Suddenly no longer able access some websites?

  • Hello everyone, a bit of a puzzle for you...

    Suddenly (over the last few weeks) I find I am no longer able to access some websites which I previously had no problem accessing. One site I try to access just comes up as a blank page, another has the following message-

    'This webpage is not available
    A secure connection cannot be established because this site uses an unsupported protocol.'

    I'm stumped as I know the websites are still active, any ideas? I haven't knowingly changed any of my settings as far as I'm aware...

    Best regards, Bob

  • Version of Opera?

  • Opera 35.0, and if it's also of any use or relevance, my OS is Windows XP SP3 32 bit.

    -Bob

  • The message you've quoted shows a failed attempt to establish a secure connection to an https website server. Establishing such a connection requires your computer/browser to have a current copy of the site's certificate in a storage area, the correct communications protocols, and the correct encryption mechanisms (the last two having to be as specified on the site's certificate). Any failure of the cert, the protocol availabilities, or the encryption availabilities will block communications and result in an error message like you received. Such failure can occur because of problems with the browser, the computer, or along the direct communications path from your computer to the website server.

    The latter path cause includes anything that might interpose between your computer and the site, such as use of a proxy (including Opera Turbo or certain antivirus protection mechanisms), something the ISP is doing along the connection path, or because of something interjecting itself maliciously as a middleman.

    Most often, it's the browser's use of a proxy or the hidden use of a proxy mechanism by an installed antivirus program on the computer. To securely communicate with a website, your browser essentially compares its stored site cert's keys with the ones presented by the website; if they don't match, the connection is rejected. With a proxy inserted in the communications pathway, its theoretically possible for a proxy to tunnel the browser request through to the site and back again so that certs and keys can be compared successfully - but this isn't always gracefully accomplished.

    In short, https communication attempts through a proxy often present a failure message, and the ever-changing universe of site certs, browser design, OS design, proxy settings/operations, and a number of other things all contribute to a potential blockage of communications "out of the blue".

    Likewise, it's possible that a formerly-good site cert has been revoked, reissued, or has expired (they do have expiration dates on them). And because certifying agencies approve multiple sites' certs, it's also possible that several site certs could expire/be-revoked/be-reissued at around the same time... though this is not that likely.

    First, check to make sure you've not enabled Opera Turbo accidentally or set up for some other proxy usage. Then check to make sure something in your AV has not been enabled to "protect" you from Internet threats - that might include the AV passing all the browser traffic through its own 'invisible' proxy. Finally, post here a couple of URLs that are causing you problems so that others can try them.

  • This is one of the websites I can no longer access, it's a Japanese site for uploading images of civilian and military aircraft- http://appdc.orz.hm/up/index/1

    -Bob

  • And this is message I get when I try to access it...

    'This webpage is not available

    Opera's connection attempt to appdc.orz.hm was rejected. The website may be down, or your network may not be properly configured.
    Check your internet connection.

    Check any cables and reboot any routers, modems, or other network devices you may be using.
    Allow Opera to access the network in your firewall or antivirus settings.

    If it is already listed as a program allowed to access the network, try removing it from the list and adding it again.
    If you use a proxy server...

    Check your proxy settings or contact your network administrator to make sure the proxy server is working. If you don't believe you should be using a proxy server: Go to the Opera menu > Settings > Change proxy settings... > LAN Settings and deselect "Use a proxy server for your LAN".'

    -Bob

  • The latest site you linked shows same message here, on Opera dev / W10.

    But for sites, giving you 'unsupported protocol' message, this can be problem with site certificate - few sites use free EC (elliptic curve based) certificates, which can not be checked using windows XP internal crypto libraries. For these sites, Firefox based browsers (which use internal crypto) are the only way on XP - all other browsers (IE, Chrome, Opera and derivatives) use windows crypto library. Well, old Opera (up to 12) may sometimes work too, if such sites allow fallback without encrypting connections, but this is not reliable way.

    You have to check with other browsers (Chrome, IE, Firefox) - this helps to pinpoint specific issues.

  • This is one of the websites I can no longer access, it's a Japanese site for uploading images of civilian and military aircraft- http://appdc.orz.hm/up/index/1

    I've tried with Opera, Firefox and Chrome and none was able to load that page.

  • This is one of the websites I can no longer access, it's a Japanese site for uploading images of civilian and military aircraft- http://appdc.orz.hm/up/index/1
    -Bob

    The site also fails in Firefox, Qupzilla, Opera 12.18, and Vivaldi. All error messages indicate the connection was refused, in Qupzilla's case indicating "the server is refusing the connection', which may or may not refer to the appdc.orz.hm server itself. Whatever is going on with the site, it's not related to your browser or cert store per se. It's possible the server is blocking incoming traffic or experiencing DDOS attacks... it's hard to say.

    Do you have another site that is causing you similar problems?

  • One of the sites I used to be able to see on opera works fine on firefox, the other site I can no longer access is adult orientated so I don't want to put the URL here in case any minors see it. The one I really miss is the Japanese aviation site though, I wonder if it's anything to with the ISP?

    -Bob

  • There's something wrong with the URL: http://appdc.orz.hm/up/index/1

    In attempting to get a 'who-is' for the URL, it comes up as an unrecognizable domain name, which means a browser DNS lookup attempting to convert it to an IP number to complete the connection will fail... hence the connection attempt will fail. Are you sure the URL you provided is completely accurate?

    From the wiki: ".hm is an Internet country code top-level domain (ccTLD). Ostensibly, the domain is reserved for the Heard and McDonald Islands, uninhabited islands in the southern Indian Ocean that are under the sovereign control of Australia; Australia instead uses an .aq domain for its sites related to Heard and McDonald Islands."

  • The URL is exactly as I have it bookmarked, nothing there has changed. I'm at a loss how to explain it, it was working fine and I had no problem accessing the website until a few weeks ago...

    -Bob

  • It appears there is a fee-based .hm domain registry operating out of Colorado, USA (at least their phones/FAX are there), meaning that people can register a website having a .hm end-code. As it turns out, the orz.hm domain is owned by Agora Inc, and hosted by K-Opticom Corporation. As of February 2016, orz.hm received 96% of its traffic from within Japan. The orz.hm domain owner then sub-leases various website names (eg: appdc.orz.hm, minecraft9.orz.hm, g2labo.orz.hm, etc) to interested parties. The g2labo.orz site connects, the minecraft9 site fails connecting (the gamesite was banned by Microsoft), and the appdc site connection problems you already know about.

    Given the mixed results, the impression I get is that the appdc site/server is down, there is a DNS lookup contamination issue for the URL, the site is being DDOS'd, or either the domain-owning company or the site-owning company is having problems of their own. The only search-engine results I can turn up for the URL you provide are a handful of Japanese-language posts and a number of photo-images on other sites linking the photo-related URL's back to your URL - and some of those pictures are definitely off-topic for an aircraft-photo website. That indicates some spamming/misuse-of-site issues that were occurring for the URL's owner(s).

  • Blackbird, you must be an IT consultant for the NSA - you know too much. ;)

  • Blackbird, you must be an IT consultant for the NSA - you know too much.

    That's the first time I've ever been accused of knowing too much!

  • I am using opera browser in my mobile phone. but I can't view you tube videos. when I try to play videos on my browser, then an error occur, it will say " not available vnd software".
    so,
    how to rectify this bug?
    how to view videos? in my mobile........

  • I am using opera browser in my mobile phone. but I can't view you tube videos. when I try to play videos on my browser, then an error occur, it will say " not available vnd software".
    so,
    how to rectify this bug?
    how to view videos? in my mobile........

    This forum is for desktop Opera for Windows. Please post your question in Opera for Android or Opera Mini forums, depending on your mobile version of Opera.

  • UPDATE
    After noticing that Opera had updated to the latest version, out of curiosity I decided to try one of the websites that I had no longer been able to access, BINGO!, it worked! I could now access the website again. Cue several hours later when I tried again, back to normal with a blank screen and no access! This is now officially infuriating, because if nothing else it proves that the website is still active, just that I can't access it again, what could possibly have happened in those few short hours between being able to access it again and then suddenly unable to once more?

    -Daz

    p.s. I'm a little reticent about posting the name of the website because of it's adult content.

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