It is possible that your device saved some corrupted DNS settings, which may be responsible for the ERR_INTERNET_DISCONNECTED error code. In order to fix it, you need to flush the DNS.
If you are not sure how to flush the DNS, feel free to consult the don't know how to flush the DNS guide.
If you get the ERR_INTERNET_DISCONNECTED error when you try to surf the net, the first thing you should try is to restart the your device, because another program, or an error in the operating system itself may be the reason for this error.
If restarting didn't work, check the other solutions.
There is a great possibility that the reason for ERR_INTERNET_DISCONNECTED error message are broken cookies and cache files, which have been accumulated to your device. In order to fix this error code, you need to clear the cache files, the cookies and unnecessary data.
To learn how to clear the browser's cache (and cookies), check the don't know how to clear the cache solutions and don't know how to delete browser cookies guide.
Maybe a virus your computer picked up is the reason why you get the error code ERR_INTERNET_DISCONNECTED. If you can browse the internet on another computer or mobile device connected to the same network, or there isn't an unresponsive program that might be causing this issue, there is a good chance that your computer is infected with a malicious software. In this case, scanning for and removing the malicious software is all you need to do to get rid of the error code.
The Viruses / Spywares / Malware guide is he place where you can find more details on how to scan for and remove malicious software, as well as to minimize the risk of future threats.
Maybe the router (and/or the modem) itself is the reason why you get this error message on your device. Try restarting it (them), by unplugging them from the power cord and plugging them back in after 5 minutes.
Maybe the ISP/Operator is the reason behind the ERR_INTERNET_DISCONNECTED error message. Contact them and let them know about this issue and if it turns out to be on their end, they will fix it.
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.