Get Rid of the ERR_SSL_PROTOCOL_ERROR with Effective Resolutions

Get Rid of the ERR_SSL_PROTOCOL_ERROR with Effective Resolutions

userPosted by Mason Lava

Using Google Chrome to browse the web is a common phenomenon. A common online user tendency. Most users are pleased with the interface. However, getting stuck in errors is not new. No site can cause a connection ERR_SSL_PROTOCOL_ERROR” when browsing SSL secure websites on the Google Chrome browser.  Don’t worry, we’ll troubleshoot those issues right here on the blog



While connecting between the Chrome browser and the server, the client authentication certificate may be absent from the browser.

  • The server has an authentication certificate issue(not renewed or expired)
  • The client has the certificate but can’t afford it.
  • Errors because of outdated Chrome Extensions
  • Corrupted host file
  • The firewall is blocking the system’s IP address or the website.
  • An antivirus program also blocks the TSL and SSL connections.
  • The connection is not set up as the QUIC protocol is obstructing it.

A Quick Guide to fix   ERR_SSL_PROTOCOL_ERROR on Google Chrome

This gives you a proper resolution for fixing the ERR_SSL_PROTOCOL_ERROR message. These troubleshooting techniques will allow you to re-establish a connection with a safe website.


1. Clear Cache of Browser

Indeed, the most practical solution to address browser-server errors like ERR_SSL_PROTOCOL_ERROR. You can hold the “Shift+Ctrl+Delete” keys on the Windows keyboard when clearing the browser cache in Google Chrome.

The process of removing cache is exceedingly simple, as mentioned below:

  • Step 1: Hold down Shift + Ctrl + Delete.
  • Step #2: Set “AA Time” in the time range section.
  • Step #3: Step 3: Uncheck the browsing history checkbox and look for the rest of the options.
  • Step #4: Press Enter

Once the cache clears, you can check if the issue is fixed or not by reloading the page.


2. Disable the QUIC Protocol

QUIC stands for Quick UDP Internet Connections, which creates a secure connection to the server. QUIC is almost the same as the TLS and SSL protocols and is always enabled in Chrome by default.

However, it sometimes conflicts with the SSL protocol of the websites and therefore displays the ERR SSL error message. You can get rid of this by simply typing “chrome://flags/#enable-quic” in the address bar and pressing the “Enter” button.

Next, check the QUIC protocol at the top of the screen and disable it.

While reloading your website, you will see that the ERR_SSL_Protocol_Error is duly eliminated.

This is not highly recommended, but it is proven and effective in some obscure cases. Hence, we’re putting it on the list.

 This protocol is enabled in the Chrome browser by default. Then you disable it, and you will fix this error. Simply copy and paste ‘chrome..//flags/#enable-quick’ into the address bar. Then tap ‘Enter.’ On your screen’s upper part, you’ll see the experimental QUIC protocol set as the default. Now disable it and relaunch Chrome.


3. Remove The SSL State

Clearing the SSL is a good substitute to resolve the issue immediately

  • Step #1: Click on Google Chrome settings on the three dots that appear on the top-right side of the browser.
  • Step #2: Then, go to the navigation menu, and select “Settings” in the top-left corner of the screen. Next, select the “System” option from the advanced drop-down menu.
  • Step #3: Now, go to the “open proxy settings” and Internet Properties will pop up.
  • Step #4: Finally, explore the Content tab and select the “ Clear SSL state.

Nevertheless, in any situation the outlined method fails to resolve localhost SSL protocol errors, you can still clear the SSL state.

  • Navigate the three dots that you see in the right-hand corner of Chrome. You’ll find it beneath the close (X) button.
  • Tap on ‘Settings.’
  • Go down this page and tap on the ‘Advanced Settings.’
  • Navigate to ‘Open proxy settings’ by either searching in the search bar or scrolling down the page.
  • You’ll see the window for ‘Internet Properties’ opening up.
  • Navigate to the ‘Content’ window and tap on the ‘Clear SSL State’ button.


4. Install Chrome’s latest version

The issue may often result from a browser that is not updated. An outdated browser results in a variety of connection errors like ERR_SSL_PROTOCOL_ERROR. Hence, this error is no exception at all. This Chrome browser automatically updates based on Internet Connection Settings.

But if there is any confusion about whether it is updating itself, go to Google and install the latest version of Chrome. Perhaps this will resolve this error.


5. Disable Chrome extensions

A corrupt Google Chrome extension triggers the browser to bring out various connections with ERR_SSL_PROTOCOL_ERROR. It is especially true for users who have installed several extensions on their browsers. You can disable it and find the prompt fix to resolve this issue. Also, it is not feasible to know the extension that may result in connectivity issues. So, the only solution you have got is to activate the extensions.

Launch the browser and then tap the three-dot vertical icon in the top-right corner. Now go to ‘More tools and then choose ‘Extensions.’ Also, you can disable each extension one by one.

Tap the ‘Remove’ button. You can also click the blue toggle icon. When you remove a specific extension, refresh the browser. Check if the connection error is there or not. If it disappears after you disable an extension, it means a particular extension may result in the ERR_SSL_PROTOCOL_ERROR problem.


6. Look at the date and time of your system

When the date and time are not updated; the system may encounter an SSL protocol error.

Note: An SSL certificate is valid only if it has not expired. Besides, It signifies that if the certification expiration has not passed, it will remain valid.

You can follow the steps below to check the date and time.

  • Go to ‘Settings/Control Panel and choose ‘Time & Language.’
  • On the next page, tap the “Change” button.
  • Now, update the system’s date and time correctly. To prevent this problem from occurring again, turn ‘Set time automatically.’ 

7. Examine Your Internet Security and Privacy Settings

Here are the steps required to change the setting: 

  • Step #1: Launch the Control Panel
  • Step #2: Explore “Internet Options”.
  • Step #3: Go to the “Security” tab and change the security level to “medium.”
  • Step #4: Similarly, click on the Privacy tab and select “medium.”

Finally, try reloading the page to see if the issue is resolved.


8. Activate All TLS/SSL Versions

After going through all the methods, you can use this issue to fix it. However, activating all TLS/SSL means the site with outdated or insecure protocols will load and could potentially be dangerous for the system.

However, if everything does not work, you can work out this.

Let’s know how to activate all TLS/SSL versions.

  • Step #1: Open Advanced Chrome Settings and select “System.
  • Step #2:  Go to “Open Proxy Settings.”
  • Step #3: Choose the “Advanced” tab.
  • Step #4: Go to “Security”
  • Step #5: Check the boxes of all TLS/SSL Versions.

Now, the common practice is to restart the browser to see if the issue is fixed.


9. Check Antivirus Settings

Warning: This step isn’t entirely safe as it allows the older, insecure SSL/TLS protocols that some websites still use. 

Antivirus protects you from malicious pages that can harm you. It usually does this by checking the SSL/TLS protocol a website uses. When they find any unsafe and outdated protocol, it prevents them from visiting the site.

It does not require changing the settings for antivirus software as the UI and settings differ from one to another. You’d have to find out if it’s scanning the SSL protocol. If it’s disabled, check what happens. If the problem persists, restore the original settings.


Final Words

 I hope this tried and tested method will be helpful to fix ERR_SSL_PROTOCOL_ERROR. And you can resolve all such issues. In case you’re not able to get rid of the error, you can still get in touch with WordPress Support Team. They’ll help overcome all kinds of technical glitches and error messages.

Tagged with:
  • On Time Delivery

  • 50


  • 24×7 WordPress Support

  • Cost Effective Services

  • Skills Wordpress Developers

  • 100% Satisfaction