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Posted in General   JANUARY 13, 2022


The most common warning error related to network connections that are not secured properly is the NET::ERR_CERT_AUTHORITY_INVALID.

It has to be mentioned though, that this cannot confirm that the site you are visiting is risky, rather the error might be related to your browsers or the Windows 10 system.

If the website doesn't have an updated SSL certificate or the validity of the certificate is not recognized by the browser then the NET::ERR_CERT_AUTHORITY_INVALID is displayed on the screen to keep you safe.

Here, in this article, we will talk about the NET::ERR_CERT_AUTHORITY_INVALID error, its causes and fixes.


The NET::ERR_CERT_AUTHORITY_INVALID is an error related to the network connection which is also known as an SSL error. If the browsers do not verify the validity of the website's SSL certificate even then this error might be caused.

The websites that are most likely to run into the error are the ones that are not fully secured, haven't set up the certificate or use HTTP.


These are some of the possible causes of the NET::ERR_CERT_AUTHORITY_INVALID error:

  • Outdated or Expired SSL certificate.
  • Self-signed SSL certificate that the browser cannot verify the validity of.
  • If the certificate is generated from sources that are not trustable.
  • Some of the local configuration settings in your browser.
  • Conflict with the antivirus on the system.
  • Because of the browser extensions.
  • If the date and time on the browser are not set correctly.


Mostly you get the NET::ERR_CERT_AUTHORITY_INVALID on Chrome but that doesn't mean that you cannot have it on other browsers. You might find numerous variations of the error on major browsers, but the fixes stated here will work for all the browsers.

1. Reload the Page

Occasionally you might get the NET::ERR_CERT_AUTHORITY_INVALID error automatically as you reload the page after a couple of minutes.

Try reloading the page or opening the website in an incognito or private window, if you see that the error doesn't remain here then the error was probably due to the browser outdated cached version of the page.

2. Clear Cache and Cookies

The NET::ERR_CERT_AUTHORITY_INVALID error is caused by the cache and cookies of your browser if you see that the page is loaded on the incognito or private window.

Clear cache and cookies

You can clear the cache and cookies here to fix the issue. Keep in mind that the way to clear cache and cookies would be different in different browsers.

3. Check the Date and Time

You need to verify the date and time of your Windows computer as this is another reason that could cause the NET::ERR_CERT_AUTHORITY_INVALID error. The browser's skill to check the website's certificate can be compromised if the wrong date and time are set on the computer.

You can follow the given steps to update the date and time:

  • Move to the system tray, then right-click on your system’s time, then choose the option that says Adjust date/time:
  • Locate the option Sync now under Synchronize your clock on the window that pops up and click on it.

Check the Date and Time

  • Windows will now assure that the date and time are set correctly.

Make sure to select the Set time automatically option to prevent this problem in the future.

4. Use a Different Network

If you are using the Public network, then you may get the NET::ERR_CERT_AUTHORITY_INVALID error.

As the traffic wouldn't be routed securely by the Public network, you may get the NET::ERR_CERT_AUTHORITY_INVALID error.

Try accessing the data through your mobile data network if that is the issue and check if you get the NET::ERR_CERT_AUTHORITY_INVALID error.

You can also use a VPN and try it out.

5. Allocate DNS Settings

Try to assign the DNS if you are still getting the NET::ERR_CERT_AUTHORITY_INVALID error.

Follow the steps to do so:

  • Click on the Cortana icon in your Windows 10 system and in the Search box enter Network and Sharing Center.
  • From the left sidebar select Change Adapter Settings
Allocate DNS settings
  • Choose Properties after right-clicking on the currently active Adapter.
  • Then choose Internet Protocol Version 4 and select Properties.
  • After this, click Use the following DNS server address and type Google’s Public DNS servers: 8.8.8, respectively
  • Restart the Windows after saving the settings.

Then, check if the NET::ERR_CERT_AUTHORITY_INVALID error remains.

6. Clear Computer’s SSL State

You have to clear your system's SSL state if the problem remains even after this.

The cached copies of certificates are kept by your browsers from websites so that they won't have to run through the complete verification process every time you access them.

Clear SSL state

And you might start getting this error if the SSL states or cache gets corrupted. Follow the given steps to fix the invalid certificate authority error in Windows:

Click on the button that shows Clear SSL state, then close the window, and then reload the website.

7. Disable Your Antivirus or VPN

Sometimes, your antivirus or the VPN can be the reason for the NET::ERR_CERT_AUTHORITY_INVALID error.

In these situations try turning them off and restarting the computer.

Then check if the problem still remains.

8. Run an SSL Server Test

If the SSL certificate was installed before the error appears, then something might have gone wrong in the setup process.

If you have installed the certificate manually, this might have happened because of that. So you need to check that the certificate is installed properly.

Run an SSL Server Test

There are a few SSL check tools like Qualys SSL Labs that you can use. You just have to enter the domain where the error appears and click on Submit. Then as the results appear after a couple of minutes and you should get an A+ for a perfect score.

If you do not get the perfect score, scroll down and check whether your certificate is trusted or not in the list of certificates.

If not, just install the certificate from trusted sources.

9. Get a Certificate from a Trusted Authority

Getting the SSL certificate from a trusted authority is very important as using a self-signed certificate can cause an invalid certificate authority error.

Look out for the trusted websites offering free certificates but this has to renew often whereas the premium certificates will give you more facilities like encryption for multiple domains, insurance etc.

You have to make sure that you get the SSL certificate from a trusted source.

And make sure that you keep renewing your certificate often if it requires renewal.

The PC Repair Tool ( BEST & SIMPLE)

As we have mentioned in our other articles, you can use the PC Repair tool in case of most errors as it helps you fix BSOD, DLL and other errors on Windows 10.


So that was all about the NET::ERR_CERT_AUTHORITY_INVALID error.

Tell us your experience with it in the comments section.

All the best!