Quite often, browsers like Google Chrome or Yandex, when they try to enter some site, give the user an error message net :: ERR_CERT_AUTHORITY_INVALID. Most ordinary users do not know what to do in such a situation, because the message appears again and again. But here everyone needs to be encouraged: this error is mainly characteristic of only one or two resources, and not of all sites on the Internet (although you can also find this). Further, it is proposed to consider the causes of such a failure and the main methods for correcting the current situation. All solutions are extremely simple, and anyone can use them, even remotely having no idea about network settings and organizing access to the Internet. However, we will start with the simplest thing - finding out the causes of this phenomenon, and only then will it decide on the choice of the optimal method for eliminating the failure.
What does the net :: ERR_CERT_AUTHORITY_INVALID error mean?
The appearance of such a message in the browser usually indicates that it worked either its own protection system, or Windows tools, or anti-virus software, which often has the ability to generate false alarms (take the same Avast, which has complaints and unflattering reviews about the Internet just do not count).
But what does the notice itself mean? If we translate the content, so to speak, into normal language, we get an invalid certificate error for the resource that you are going to visit. In browsers with a Russified interface, the error usually looks like the message "Your connection / connection is not secure."
If we talk about the error net :: ERR_CERT_AUTHORITY_INVALID, the certificate is not confirmed upon access, and the protection tools intentionally block the site, isolating the certificate of the user from unverified publishers. Sometimes this makes sense, especially when it comes to confidentiality, but if the user had visited the site without problems before, and the error appeared much later, this is a clear violation of the browser.
Failure net :: ERR_CERT_AUTHORITY_INVALID: how to fix the simplest method?
To begin with, many experts recommend closing the browser and restarting the operating system. It is believed that such failures can be short-term and have no particular relationship to the main problem.
On the other hand, the appearance of the error message net :: ERR_CERT_AUTHORITY_INVALID concerns precisely the impossibility of establishing a secure HTTPS connection (this abbreviation will be written at the beginning of the address bar). Try writing an address starting with HTTP instead. Perhaps access will be obtained.
Date and Time Settings
Oddly enough, the appearance of a failure with a description like net :: ERR_CERT_AUTHORITY_INVALID may also be due to incorrectly set time and date parameters. Most interestingly, changing these options in Windows may not produce a result.
Therefore, you should initially reboot and enter the primary BIOS or UEFI. Usually on the main tab with general parameters and settings there is an item for setting the date and time (something like Standard CMOS Setup). Change the settings in this section, save the changes, and after rebooting, try to check access to the previously requested resource.
Disabling System Protectors
But suppose the net :: ERR_CERT_AUTHORITY_INVALID error message appears again in the browser. What to do in such a situation?
Many experts agree that the installed antiviruses and the built-in Windows firewall (aka firewall) play a significant role here. To get started, simply use the temporary disabling of protection in the antivirus and check the access status.
If this does not help, call the firewall settings either from the standard "Control Panel" or through the "Run" menu with the firewall.cpl command and completely disable it. Of course, the system will issue a warning that, they say, this is not recommended, but do not pay attention.
Check proxy settings
Finally, one of the problems with a failure may be incorrect IPv4 settings. To check them, go to the properties of the network adapter through the network connections section, go to the IP protocol options of the fourth version and disable the use of proxies for local connections, if this option is activated.
It is worth mentioning separately that if your provider does not support IPv6 protocol maintenance, it should be deactivated in the adapter settings by unchecking the corresponding item.
If, even after saving the set parameters and completely rebooting the system, it doesn’t work again, use the IP settings of the fourth version again, but write down the free Google configuration as the addresses of the DNS servers instead of automatically receiving the addresses.
Encryption Setup
The most recent solution to the problem without using cardinal methods such as resetting the system or even reinstalling the system is to change the sharing settings in the Network Control Center.
In this case, we are talking about setting up 128-bit encryption and activating the access point to the network with password protection (the first three positions located a little higher should be completely disabled).
Last Tips
In this case, it remains to say that all the considered solutions, one way or another, eliminate the problems of the described error. It’s just not worth using several methods at the same time, because it’s still not clear what the main failure is related to.
If you want to simplify your task, you can first turn off all browser extensions, but this only works with Google Chrome. Alternatively, you can use a full reset of your browser settings. But, if incorrect TCP / IP parameters are initially set in the operating system in terms of using a proxy, this may not give the desired effect.