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If Google Chrome is your preferred web browser then you more than likely have seen the This site can’t provide a secure connection error or an ERR_SSL_PROTOCOL_ERROR, while surfing the web. This SSL error can randomly pop up on any website and it can be very annoying to deal with. This SSL security error affects nearly everyone that uses Google Chrome and it can be caused by a wide variety of things online. Finding out the cause of every SSL Error is nearly impossible, but there are still things that can be done to get rid of this error. Here is a series of steps for you to follow that will help you terminate the SSL protocol error.

Correct the Date and Time on your system

Having incorrect time and date settings can affect your system because that means your computer is lagging behind. You should always make sure your system settings are up-to-date because that can cause a number of problems. Google Chrome has a certificate validity that authenticates your computer and has an expiration date. If your date and time are incorrect that will cause an error in the SSL security authentication process. Just remember to update the time and date of your computer, so your system is never out of sync with the servers you are trying to access.

Clear your SSL State

  1. Go to Customize and control Google Chrome, the three dots you see just below the X (close) button.
  2. Click on Settings.
  3. Scroll down and open Advanced Settings
  4. Go to Open proxy settings.
  5. A window named ‘Internet Properties’ will open up.
  6. Go to the Content window and click on the Clear SSL State Button
Clear Chrome SSL State

Clear Browsing Data

Browsing data can sometimes affect your browser ad cause multiple SSL errors. Clearing your browsing data can often fix this error in a matter of minutes.

  1. Launch Chrome;
  2. Press Ctrl + Shift + Delete;
  3. Ensure that the time range is set to “All Time”;
  4. Check the checkbox for “Cookies and other site data”;
  5. Check the checkbox for “Cached images and files”;
  6. Hit Clear Data
Clear Chrome Cache

Disable QUIC Protocol

Disabling QUIC Protocol can remove the SSL error completely. QUIC (Quick UDP Internet Connections) are enabled into chrome and it provides a TLS/SSL equivalent connection to Google’s servers.

  1. Paste chrome://flags/#enable-quic in the address bar of your Chrome browser and hit Enter;
  2. Under Experimental QUIC Protocol option, you’ll see that it’s set to “Default”. Disable it.
  3. Relaunch Chrome

Check your Antivirus Settings

Antivirus can sometimes cause an SSL error. If you have an outdated version of SSL the antivirus may block it, which causes an error in chrome. Antivirus checks for malicious security threats and also checks for outdated SSL certificates. Briefly turning off your antivirus may allow you to open chrome and visit the error generating website. If your Antivirus scans SSL protocols you will probably encounter errors while using chrome.

Check your Firewall

If a website is blocked by your firewall your system will display the ERR_SSL_PROTOCOL_ERROR message in Chrome. Make sure you check your blacklist and your firewall settings. Removing that website/IP address from your blacklist should be an easy solution for the SSL Error.

Adjust your Internet Security

If your internet and privacy level is too high it may restrict you from visiting certain websites.

  1. Type “Internet Options” in the search bar of your computer and hit Enter;
  2. The “Internet Properties” dialogue box will open. Inside it to navigate to the Security tab and look at the slider given there. If that slider is too high on the scale, bring it in the middle (to Medium level) and click OK.
  3. Try opening the website again.
Windows Internet Options

Enable all SSL/TLS Versions

Sometimes SSL/ TLS versions of some websites may not be compatible with your version of chrome. You may need to change the SSL/TLS protocol settings because Chrome doesn’t permit deprecated SSL/TLS protocols to run automatically.

  1. Click on the three dots you see in the top-right corner of Chrome
  2. Go to Settings.
  3. Go to Advanced Settings.
  4. Open Proxy settings
  5. Click on Advanced Scroll down till the Security section comes up.
  6. Check all SSL and TLS versions.
  7. Click Apply.
  8. Relaunch your Chrome.

Author: Jon Harris
Last Modified: 19/01/2022
Tags: #Howtos