
Solution 3: Update OS and Chrome
Keeping things up to date is vital, especially on systems used to connect to the internet. Because update brings bug fixes and security fixes for the software.
- Update your windows system by going into Settings > Update and recovery > Check for updates.
- For macOS Go to System Preferences > Software update.
- For Linux based systems, use the built-in update manager or run the command “Sudo apt-get install upgrade.” This option may vary according to the distribution.

Now its time to update Google Chrome.
- Go to settings in chrome by clicking in the three dots icon to the top right corner.
- Scroll down and click on About Chrome.
- Once the page opens, chrome will automatically check for updates and notify you if any update is available.

Solution 4: Temporarily disable anti-virus software
Some anti-virus software may prevent you from accessing websites in order to protect you from threats. If you think that the website is safe and this is a false alarm, you can check if the page opens after temporarily disabling the anti-virus software. The process varies according to the antivirus brand or the service provider. Refer to manuals or tutorials available in specific to the brand in order to disable them.
But we can guide you for the common Windows Defender.
- Open windows defender and click on Virus & Threat protection.
- Click on manage settings under Virus and threat protection settings.
- Now disable real-time protection.

Now we have to disable the windows firewall. To do so,
- Open Windows Security app
- From the left side, select Firewall and network protection.
- Disable the windows defender firewall using the toggle switch.

If you cannot open the webpage on any other browser, this means the page has some problems. It has some security-related issues and has to be fixed. There is nothing you can do at this point than to contact the admin and report the issue. Admin may require to install certificates for their websites. It’s their task, you need not worry. Just report and wait.
Conclusion
So, to conclude this article, we can see that solving ERR_CERT_COMMON_NAME_INVALID error in Chrome is easy. But you should have patience and a little bit of time. If you don’t have any time or if the work is very urgent, you can use another browser to get the work done temporarily.
If still these solutions doesn’t work for you, you can contact the developers of Google to get support. Also, try reinstalling the browser again and perform a reboot. Hope you have fixed the issue. Happy web surfing.