1 Star2 Stars3 Stars4 Stars5 Stars (7 votes, average: 4.43 out of 5)

If you’re a website owner, the browser throwing an SSL certificate error message such as “ERR_SSL_VERSION_OR_CIPHER_MISMATCH” [CC1] does not help your business. It also doesn’t help to boost the confidence of your end-users, especially in the current cyber landscape.


When a user receives this error message while trying to access your site, it means that your server and the visitor’s browser (client) are unable to establish a secure, encrypted connection due to an unsupported protocol. There are a few potential causes for this, but it’s typically because your SSL certificate is misconfigured.

The mantra that most security gurus are trying to drill into the collective consciousness of netizens is that “secure” doesn’t mean “safe.” The word on the street is that more than half of the super tech-savvy cybercriminals have already switched to HTTPS, and the green padlock with secure written all over it could be extremely misleading. The padlock merely denotes that the communication channel between your client’s browser and your web server will be encrypted. Whether the server is legit, or you’re being coaxed into heading over to a phishing website is something that can’t be determined with a green padlock (unless the web server has an EV SSL certificate) — hence, you might not be safe at all.  

With the average internet user already at the edge of their seat due to increasing data breaches and cyber security threats, it is not a glorious moment when they visit your site and encounter an SSL error message. It’s of the utmost importance to fix these errors to avoid any adverse impact on business and to retain your customer’s trust.

Let’s discuss some of the scenarios which can cause the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error and look at ways to fix it.

Sectigo EV SSL Certificates from $79.84/year!

Get the lowest prices on trusted SSL certificates from Sectigo.

Shop for Sectigo SSL Certificates


While this error is more commonly seen on older browsers or operating systems, that isn’t always the case — and the SSL certificate could also be responsible for it.


Other variations of the same error message include Error 113 and unsupported protocol errors as show in the images below:

  • Run an SSL Certificate Check

The first step is to perform an SSL check on the certificate installed on the web server. You can use the free SSL Checker from Qualys SSL Labs, enter the hostname, and hit submit.

  • See If There is a Certificate Name Mismatch

On the Qualys SSL Checker, this message will show up if the tool can recover a certificate for the site but if the domain names listed on the certificate do not match your queried domain. According to the Qualys report, a mismatch could happen due to any of the following scenarios:

  • The site shares an IP address with some other site that uses SSL.
  • The website no longer exists.
  • The domain points to the old IP address which hosts some other site.
  • The site uses a content delivery network (CDN) that doesn’t support SSL.
  • The domain name alias was not included in the certificate.

You can also view the certificate information to see if it matches with the current site you’re on.

  • Determine Whether the Site Is Running an Old Version of TLS

Ideally, the TLS version on the webserver should be 1.2 or higher (preferably TLS 1.3). On the Qualys SSL Checker tool under the configuration tab, you can see the current version of TLS running on the server. For older versions, you can reach out to the host and ask them to update their TLS version.

  • Consider the Cause May Be an Outdated OS

The latest SSL certificates are not compatible with old operating systems (OS). Browsers also withdraw support for newer technologies on old operating systems. For instance, Chrome withdrew support for Windows XP in 2015.

  • See If the Site is Running an Outdated RC4 Cipher Suite

The current cipher suite can be seen on the Qualys SSL Checker tool. Ensure that the server configuration is enabled with a different cipher suite than RC4. Not only is RC4 not pseudo-random in the generation of the keystream and has keystream biases but also the key scheduling algorithm is extremely weak.

Chrome removed support for RC4 Cipher Suites from version 48 and upwards. Google and Mozilla’s deprecation of RC4 cipher suite is the leading cause of this error. In the case of large enterprise deployments that use RC4, they might be resistant to change their configurations since it takes longer to process and implement changes in a complex environment.

  • Users Can Clear Their SSL State

Similar to clearing browser cache, clearing the SSL state takes care of any synchronization issues. On Chrome:

  • Open Proxy Settings.
  • In the Internet Properties window, go to the Content tab and click on Clear SSL State.
  • Click OK and restart your browser.
Internet Properties Options
  • Temporarily Disable Your Antivirus

Some antiviruses get their certificates in the mix and create confusion by adding a layer between the browser and the server. If none of the above-mentioned fixes work, as a last resort, users can try disabling the antivirus temporarily. This can sometimes fix the issue. However, we don’t recommend this action because it leaves you vulnerable to cyberattacks. If you choose to perform this step, proceed with caution.

  • Check Whether the Website Is Available Over HTTP

Try to reach the website over HTTP instead of using HTTPS. If you don’t receive the same error, the issue needs to be fixed at the server end.

  • Enable All SSL/TLS Versions
    • On Chrome, open Settings and search for proxy settings in the search field.
    • Open Proxy Settings and in the Internet Properties window click on the Advanced tab.
    • Enable all the versions of SSL/TLS.
Internet Properties Settings
  • Disable QUIC

On the Chrome browser, go to chrome://flags, and search for “experimental QUIC protocol” in the search field. If enabled, disable this setting and restart the browser. Firefox does not yet support QUIC.

We hope one of the above fixes worked wonders for you, and you can now access the website without any pesky error messages ruining your browsing experience.

Encryption Resources

What Is an S/MIME Certificate and How Does It Work?

Troubleshooting Guide

3,670 thoughts on “How to Fix ’ERR_SSL_VERSION_OR_CIPHER_MISMATCH’

  1. purchase cialis online cheap says:

    cialis uk patent

  2. I was suggested this blog by my cousin. I am not
    sure whether this post is written by him as no one else
    know such detailed about my problem. You are amazing! Thanks!

    My page: but web hosting

  3. Hi there, this weekend is fastidious in support of me,
    for the reason that this occasion i am reading this wonderful
    educational article here at my house.

    my webpage; joker gaming

  4. This is a very good tip especially to those new to the blogosphere.
    Brief quest bars but;,
    very precise info… Appreciate your sharing this one.
    A must read article!

  5. Solitaire is a fun card game to enjoy at all ages. Create stacks of cards on the solitaire board by stacking cards downward alternating color. Click through the stock cards to add extra cards to the solitaire game. The ultimate goal of Klondike Solitaire is to add all the cards into their foundations in the top right based on suit from Ace to King. The Escape Game goes virtual with this two-volume series of heist games, which you can choose to do individually, or together as a pack! In this series, you and your team work as secret agents as you try to uncover the true identity of an infamous art curator and suspected art thief. Work with the help of an Intelligence Agent as you follow your suspect into the world of stolen art all the way to the Silk Road.

  6. villa for sale antalya says:

    I am extremely impressed with your writing skills as well as with the layout on your weblog. Is this a paid theme or did you customize it yourself? Anyway keep up the nice quality writing, it is rare to see a nice blog like this one nowadays..

  7. buy apartment in ankara turkey says:

    Everything is very open and very clear explanation of issues. was truly information. Your website is very useful. Thanks for sharing.

  8. Hey! I could have sworn I’ve been to this site before but after checking through some of quest bars the ( post I realized
    it’s new to me. Anyhow, I’m definitely happy I found it and
    I’ll be book-marking and checking back often!

  9. Hi there, just wanted to mention, I loved this post.
    It was helpful. Keep on posting!

    Feel free to surf to my webpage :: their scoliosis surgery

  10. Johnathan says:

    I’m extremely inspired with your writing abilities as well
    as with the format to your blog. Is that this a asmr paid
    subject or did you customize it your self?
    Anyway stay up the nice high quality writing, it’s rare to peer a great
    weblog like this one today..

  11. says:

    Hey very nice blog!! Man .. Excellent .. Amazing .. I will bookmark your website and take the feeds also…I am happy to find so many useful info here in the post, we need develop more strategies in this regard, thanks for sharing. . . . . .

  12. Ahaa, its nice conversation on the topic of this paragraph here at this weblog, I
    have read all that, so now me also commenting at this place.


  13. It’s genuinely very complicated in this active life to listen news
    on TV, so I simply use internet for that reason, and obtain the most recent
    information. slot Pp ทางเข้า

  14. Heya fantastic blog! Does running a blog similar to this take a lot of work?
    I’ve no knowledge of coding but I had been hoping to start my
    own blog in the near future. Anyhow, if you have any recommendations
    or tips for new blog owners please share. I understand this is off subject but
    I just wanted to ask. Thanks! สล็อต

  15. Twitterいいね激安 says:

    Great – I should definitely pronounce, impressed with your web site. I had no trouble navigating through all the tabs and related information ended up being truly easy to do to access. I recently found what I hoped for before you know it in the least. Quite unusual. Is likely to appreciate it for those who add forums or something, website theme . a tones way for your client to communicate. Nice task.

  16. インスタグラムいいね購入 says:

    The subsequent time I read a blog, I hope that it doesnt disappoint me as a lot as this one. I mean, I do know it was my option to learn, however I really thought youd have something attention-grabbing to say. All I hear is a bunch of whining about something that you might repair if you happen to werent too busy on the lookout for attention.

  17. I used to be able to find good advice from your blog posts.

    My web blog – asmr there –,

  18. Hi, this weekend is fastidious in favor of me, as this moment i am reading this wonderful informative paragraph here at my residence.

  19. Pingback: ivermect
  20. hello!,I really like your writing so much! percentage we
    keep in touch extra about your article on AOL?
    I need an expert in this house to solve my problem. May
    be that is you! Taking a look ahead to look you.

    Feel free to visit my web page; asmr where

  21. 홀덤사이트 says:

    This is a very good tips especially to those new to blogosphere, brief and accurate information… Thanks for sharing this one. A must read article.

  22. 온라인홀덤 says:

    Definitely believe that which you said. Your favorite justification seemed to be on the web the simplest thing to be aware of. I say to you, I definitely get annoyed while people think about worries that they just don’t know about. You managed to hit the nail upon the top and also defined out the whole thing without having side effect , people could take a signal. Will probably be back to get more. Thanks

  23. tvexpress combo 8 says:

    Wonderful web site. A lot of helpful information here. I¦m sending it to a few buddies ans also sharing in delicious. And certainly, thank you on your effort!

  24. 카지노사이트 says:

    naturally like your website but you have to test the spelling on several of your posts. A number of them are rife with spelling problems and I in finding it very bothersome to tell the reality however I?¦ll certainly come again again.

  25. Nice blog here! Also your site loads up very
    fast! What web host are you using? Can I
    get your affiliate link to your host? I wish my website loaded up as fast
    as yours lol

    My webpage; for asmr (

  26. winlive4d says:

    Hi there! This post couldn’t be written any better! Reading through this post reminds me of my previous room mate! He always kept talking about this. I will forward this article to him. Pretty sure he will have a good read. Thank you for sharing!

  27. Narangala Mountain says:

    I keep listening to the news broadcast speak about getting free online grant applications so I have been looking around for the most excellent site to get one. Could you tell me please, where could i get some?

  28. I don’t even know the way I stopped up here, however
    I thought this publish was good. I don’t recognize who you are however definitely you’re going to a
    well-known blogger if you happen to aren’t already.


    Here is my webpage … scoliosis surgery or

  29. penis size by country says:

    Nice post. I learn something more challenging on different blogs everyday. It will always be stimulating to read content from other writers and practice a little something from their store. I’d prefer to use some with the content on my blog whether you don’t mind. Natually I’ll give you a link on your web blog. Thanks for sharing.

  30. สมัครแทงบอล says:

    My developer is trying to convince me to move to .net from PHP. I have always disliked the idea because of the costs. But he’s tryiong none the less. I’ve been using Movable-type on a variety of websites for about a year and am concerned about switching to another platform. I have heard good things about Is there a way I can import all my wordpress posts into it? Any kind of help would be really appreciated!

  31. satta matka says:

    Heya i am for the first time here. I came across this board and I find It truly useful & it helped me out much. I hope to give something back and help others like you aided me.

  32. Why people still make use of to read news papers when in this technological world everything is available on net?

  33. slotxo thai says:

    Excellent read, I just passed this onto a friend who was doing a little research on that. And he actually bought me lunch since I found it for him smile So let me rephrase that: Thanks for lunch!

  34. インスタグラムいいね増やす says:

    Fantastic items from you, man. I have take note your stuff previous to and you are just too great. I actually like what you’ve got right here, really like what you are stating and the way in which by which you assert it. You’re making it entertaining and you continue to care for to stay it smart. I can not wait to read much more from you. That is actually a wonderful website.

  35. queenslot pgslot says:

    You actually make it seem really easy with your presentation but I in finding this topic to be actually one thing that I feel I would by no means understand. It sort of feels too complicated and extremely large for me. I’m looking forward for your subsequent submit, I¦ll attempt to get the cling of it!

  36. สล็อต ออนไลน์ says:

    It’s onerous to search out educated individuals on this matter, however you sound like you already know what you’re speaking about! Thanks

  37. High quality supplements help you build the
    body of your dreams. If you wish nothing but the best for your
    silhouette and health, be sure to get steroids from the Balkan pharmaceuticals.

    Balkan Pharmaceuticals is one of the largest manufacturers
    of quality goods. In our store, there are only original items obtained directly from
    the industry. Popular Supplements: Steroids, Fat-Burners, Post-Cycle Therapy (PCT), Combined Course and others.


  38. High quality supplements help you build the body of your
    dreams. If you wish nothing but the best for
    your silhouette and health, be sure to get steroids from the Balkan pharmaceuticals.
    Balkan Pharmaceuticals is one of the largest manufacturers of quality goods.

    In our store, there are only original items obtained directly from the industry.
    Popular Supplements: Steroids, Fat-Burners, Post-Cycle
    Therapy (PCT), Combined Course and others.


  39. มาร์คหน้า says:

    The very crux of your writing whilst appearing reasonable in the beginning, did not really settle well with me after some time. Somewhere throughout the paragraphs you were able to make me a believer but only for a very short while. I nevertheless have a problem with your jumps in assumptions and you would do nicely to fill in those breaks. In the event you actually can accomplish that, I could surely end up being fascinated.

  40. proscar order best on line pharmacy says:

    Durer Plus Longtemps Au Lit Naturellement

  41. hydroxychloroquine and hydroxyhydroxychloroquine says:

    What’s up, of course this piece of writing is actually
    nice and I have learned lot of things from it concerning
    blogging. thanks.

  42. แทงหวยออนไลน์ says:

    Needed to draft you this little note to say thanks a lot the moment again for your personal superb information you have documented in this case. It has been simply unbelievably generous with people like you to deliver unreservedly precisely what many of us might have distributed as an ebook to get some dough for themselves, precisely now that you could have done it in the event you decided. The advice likewise worked to be a fantastic way to be certain that the rest have the identical keenness just like mine to know a lot more regarding this issue. I think there are lots of more pleasant times up front for individuals that look into your website.

  43. We’re a gaggle of volunteers and starting a new scheme in our community. Your website provided us with useful info to work on. You’ve done a formidable job and our entire neighborhood will be thankful to you.

  44. dr. Jáger Krisztina ügyvéd says:

    Keep up the great piece of work, I read few blog posts on this website and I think that your site is very interesting and holds sets of fantastic information.

  45. gewürzgeschenk says:

    Great write-up, I¦m regular visitor of one¦s website, maintain up the nice operate, and It’s going to be a regular visitor for a long time.

  46. google ads says:

    Thanks for the good writeup. It if truth be told was once a entertainment account it. Glance complicated to far introduced agreeable from you! However, how could we keep up a correspondence?

  47. pop over to this website says:

    Thanks for the sensible critique. Me and my neighbor were just preparing to do a little research on this. We got a grab a book from our area library but I think I learned more from this post. I am very glad to see such fantastic information being shared freely out there.

  48. ASKMEBET เว็บพนันออนไลน์ AMBXBET
    Ambxbet เราคือ Platform เว็บเดิมพัน เบอร์ 1
    askmebetเว็บพนันสายพันธุ์ใหม่ ด้วยเราที่เป็นเว็บแบรนด์ที่ได้รับมาตราฐานระดับสากล ไม่ผ่านเอเย่นต์หรือตัวแทนต่าง ๆ มีสถานที่ตั้งอยู่ใน คาสิโน ต่างประเทศอย่างถูกต้องตามกฏหมาย
    โดยเราคัดสรรบริการ การเดิมพันออนไลน์ ทั้งกีฬา บาคาร่า คาสิโนสด
    เกมส์ สล็อต ยิงปลา ที่รวบรวมไว้ภายใต้แบรนของเรา Ambxbet เรียบร้อยแล้ว ทำให้ท่านไม่ต้องเสียเวลาในการเปลี่ยนเว็บ

  49. Plaquenil says:

    generic viagra 26 cialis

  50. scrap car buyer says:

    Do you have a spam problem on this blog; I also am a blogger, and I was wondering your situation; we have developed some nice practices and we are looking to trade methods with others, be sure to shoot me an e-mail if interested.

  51. big booty sex doll says:

    I’ve been exploring for a little for any high quality articles or blog posts in this sort of house . Exploring in Yahoo I finally stumbled upon this site.

  52. priligy at walgreens says:

    Achat Cialis Generique

  53. cialis 5 mg daily says:

    Hi there! Do you know if they make any plugins to assist with SEO?
    I’m trying to get my blog to rank for some targeted keywords but I’m not seeing very good gains.
    If you know of any please share. Many thanks!

  54. contador online says:

    Hi there! I’m at work browsing your blog from my new iphone 3gs! Just wanted to say I love reading your blog and look forward to all your posts! Carry on the outstanding work!