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Problems with WordPress SSL can drive you crazy sometimes. If you are migrating your WordPress installation to a new server. You will probably have to deal with this problem. This solution is mainly used to fix ERR_SSL_PROTOCOL_ERROR in a WordPress installation without https: // protocol. Suppose first the situation, how you get this problem. First, suppose you use SSL https: // in your old installation. However, after migrating your website to a new installation that does not support the https: // protocol and only works with the http: // protocol. You are going to have this problem ERR_SSL_PROTOCOL_ERROR.

What are the main causes of “ERR_SSL_PROTOCOL_ERROR”?

• Invalid System Time
• Firewall is Blocking website or IP address
• Website is blacklisted in Host File
• Browser Extension blocking website
• Cookies and Cache not cleared since many days/weeks

In order to correct “SSL Connection Error-ERR_SSL_PROTOCOL_ERROR”

Here are some tips to correct “SSL-ERR_SSL_PROTOCOL_ERROR connection error” on Google Chrome.

Method 1: Disable QUIC Protocol

Follow these steps to disable the QUIC protocol.

1. Chrome type: // flags / # enable-quic in the Chrome browser and press Enter
2. You will find a QUIC experimental protocol option with default selection
3. Select Off in the drop-down menu.
4. Click the READ NOW button at the bottom of the page.
5. Restoring Chrome will not make such mistakes.

Method 2: Remove or Modify Host file

Steps to remove or modify the host file.

1. Go to C: \ Windows \ System32 \ drivers \ etc or press the Windows + R keys and press the Enter key
2. You will find the host file.
3. Open it with your favorite text editor, delete the website that your website and IP address are looking for if it is in the host file and save it.

Or

Just delete it

Open the website again, there will be no error.

Method 3: Clear SSL State

Follow the steps below to remove Clear SSL State.

1. Click on the Start menu
2. Go to Control Panel> Network and Internet> Network and Sharing Center
3. In the left sidebar, select Internet Options.
4. The Internet Properties window appears.
5. Option 5.Go to Content
6. Click the Clear SSL State button
7. Alert displays the message “The SSL cache has been successfully deleted”
8. Click OK in the alert window, also click the OK button in the Internet Properties window.
9. Open the site again, there will be no error.

Method 4: Clear Cache and Cookies

You can fix Google Chrome ERR_SSL_PROTOCOL_ERROR by clearing the browser cache and cookies.

Press the CTRL + SHIFT + DEL keys and delete your cache and cookies.

Method 5: Update the System Time

Check your system time, it does not match the current time, Chrome will display this error message. Update your system time with the current time.

Method 6: Remove or Disable Extension

Remove Chrome browsers from unwanted or unused browser extensions, or disable them because they sometimes block a website or part of their content so that Chrome displays this error.