Since TLS 1.3 is disabled by default, it needs to be manually enabled
for each browser. Currently, Internet Explorer 11 and Edge do not
support TLS 1.3 but will be supported in the next updates to come,
according to sources from Microsoft Insider Program.
If you wish to enable the experimental version, follow the steps below
to enable it on Microsoft Edge as well as Internet Explorer.
- Type inetcpl.cpl in Run and press Enter.
- In Internet Properties, go to the Advanced tab and scroll down
to the very bottom. Check the box next to Use TLS 1.3.
Click on Apply and Ok. Reboot your computer for the changes to
The Edge browser can now be used to connect to any website or
server running TLS 1.3. This configuration also takes place on Internet
Explorer simultaneously as well.
You can also disable TLS 1.3, or any other version by navigating to
the Internet Properties window and unchecking the corresponding
Enable TLS 1.3 on Google Chrome
In the case of Google Chrome, a flag needs to be set to enabled in
order to run TLS 1.3.
Write the following in the address bar on Google Chrome:
Search TLS in the search bar.
- In the drop-down menu next to TLS 1.3 hardening for local
anchors, select Enabled.
Enable TLS 1.3 on Mozilla Firefox
Enter the following in the address bar on Firefox:
If you are presented with the Proceed with caution page,
click Accept the risk and continue.
There will be a search bar at the top of the page. Enter the
Now double-click the security.tls.version.max and change the
value to 4.
Relaunch the browser and you should now have TLS 1.3 running
on Mozilla Firefox.
In case you wish to revert to the settings, just change the value
of security.tls.version.max to 3, and relaunch the browser.