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How to Fix Google Chrome Error – ERR_SSL_PROTOCOL_ERROR

  • Začetnik teme Angelus
  • Datum pokretanja


Facing ERR_SSL_PROTOCOL_ERROR on Google Chrome? There are hundreds of thousands of users like you in the same boat as you. But don’t you worry as we’ve got your back. We will walk you through a series of straightforward steps that will help you terminate the ERR_SSL_PROTOCOL_ERROR and will leave you in peace.



Why is Your Chrome Displaying SSL Connection Error –ERR_SSL_PROTOCOL_ERROR?
Well, there could be tons of reasons behind it. It could be as simple as wrong system date and it could be a complex server issue. In any case, our course of action will probably help you throw this SSL error out of your Chrome.


  1. Invalid System Time
  2. Firewall blocking the websiteor IP address
  3. Website could be blacklisted in the Hosts file
  4. Browser extension blocking the website
  5. Cookies and Cache not cleared for a long time

Tips to Solve “SSL Connection Error-ERR_SSL_PROTOCOL_ERROR”
Here’s the course of actions to solve SSL Connection Error-ERR_SSL_PROTOCOL_ERROR” in Google Chrome. If one doesn’t work out, try the next one and so on. Don’t shy away from trying any of these steps because you never know!

1) Disable QUIC Protocol
Disabling QUIC protocol will remove this error permanently form Chrome, here’s how you can do it.

  1. In your chrome browser URL, type chrome://flags/#enable-quic and hit enter.
  2. Experimental QUIC protocolwould probably have been set as Default. Change it to Disabled.
  3. Now go to the bottom of the page and click on RELAUNCH NOW
Worked? Great. Didn’t? Try the next one.

2) Remove the Hosts file
  1. Press Windows + R, type in C:\Windows\System32\drivers\etc & hit enter button
  2. You will find a file named hosts. Delete it.
Restart Chrome and see whether this has had any effects or not. If not, try the next one!

3) Clear SSL State
If the SSL State is not cleared, it might block SSL connection and cause the SSL Connection Error. Follow the steps below to clear the SSL state.

  1. Go to Start Menu > Control Panel > Network and Internet > Network and Sharing Center
  2. Now click on Internet Optionsfrom the bottom-left corner.
  3. A new Internet Properties window will appear.
  4. Now move to the Content tab and click on Clear SSL State.
“The SSL cache was successfully cleared” alert should be on your screen.

Again, restart Chrome and check if ERR_SSL_PROTOCOL_ERROR is still there.

Still nothing? Move on to the next step.

4) Update the System Time
The error could be occurring if the system time is running behind or ahead. Check if your date & time settings are updated.

5) Check Firewall Settings
If the website or its IP address has been blocked by your firewall, chrome will display the error. Check your firewall settings and if you find that website/IP address, quickly remove it.

6) Remove or Disable Extension
Sometimes, the browser extensions could be causing the SSL connection error. It’s hard to know which one is behind it. The best strategy would be removing or disabling extensions one by one.

To view all Chrome Extension, type chrome://extensions/ in the URL bar.

7) Clear Cache and Cookies
Whether you’re getting this error or not, you should clear the cache and cookies of your browser on regular basis. To do so in Chrome, type Ctrl + Shift + Delete and delete your cache and cookies.

We hope you’ve finally got rid of ERR_SSL_PROTOCOL_ERROR.


How to Fix ‘ERR_SSL_PROTOCOL_ERROR’ on Google Chrome

A quick guide on how to fix Chrome’s ‘This site can’t provide a secure connection’ or ‘ERR_SSL_PROTOCOL_ERROR.’

If Google Chrome is your window to the world of the internet, you must have encountered “This site can’t provide a secure connection” or ERR_SSL_PROTOCOL_ERROR message at least once. The thing about this error is that there’s no particular pattern behind it. It can pop up on the most popular sites as well as on the least ones. Heck, I’ve gotten it on here, on our website, and I can assure you our SSL is up to snuff.

As far as the reason that Google sometimes says “This site can’t provide a secure connection” is concerned, it’s almost impossible to pin it down to a single cause. From an issue as trivial as an incorrect date to a perplexing server issue – it could be anything.

Let’s leave the diagnostic part aside for a moment and focus on what you’re here for – the treatment.

Here’s a quick, troubleshooting guide to fix ERR_SSL_PROTOCOL_ERROR on Google Chrome. If one doesn’t work, try the next one. Sooner or later, you should get rid of this issue.

Fix ERR_SSL_PROTOCOL_ERROR by setting the correct Date & Time
Sounds too obvious, doesn’t it? Well, most of the time, the simplest solution to a problem is the correct one. In this case, incorrect date & time settings might be causing trouble for you. So, make sure that your system isn’t lagging behind or running ahead.

Fix ERR_SSL_PROTOCOL_ERROR by clearing Chrome’s Browsing Data
From one obvious solution to another.

If you already have the correct date & time, it’s time to clear Chrome’s cache and cookies. To do so, press Ctrl + Shift + Delete and erase your browsing data. Even if this hasn’t fixed the “This site can’t provide a secure connection” error, we recommend clearing your browsing data on a regular basis.

Fix ERR_SSL_PROTOCOL_ERROR by clearing your SSL State
If neither of the above works, clearing your SSL State is the next thing you should try. Follow the steps below to do so:

  1. First, go to Customize and control Google Chrome, the three dots you see just below the X (close) button.
  2. Now click on Settings.
  3. Scroll down the page and open the Advanced Settings.
  4. Go to Open proxy settings by scrolling down or searching in the search bar.
  5. A window named ‘Internet Properties’ will open up.
  6. Go to the Content window and click on the Clear SSL State Button.
Fix ERR_SSL_PROTOCOL_ERROR by disabling QUIC Protocol
QUIC (Quick UDP Internet Connections) provides a TLS/SSL equivalent connection to Google’s servers. By default, the QUIC protocol is enabled in Chrome. To disable it, copychrome://flags/#enable-quic and paste it into the address bar, hit enter. On top of your screen, theExperimental QUIC Protocol would have been set as Default. Disable it and relaunch Chrome.

Fix ERR_SSL_PROTOCOL_ERROR by checking your Antivirus Settings
Warning: This step isn’t entirely safe as it allows the older, insecure SSL/TLS protocols that some of the websites still use.

You might not know this, but your Antivirus software keeps an eye on the web pages you visit and protects you against any threats they may pose or contain. It does this by checking the SSL/TLS protocol a website uses. Upon finding the protocol to be unsafe and outdated, it prevents you from visiting the site.

There isn’t any one particular way to change the settings for all Antivirus software as the UI and settings differ from one software to another. You’d have to find and see if it’s scanning the SSL protocols. If it does, disable it and see what happens. If the problem persists, revert to the original settings.

Fix ERR_SSL_PROTOCOL_ERROR by Enabling all SSL/TLS Versions – The Last Resort
Warning: This step isn’t entirely safe as it allows the older, insecure SSL/TLS protocols that some of the websites still use.

When you visit an SSL-enabled website, it uses SSL/TLS protocols to communicate with the server. Sometimes, the SSL/TLS version of a website might not be compatible with your Chrome as Chrome doesn’t permit deprecated SSL/TLS protocols to run by default. Therefore, you’d need to change those SSL/TLS protocol settings. Here’s how you can do it:

  1. Click on the three dots you see in the top-right corner of Chrome and click on Settings.
  2. Now scroll down and go to Advanced Settings.
  3. Find the Proxy settings and open it.
  4. Click on Advanced
  5. Scroll down till the Security section comes up. Now make sure that you have checked all SSL and TLS versions.
  6. Click Apply.
  7. Relaunch your Chrome.
We hope that this guide has helped you fix ERR_SSL_PROTOCOL_ERROR or “This site can’t provide a secure connection” messages on Chrome. And if it doesn’t, share your concerns in the comments section and we’ll try to help you out with it.