.opera.com/post/156066Tue, 02 Oct 2018 03:56:48 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Tue, 02 Oct 2018 03:05:17 GMT]]>@mixim-0

Opera Beta - same results
Opera Developer - same results

]]>https://forums.opera.com/post/156060https://forums.opera.com/post/156060Tue, 02 Oct 2018 03:05:17 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Mon, 01 Oct 2018 20:06:55 GMT]]>@batbox50 Did you test the Opera Developper? httpss worked smoothly for me.

]]>https://forums.opera.com/post/156032https://forums.opera.com/post/156032Mon, 01 Oct 2018 20:06:55 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Mon, 01 Oct 2018 11:26:24 GMT]]>@mixim-0 Thanks for your interest.

I'm just a home user with a phone line connection, so nothing fancy provided by ISP. Indeed, according to their forum they don't even provide static IPs.

Also the VPN is off and always has been.

]]>https://forums.opera.com/post/156006https://forums.opera.com/post/156006Mon, 01 Oct 2018 11:26:24 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Mon, 01 Oct 2018 04:46:06 GMT]]>@mixim-0 said in Opera cannot access HTTPS sites:

@batbox50 hi. im not speaking nice english, sorry at first. I had encountered a similar problem.

Opera Developer version running smoothly, but Opera sometimes is giving error for https pages.

I wonder something. Do you use the static ip service from ISP?

and also this problem is related Opera's vpn service

]]>https://forums.opera.com/post/155985https://forums.opera.com/post/155985Mon, 01 Oct 2018 04:46:06 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Mon, 01 Oct 2018 04:43:15 GMT]]>@batbox50 hi. im not speaking nice english, sorry at first. I had encountered a similar problem.

Opera Developer version running smoothly, but Opera sometimes is giving error for https pages.

I wonder something. Do you use the static ip service from ISP?

]]>https://forums.opera.com/post/155984https://forums.opera.com/post/155984Mon, 01 Oct 2018 04:43:15 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Mon, 01 Oct 2018 03:21:47 GMT]]>@leocg Chrome (mis)behaves exactly the same way as Opera, i.e. http pages load, https do not and with the same reasons given.

]]>https://forums.opera.com/post/155981https://forums.opera.com/post/155981Mon, 01 Oct 2018 03:21:47 GMT<![CDATA[Reply to Opera cannot access HTTPS sites on Sun, 30 Sep 2018 18:57:03 GMT]]>All pages opened fine here.

Those pages open in Chrome or other Chromium based browsers?

]]>https://forums.opera.com/post/155957https://forums.opera.com/post/155957Sun, 30 Sep 2018 18:57:03 GMT