How to Fix ERR_SSL_PROTOCOL_ERROR on Google Chrome?
What does ERR_SSL_PROTOCOL_ERROR Mean and How to Fix it?
- What does ERR_SSL_PROTOCOL_ERROR Mean and How to Fix it?
- Why Chrome Displaying ERR_SSL_PROTOCOL_ERROR?
- What are the Reasons behind ERR_SSL_PROTOCOL_ERROR in Google Chrome?
- Solution #1 Check the Date or Time of Your System
- Solution #2 Clear Your Browsing Data
- Solution #3 Clear Your SSL State
- Solution #4 Disable QUIC Protocol of Google Chrome
- Solution #5 Check Settings of Your Installed Antivirus Software
- Solution #6 Check Firewall Settings
- Solution #7 Remove or Disable Extension
- Solution #8 Remove the Hosts file
- Solution #9 Adjust Your Internet Security and Privacy Level
- How to Fix ERR_SSL_PROTOCOL_ERROR in Android Devices
Why Chrome Displaying ERR_SSL_PROTOCOL_ERROR?
What are the Reasons behind ERR_SSL_PROTOCOL_ERROR in Google Chrome?
- Invalid System Time
- Firewall blocking the website or IP address
- Website could be blacklisted in the Hosts file
- Browser extension blocking the website
- Cookies and Cache not cleared for a long time
Solution #1 Check the Date or Time of Your System
The validity of the Certificate is an essential factor for the authentication process, which means also keeping tabs on the time it was signed and when the expiration will occur. So, any issue with your system’s time or date can cause this error at the time of authentication.
Solution #2 Clear Your Browsing Data
- Launch Google Chrome
- Press Ctrl + Shift + Delete
- Set Time Range to “All Time“
- Check the checkbox for “Cookies and other site data”
- Check the checkbox for “Cached images and files“
- Hit Clear Data Button
Solution #3 Clear Your SSL State
- Go to Start Menu > Control Panel > Network and Internet > Network and Sharing Center
- Now click on Internet Options from the bottom-left corner.
- A new Internet Properties window will appear.
- Now move to the Content tab and click on Clear SSL State.
Again, restart Chrome and check err ssl protocol error if net::ERR_SSL_PROTOCOL_ERROR is still there.
Solution #4 Disable QUIC Protocol of Google Chrome
- In your chrome browser URL, type chrome://flags/#enable-quic and hit enter.
- Experimental QUIC protocol would probably have been set as Default. Change it to Disabled.
- Now go to the bottom of the page and click on RELAUNCH NOW
Solution #5 Check Settings of Your Installed Antivirus Software
Also, there are not any fixed steps to change the settings of your installed Antivirus, as it differs depending upon the UI of your installed antivirus software. If you can find out in your Antivirus software, then carefully make the change and see how it works. If the problem continues, then it’s recommended to reverting the changes you made in the settings option.
Solution #6 Check Firewall Settings
Solution #7 Remove or Disable Extension
Solution #8 Remove the Hosts file
- Press Windows + R, type in C:\Windows\System32\drivers\etc & hit enter button
- You will find a file named hosts. Delete it.
Solution #9 Adjust Your Internet Security and Privacy Level
Follow Below Steps to Lower the Level:
- In the search bar of your computer, type “Internet Options”.
- Once the “Internet Properties” opens, navigate to the Security tab and look at the provided slider. If the slider is too high, then bring back to the Medium level (in the middle) and click on the “OK” button.
We hope you’ve finally got rid of ERR_SSL_PROTOCOL_ERROR in Chrome.
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