How to Fix ERR_SSL_PROTOCOL_ERROR in Chrome?

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Fix Err SSL Protocol Error in Chrome and Android

Easy Steps to fix ERR_SSL_PROTOCOL_ERROR in Chrome

Do you browse the web with Google Chrome? We appreciate that! Most people who use the Internet recommend its attractive user interface. When using the Google Chrome browser for viewing SSL-secure websites, you might often see the SSL privacy issue “ERR_SSL_PROTOCOL_ERROR.” subsequently, this problem frequently goes away by itself when you reload the website, but at times it shows up again.

This Error is irritating and disturbing and is one of the most common errors you could encounter when exploring the Internet. The SSL protocol, used to encrypt data between a website and your Browser, frequently has issues that lead to this Error. It also indicates that the website you are attempting to view is not secure and that your Browser cannot create a secure connection. There are several causes for this issue. However, you may address each one with simple solutions.

In this article, we’ll see how to fix the err_ssl_protocol_error and discuss some typical reasons. We’ll explore some potential fixes for this issue. Before we continue with the potential fixes for this issue, let’s understand exactly “ERR_SSL_PROTOCOL_ERROR.”

Let’s explore!


When there is an issue with the SSL protocol that generates an encrypted connection between a website’s browser and the server, the error code ERR_SSL_PROTOCOL_ERROR usually occurs.

Numerous causes, such as an outdated browser or OS (Operating System), an invalid SSL certificate, or an improper SSL setup on the server side, maybe to cause this Error. Your browser will often provide an alert when this phenomenon occurs: “Your connection is not private” or “This site can’t provide a secure connection.”

Suppose you continue to receive warnings of this type on your mobile or PC browser. In that case, we’ve provided several solutions for “fixing err ssl protocol error in Chrome” and “fixing err ssl protocol error on Android.”

Typical Reasons for the ERR_SSL_PROTOCOL_ERROR

Here are a few potential reasons why you are getting this error message.

  • Incompatible expansions from third parties
  • Inadequate connections to the Internet
  • Incorrect configuration of the proxy
  • An out-of-date SSL/TLS protocol version
  • Inaccurate time and date
  • Expired Certificate
  • A mismatch between the encryption methods used by the client and server.
  • An insecure SSL certificate also ends up displaying the SSL connection error message.

Methods for Fixing ERR_SSL_PROTOCOL_ERROR Quickly in Chrome and Android

Since we learn more about this issue and its possible motives, let’s discuss how to solve err_ssl_protocol_error techniques!

1. Remove Your SSL State

If ERR_SSL_PROTOCOL_ERROR continues disturbing you, you can try erasing your System’s SSL state. To achieve it, follow the instructions below:

  • Click on the Windows icon
  • Type “Internet Options“, and a new Internet Properties view will appear
  • Click on the Content Tab
  • In the Certificate section, click on “Clear SSL State
  • SSL State will be cleared in seconds.
Clear SSL State

Now proceed to reopen the web page with Chrome.

2. Check your System’s Date

The most common cause of SSL failures is the date. Your Chrome browser will display ERR_SSL_PROTOCOL_ERROR when the dates on your computer and the server you’re attempting to access are out of sync. Change your System’s date to the current date to rectify the issue, and then try reaccessing the website. You won’t run across any problems.

3. Delete Browsing Data

Sometimes browsing data may also get in the way of your internet browsing, causing you to keep getting that annoying SSL error. Follow the instructions below to remove browsing history from your Chrome browser if your computer’s date is accurate:

  • Ctrl + Shift + Delete when using Chrome.
  • Ensure “All Time” is selected as the time range.
  • Cookies and other site data” should be checked in the checkbox.
  • Check the “Cached images and files” checkbox.
  • Click on Clear Data.

Please wait for it to finish, then attempt to reload the webpage in your Browser when it is completed. There is an excellent possibility that it will open without any issues.

4. Turn off antivirus Software and Third-Party Extensions for the Browser

Extensions are a great approach to increasing your browser is functionality. These extensions can often interfere with protocol settings.

Visit your extensions page by selecting More Tools> Extensions from the Chrome menu to see any possible extensions causing issues.

Turn off all your extensions. Then go back to the webpage where the issue appeared. You may conclude that an extension is to fault if it disappears.

The next step is activating each extension and refreshing the page between each one. You can start looking for a solution when you’ve identified who the criminal is. Disabling any installed firewalls or antivirus programs is also a brilliant idea.

5. Turn off the QUIC Protocol

Google first created a novel internet protocol called QUIC for their Chrome browser. It is a replacement for the HTTP protocol to enhance performance.

The most recent versions of Chrome have QUIC enabled by default, but you may turn it off from the options panel. Disabling QUIC will force the browser to use HTTP instead for those with connection issues.

QUIC could be turned off in Chrome by entering chrome://flags/#enable-quic:

  • Click the dropdown menu next to Experimental QUIC Protocol
  • Select Disabled.
  • Click the Relaunch button, which is at the bottom of the page.
  • Return to the website you are trying to load and check whether the protocol challenge is still there.
Disable QUIC Protocol in Chrome

6. Verify the Antivirus Settings

Sometimes the source of an SSL problem may also be your antivirus software. All current antivirus software analyses websites for potentially harmful malware and other security risks, which includes looking at a site’s SSL/TLS version.

The antivirus prevents us from visiting a website if it is utilizing an out-of-date SSL version. In this instance, the issue can be fixed by momentarily turning off the antivirus. Turn off your antivirus software to check if you can access the erroneous website.

7. Enable the SSL/TLS versions

Activating all SSL/TLS versions is an additional strategy you could do. It will make sites using outdated or unsafe protocols load. Although not usually advised, this technique can assist you in locating the ERR_SSL_PROTOCOL_ERROR’s source.

  • Select System from the Advanced Settings menu in Chrome to enable all SSL/TLS versions.
  • Then choose Open Proxy settings
  • Click the Advanced tab:
  • The boxes for each TLS/SSL version should be clicked.
  • Once you are done, refresh your browser to check if you can still access the page.

8. Choose the level of your internet security and privacy

Your access to specific websites can be restricted if your internet security and privacy settings are too extreme. You can alter your settings to see if it solves this Error.

  • To accomplish this, enter “Internet Options” into your device’s search bar and press Enter.
  • Select the Security tab and use the slider to adjust it to the medium level in the Internet Properties window that shows up:
  • Click the OK button once you’re done.
  • Try visiting the website once more after refreshing your Browser. 

9. Check your Firewall

Chrome will be unable to access any websites that are included on your Internet Firewall’s block list. Verify your Firewall’s block list to make sure the website you’re attempting to access is not on there. Removing it will allow you to reload the webpage if you find it there.

10. Verify Your SSL Certificate.

Checking your SSL certificate is another option if you still see an issue notice. As we previously stated, a revoked, lost, or expired certificate could trigger the error message. Therefore, it’s crucial to ensure that the one you’re using is legitimate.

You can verify your certificate’s validity with an online SSL checker Tool.

11. Reaching out to the website’s owner.

If you go through all the previously mentioned steps but cannot access the website, there could be a server-side conflict. Inform the website owner regarding the issue; they might be able to resolve it.

12. Make use of a VPN (Virtual Private Network) to access the website

If your internet provider or the site stops you from accessing the website, your browsers could show various error messages, including ERR_SSL_PROTOCOL_ERROR. Nevertheless, you may still access the website if you use a virtual private network. To test whether you can access the website, switch your VPN‘s default zone.

Here an important note is to execute this process only if you have complete confidence that visiting the website you seek to access won’t result in legal action being taken against you by the authorities.


It may be frustrating to encounter error warnings when visiting a website. ERR_SSL_PROTOCOL_ERROR is one of the most frequent ones you might come across when using Chrome. Fortunately, there are a few fixes you can use.

Several factors can cause this mistake, as we covered in this article. The most probable perpetrators include wrong system or protocol settings, outdated or invalid certificates, and inappropriate cache settings. You must be able to swiftly remediate this issue by deleting your cache, verifying the validity of your SSL certificate, and changing your protocol and privacy settings.

We hope that this article will assist you in addressing the issue. Please let us know if you have any queries or suggestions for improvement.


How do I fix/remove the SSL Protocol Error?

If you are a visitor experiencing ERR_SSL_PROTOCOL_ERROR, 

try these things:

  • Removing a Troublesome or Outdated Browser Extension.
  • Turning off the Firewall or Antivirus temporarily.
  • Deleting Browser Cookies.
  • Blocking the QUIC protocol.
  • Adjusting the System’s Time and Date.
  • And other solutions we have explained above

How do I reset my SSL Settings?

Perform the following steps to Clear SSL State in Google Chrome

  1. Click the. (Settings) icon, and then click Settings.
  2. Click Show advanced settings.
  3. Under Network, click Change proxy settings.
  4. The Internet Properties dialog box appears.
  5. Click the Content tab.
  6. Click Clear SSL State, and then click OK.

Where is the SSL certificate in Chrome?

Navigate to chrome://settings and scroll down to ‘Advanced’.

  • Under “Privacy and Security,” click “Manage Certificates.”
  • On the popup that was launched, select “Trusted Root Certification Authorities’. The certificate will be displayed there.
Janki Mehta

Janki Mehta

Janki Mehta is a passionate Cyber-Security Enthusiast who keenly monitors the latest developments in the Web/Cyber Security industry. She puts her knowledge into practice and helps web users by arming them with the necessary security measures to stay safe in the digital world.