How to FIX ERR_CERTIFICATE_TRANSPARENCY_REQUIRED
The most common issue in receiving the error ERR_CERTIFICATE_TRANSPARENCY_REQUIRED in Chrome browser is a problem with CT logs, as SSL is corrupted, misconfigured or expired. A Certificate Transparency (CT) requires each certificate to be properly logged. A bit of theory, CT is an Internet Security standard and now a requirement for all trusted Certificate Authorities (CA). The CA must add any issued/reissued SSL certificate to CT logs, best practises suggests adding it to multiple logs. The logs operate as an industry safeguards again misissuance. It is a mandatory industry requirement. No valid log for issue SSL would trigger the browser to show error below:
Solution for Website owners
Urgently contact your CA or a company who sold your SSL certificate and request them to add your website (domain name) to the CT logs. Change the CA if they fail to resolve the issue quickly. Leading CAs do not face issues like that in most cases and respect the CT rules.
Solution for Website visitors
- The route cause should be eliminated by the website owner and their certificate authority. The best thing you can do is contacting the website owner and letting him know about the faced issue
- Update Chrome browser to the latest version to avoid issues related to old software. It is very easy to do, just type chrome://help/ in the address bar and press Enter. The Chrome itself will check its relevance and download the latest updates; Alternative way to update — click on the three vertically placed dots in the upper right corner, go to the «About the program» in the window that appears — the browser will indicate the version number and update.
Avoid next steps
- Do not turn off Antivirus or Firewall;
- Do not avoid Browser warning by visiting website;
Conclusion
- Webmasters: Web site owners should urgently resolve the issue by contacting CA.
- Visitors: The error is critical and enough to avoid using the website.
How To Fix NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Error In Google Chrome
A transparency required error means the website’s SSL certificate was not properly logged when it was issued
Certificate Transparency is now a requirement for all trusted Certificate Authorities. What that means is that whenever an SSL certificate is issued, the CA must add it to a Certificate Transparency log (usually several). These logs act as an industry safeguard against mis-issuance. Again, this is now a mandatory industry requirement, so failing to log an SSL certificate renders it essentially unusable because it will trigger browser errors like the your https connection is not private Google Chrome error: Unfortunately, there’s nothing that the average internet user can do to fix the error, it has to be addressed by the site owner, who needs the CA to re-issue and log the certificate on their behalf. The best you can do is to contact the site owner to make them aware of the issue, along with a link to this page so they know how to fix it.
How To Fix NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Google Chrome Error for Site Owners
As we covered, this issue is caused because your site’s SSL certificate wasn’t properly logged when it was issued. You’re going to need to either re-issue (and have logged) the existing certificate or else replace it with an entirely new one. It’s worth noting that reputable Certificate Authorities (such as Comodo) are unlikely to make this mistake. If your CA issued you an unlogged certificate and your website is now receiving errors, maybe consider switching certificate authorities. This issue shouldn’t affect certificates issued before transparency logging became a requirement. The mandate was rolled out in a way that allows existing certificates to expire naturally rather than be replaced early.
Purchase a new SSL certificate with proper logging
All Comodo SSL certificates are added to the relevant transparency logs, ensuring that you’ll never get an ERR_CERTIFICATE_TRANSPARENCY_REQUIRED error. You can save by purchasing a new Comodo SSL certificate direct from us:
Save Up 75% On Comodo SSL Certificates
Tip: You can typically save a significant amount by buying your SSL certificate direct instead of through your web hosting company. We sell all Comodo SSL certificates at up to 75% off.
Compare SSL Certificates
How To Solve the NET::ERR_Certificate_Transparency_Required Error
It’s common to run into errors while surfing the internet, even if you’re using a reliable browser like Google Chrome. If an issue with a site’s Secure Sockets Layer (SSL) certificate prevents the content from loading, you may see the NET::ERR_Certificate_Transparency_Required error. The good news is that you can follow a few troubleshooting steps to resolve this issue. Plus, you’ll be able to address the error both as a website owner and a visitor. In today’s guide, we’ll introduce you to the NET::ERR_Certificate_Transparency_Required error and its main causes. Then, we’ll explain how to fix it as a website owner and visitor. Let’s jump in!
Check Out Our Video Guide To Fixing NET::ERR_Certificate_Transparency_Required Error:
An Introduction To the NET::ERR_Certificate_Transparency_Required Error
“NET::ERR_Certificate_Transparency_Required” is specific to Google Chrome. This error message will prevent you from accessing a website, whether it’s your own or someone else’s. This Google Chrome error can usually be attributed to issues with a website’s SSL certificate. So, let’s take a moment to explain how SSL actually works. SSL is an encryption protocol that secures data sent between your browser and a website’s server. It prevents third parties from stealing any information you enter into a website. Therefore, SSL is essential to site security, especially ecommerce websites that handle banking details. Additionally, SSL authenticates data. This ensures that all data is sent to the correct server instead of a “man in the middle” that intercepts and steals your information. Here’s a diagram that shows the SSL protocol in action: 
You may notice that the above diagram mentions TLS. Transport Layer Security is the more modern version of the original SSL protocol. However, these terms are typically used interchangeably. For this security protocol to function, you’ll need to install an SSL certificate on your website. You may receive one with your hosting plan, or you can purchase one from an issuing authority. Furthermore, it’s important to know about Certificate Transparency. This framework reinforces the security of SSL certificates by helping domain owners see and manage their certificates, along with identifying unauthorized certificates. Issuing authorities are also required to log their certificates within the transparency framework: 
If you’re seeing the NET::ERR_Certificate_Transparency_Required error, this means that the site’s certificate isn’t contained within the Certificate Transparency log. It can’t be verified as an authorized certificate, so Google Chrome blocks access to the site to protect online users.
Common Causes of the NET::ERR_Certificate_Transparency_Required Error
- The site’s SSL certificate is not installed correctly. An incorrectly-installed and configured SSL certificate can trigger different SSL errors, including “NET::ERR_Certificate_Transparency_Required.”
- The SSL certificate is corrupted. A corrupted SSL certificate cannot enforce the SSL/TLS protocol.
- The certificate has expired. An expired certificate no longer enforces the data encryption and authentication protocol on a website.
Fortunately, there are a few easy ways to troubleshoot and solve this problem. In the next section, we’ll walk you through multiple fixes.
Easy Ways To Fix the NET::ERR_Certificate_Transparency_Required Error
By now, you should have a general understanding of the NET::ERR_Certificate_Transparency_Required error and why you may be seeing it in Google Chrome.
Now, we’ll explain how to troubleshoot this error. We’ll cover fixes for both site owners and visitors.
Solutions for Website Owners
If you’re seeing this Chrome error message on your own website, you’ll want to fix it as quickly as possible. Otherwise, visitors won’t be able to access your content, and they may never return. Additionally, not having a valid SSL certificate on your site can harm your search rankings.
1. Ask the Issuing Authority To Add Your Certificate to the Certificate Transparency Log
The first step is to contact your certificate issuing authority. They may have made an error by not adding your SSL certificate to the Certificate Transparency log. You can ask them to correct this problem immediately.
You should be able to find a customer support email or ticketing system belonging to the issuing authority where you purchased your SSL certificate. Alternatively, if you have a certificate included in your hosting plan, it’s worth asking your host for assistance.
2. Apply the Certificate Transparency Exemption Policy
Due to privacy concerns, you may have previously asked the issuing authority not to add your SSL certificate to the Certificate Transparency logs. In this case, you’ll need to apply the Certificate Transparency exemption policy so that users can still access your website.
Note that this exemption policy is only applicable to corporate-managed devices in Chrome. For example, if you’re an educational facility or company that controls all its Chrome users and browsers, you can use this method to make your site available to users within your organization.
This policy will exempt your domain and/or subdomain from listing its SSL certificate in the Certificate Transparency log. Therefore, users will be able to access your website without seeing the NET::ERR_Certificate_Transparency_Required error message.
We recommend following these steps to set policies in Chrome Enterprise. If you’re working with Windows, the policy will look something like this:
3. Reissue and Reinstall Your Certificate
Finally, if you believe that your SSL certificate is misconfigured or incorrectly installed, you may want to reissue and reinstall it. This way, you’ll know that your certificate is set up properly.
If your certificate is included in your hosting plan, you can contact your host’s support team for assistance. They may be able to walk you through the process or even do it on your behalf.
Otherwise, you’ll need to reissue it yourself. To do this, log in to the site where you purchased the certificate. Then, generate a Certificate Signing Request (CSR) to the issuing authority. You may also have to fill out a reissue form asking for the authority to carry out this process.
Once your certificate has been reissued, it’s time to reinstall it. If you’ve already installed an SSL certificate before, you’ll simply need to follow the same process.
For example, if you’re a Kinsta customer, you’ll need to log in to MyKinsta and head to WordPress Sites > sitename > Domains. Then, under the corresponding domain, click on the three dots and select Add custom SSL certificate:
Now accept the confirmation message by clicking on Next:
You’ll then be prompted to enter the contents of your private key (.key file) and certificate (.cert, .crt, or .cer file):
Finally, hit Add Certificate to finish the installation process. It’s worth running an SSL check to verify that you’ve completed this correctly.
Solutions for Website Visitors
If you see the NET::ERR_Certificate_Transparency_Required error while trying to access someone else’s website, the problem could lie with your browser or device. In this section, we’ll explain how to troubleshoot the issue.
1. Disable Your Firewall and Antivirus Software
Firewalls are barriers that filter the sites and users that have access to your device. They prevent hackers from taking control of your device remotely and stealing your data or installing malware.
Windows and macOS provide firewalls by default. Additionally, you may be using third-party antivirus software that further secures your device.
In some cases, firewalls can block non-harmful traffic and prevent you from visiting otherwise safe websites. Therefore, you can try disabling your firewall to see if you can access the site without triggering the NET::ERR_Certificate_Transparency_Required error.
On Windows, you can disable your firewall by heading to Control Panel > System and Security > Windows Defender Firewall:
Next, click on Turn Windows Defender Firewall on or off, and select Turn off Windows Defender Firewall (not recommended):
If you have a Mac, you can disable your firewall by clicking on the apple symbol and selecting System Settings:
Choose Network in the left-hand menu and then Firewall. Now, you can toggle off the firewall:
We don’t recommend browsing the internet without a firewall. Therefore, if you keep seeing the NET::ERR_Certificate_Transparency_Required error, it could be worth installing different antivirus software and seeing if that fixes the problem.
2. Update Google Chrome
An outdated version of Google Chrome can sometimes trigger the Certificate Transparency error. If you don’t regularly update your browser, it’s worth doing it now.
Fortunately, this is very easy to do in Chrome. First, click on the three dots in the top-right corner, then hit Settings:
Next, click on About Chrome in the bottom-left menu:
Chrome will now search for updates and may even install them automatically. Otherwise, you will see a message prompting you to download and install the latest software version.
3. Delete Cookies and Cached Data
The browser cache is a collection of stored files from websites that you’ve visited before. Caching lets your browser load a site more quickly on subsequent visits because it already has some files saved.
Moreover, your browser stores cookies from the sites you visit. These text files save information about you, including your login details and activities.
Both cached files and cookies can trigger browser errors if they have outdated data within their files. That’s why clearing them from your browser is an essential troubleshooting step for many Chrome errors.
You can easily clear your browser cache and cookies by clicking on the three dots in the top-right corner of your browser window and selecting More tools > Clear browsing data:
Make sure that the boxes are checked next to both Cookies and other site data and Cached images and files:
Finally, click on Clear data. Try reloading the site to see if it triggers the Certificate Transparency error.
4. Disable Chrome Extensions
Chrome extensions add extra features to your browser and can improve your online browsing experience. However, an extension could also be triggering the NET::ERR_Certificate_Transparency_Required error due to bugs or other software problems.
To disable and delete Chrome extensions, click on the three dots in the top-right corner of the browser and navigate to More tools > Extensions:
You can disable an extension by clicking on the toggle next to it. Alternatively, selecting Remove will delete it:
If you use a lot of extensions in Chrome, you’ll need to disable them one by one until you find the culprit. Then, you can delete the extension causing the issue.
5. Clear the SSL Slate
An SSL slate stores SSL certificate details of the websites you’ve previously visited. If the site’s SSL certificate has changed, it could potentially cause an issue and trigger a browser error. Although this is rare, it could be worth clearing the SSL slate on your device.
To do this on Windows devices, head to Control Panel > Network and Internet > Internet Options:
In the pop-up window, switch to the Content tab and click on Clear SSL slate:
Windows will now clear the cache and show you a success message.
If you’re using a Mac, you can only clear the SSL slate within the Chrome browser. To do this, you’ll need to follow the steps that we covered earlier in the tutorial, where we showed you how to delete cookies and cached data.
6. Ignore the Certificate Error
If you’re certain that the website you’re trying to access is secure, you can override the Certificate Transparency error. This approach will tell the browser that you want it to ignore the issue.
However, we don’t recommend this method because it could put your device at risk. You’ll also want to reverse it immediately after you’ve finished accessing the site as you could be exposed to other unsafe websites.
To ignore the certificate error, type “chrome://flags/” into the Chrome browser. Then, search for “Insecure origins treated as secure” in the search box at the top of the screen:
Select Enabled from the dropdown menu to the right. You’ll then need to relaunch Chrome to apply the changes.
7. Contact the Site Owner
Finally, if none of the above methods have worked, it could be worth contacting the website’s owner and telling them they have an issue with their SSL certificate. They should be able to fix the problem on their end.
To do this, you’ll need to search for an email address associated with the website or submit a message via a contact form. You might even reach out to them on social media if you can’t get through to them via the site.
Summary
SSL certificates are essential for encrypting data and protecting online users. However, they can sometimes trigger Google Chrome errors, such as “NET::ERR_Certificate_Transparency_Required”.
As a website owner, you’ll need to contact your certificate issuing authority to either add your certificate to the Certificate Transparency log or reissue and reinstall it. Alternatively, site visitors can bypass this error by disabling their firewalls, deleting Chrome extensions, or clearing their SSL slates.
Partnering with a high-quality web host can help you prevent common SSL issues and other problems. At Kinsta, our hosting packages are designed to optimize your website’s performance and security. Plus, if you run into any issues, our support team is here to help you 24/7. Check out our managed WordPress hosting plans today!
Get all your applications, databases, and WordPress sites online and under one roof. Our feature-packed, high-performance cloud platform includes:
- Easy setup and management in the MyKinsta dashboard
- 24/7 expert support
- The best Google Cloud Platform hardware and network, powered by Kubernetes for maximum scalability
- An enterprise-level Cloudflare integration for speed and security
- Global audience reach with up to 35 data centers and 260 PoPs worldwide
Get started with a free trial of our Application Hosting or Database Hosting. Explore our plans or talk to sales to find your best fit.
Is your WordPress site slow?
Uncover your website’s performance bottlenecks to deliver a better user experience.
Ошибка net::err_certificate_transparency _required как исправить
Многие пользователи Chromium и Google Chrome столкнулись с проблемой: при попытке открыть сайты выдается сообщение net::err_certificate_transparency_required, либо «Ваше подключение не защищено». Установлено что данная ошибка появляется при использовании браузеров Хрома и Хромиума 53-й версии. Как известно, любой браузер использует сертификаты безопасности при попытке входа и обмена информацией с сайтами. Данная ошибка появляется на сайтах использующих сертификаты Symantec выпущенные 1 июня 2016 года, а так же сертификаты принадлежащие их компаниям Thawte и GeoTrust. Symantec допустила ошибку с одним из сертификатов — что вызвало многочисленные сообщения об ошибках у многих пользователей.
Содержание скрыть
Причины ошибки net::err_certificate_transparency_required
Как было сказано выше, самая распространенная причина — ошибка с сертификатом. Но не стоит вести себя беспечно, может случиться что ваша система, браузер или все вместе подверглись атаке вирусов и троянов. Настоятельно рекомендуем использовать антивирусный софт и регулярно обновлять антивирусные базы. При заражении злоумышленники могут воровать и использовать ваши данные, под угрозой ваши пароли, сообщения, информация по банковским и кредитным картам.
Net::err_certificate_transparency_required как исправить
Самый простой и рекомендуемый способ исправить ошибку net::err_certificate_transparency_required это полностью перезапустить браузер, почистить его кеш. На данный момент выпущена 54-я официальная версия. Наберите в адресной строке chrome://help/, загрузите и обновитесь до последней версии и пробуйте повторно. Либо остается дождаться следующего обновления, в котором этот баг устранят.
Если все таки хочется попасть на сайт здесь и сейчас без обновлений и заморочек выполните следующие шаги (при условии что вы доверяете этому порталу, внимательно посмотрите правильное написание домена в адресной строке, там не должно быть опечаток, должен быть оригинальный адрес «vk.com», «mail.ru», а не «vc.com», «mall.ru»), выполните следующие шаги:
- Нажмите на кнопку «Дополнительно». Появится кнопка «Перейти на сайт(небезопасно)», нажимаем на нее и попадаем на веб-ресурс. Если ресурс не известный, вызывает опасения или сомнения — просто закройте вкладку.
Исправляем ошибку Ваше подключение не защищено
Будьте осторожны при работе с экспериментальной версией
Надеюсь вы разобрались с проблемой net::err_certificate_transparency_required и знаете что делать и как исправить эту ошибку.
Рекомендуем к просмотру короткое видео на данную тему:
Евгений Загорский IT специалист. Автор информационных статей на тему Андроид смартфонов и IOS смартфонов. Эксперт в области решения проблем с компьютерами и программами: установка, настройка, обзоры, советы по безопасности ваших устройств. В свободное время занимается дизайном и разработкой сайтов.
- Telegram