The certificates work by encrypting data sent between your system and the site.

This is known as a Certificate Error Navigation Blocked error.

Head to their site todownload the newest version.

Use caution when navigating past warnings like the Certificate Error Navigation Blocked warning.

Bypassing these errors could put your privacy and computer system at risk.

Check to see if the error is justified.

Otherwise, you could access that information in most browsers by selecting thelockin the address bar.

Run a Windows Update.

Sometimes, an outdated piece of software on the computer is to blame.

Try a different web web client.

BothGoogle ChromeandFirefoxhandle things differently than Edge.

You may find that a site works fine on one but not the other.

Update the problem online window.

Edge and IE are updated along with Windows update, but you could easilyupdate ChromeandFirefoxtoo.

Set the Windows system clock.

confirm DNS servers direct the connection to the right website.

Check antivirus and firewall tweaks.

check that that an antivirus program orfirewall isn’t blocking the site.

Without the information it needs, a computer can’t do anything but raise an error.

Loosen the restrictions from your antivirus or firewall to see if that solves the issue.

An alternative, but risky, option is to temporarilydisable McAfee,Norton, orthe Windows firewall.

Re-fire up the antivirus or firewall when you’re finished.

Trusteer Rapport can cause bugs and errors, this one included.

you might remove Trusteer Rapport while keeping your antivirus fully functional.

Change the internet security options.

Lower the level of security in Windows to see if that solves the issue.

Disable certificate mismatch warnings.

This prevents the error from popping up.

This is a temporary fix, and it doesn’t solve the underlying problem.

Many of the possible solutions detailed here also work with other browsers, like Firefox and Google Chrome.

Causes of the Certificate Error Navigation Blocked Error

There are several reasons Certificate Error Navigation Blocked occurs.

Maybe the site isn’t configured correctly, and the web client is doing its job.

There are common causes, though, that you’re free to fix.

Below are a few causes that you may be able to fix.