Transport Layer Security (TLS) 1.0 and 1.1 have been unsupported for some time and were disabled in Windows 11 Insider Preview builds starting in September 2023, as well as in future Windows OS releases. However, if you’re using an older version of Windows, you can manually disable these protocols.
TuringSign’s DV, OV, and EV TLS/SSL Certificates automatically come with TLS 1.2 and 1.3, it is worth taking a look at the product comparison with their specs before checking this guide. Ensuring that your web browser has TLS 1.2 and 1.3 activated is crucial for maintaining secure internet communications.
Here are the ways you can verify and enable these protocols across different browsers:
Google Chrome
1. Access Settings:
- Open Chrome.
- Click on the three-dot menu in the upper-right corner (Alt + F) and select Settings.
2. System Settings:
- Under the System section, click on Open your computer’s proxy settings.
3. Internet Properties:
- This will open the “Proxy” settings page on your Windows.
- Go back/ Click the “Network & internet” tab on the left side
- Navigate to the “Advanced network settings” at the bottom
4. Enable TLS:
- In the Advanced network settings list, scroll down and click the “Internet options“
- Click the “Advanced” tab on the far right, scroll down, and ensure that Use TLS 1.2 and Use TLS 1.3 are checked.
- Click Apply, then OK.
5. Restart Chrome:
- Close and reopen Chrome to apply the changes.
Mozilla Firefox
1. Access Configuration:
- Open Firefox.
- In the address bar, type about:config and press Enter.
- A warning page may appear. Click Accept the Risk and Continue.
2. Modify TLS Settings:
- In the search bar, type tls.
- Locate security.tls.version.min and security.tls.version.max.
- Double-click security.tls.version.min and set its value to 3 to enable TLS 1.2.
- Double-click security.tls.version.max and set its value to 4 to enable TLS 1.3
3. Apply Changes:
- Click the checkmark to save the changes.
- Restart Firefox to apply the new settings.
Apple Safari
For Safari users on macOS:
- TLS Support:
- Safari relies on the system’s SSL/TLS settings.
- Ensure your macOS is up to date to support the latest TLS versions.
- System Update:
- Click on the Apple menu and select System Preferences.
- Choose Software Update and install any available updates.
Verifying TLS Version on a Website
To check which TLS version a website is using:
- Open the website you want to check (ex. www.google.com)
- Click Develop and “Show Web Inspector” or press Option + Command + I
3. Select the website you want to check in the list
4. Navigate to the Network Tab and select the Website Request
5. Click the Headers tab and look for the Security section to see TLS details
Microsoft Edge
- Access Settings:
- Open Edge.
- Click on the three-dot menu in the upper-right corner and select Settings.
- System Settings:
- Scroll down and click on “System and Performance”.
- Click on “Open your computer’s proxy settings“.
3. Internet Properties:
- This will open the “Proxy” setting page on your windows.
- Go back/ Click the “Network & internet” tab on the left side
- Navigate to the “Advanced network settings” at the bottom
4. Enable TLS:
- In the Advanced network settings list, scroll down and click the “Internet options“
- Click the “Advanced” tab on the far right, scroll down, and ensure that Use TLS 1.2 and Use TLS 1.3 are checked.
- Click Apply, then OK.
5. Restart Edge:
- Close and reopen Edge to apply the changes.
- Close and reopen Edge to apply the changes.
By following these steps, you can ensure that your browser is configured to use the latest and most secure TLS protocols, enhancing your online security.
