The ERR_INTERNET_DISCONNECTED is an error message which is very common while surfing the internet. It may pop up even when you may have an active internet connection. If this error pops up, it means that the browser which maybe, Google Chrome or Mozilla Firefox, could not pass through and connect to the particular website you were trying to connect with. It may also occur when your internet connection got disconnected or keeps disconnecting. It may also happen if you do not have a healthy internet connection. In simple terms: your system is unable to access the Internet. However, it can be easily resolved by the methods you will find in this article.
1 Check Your Internet Connection-

The first and foremost thing which you can do is to check whether you have a healthy and working internet connection connected to your Computer. If it does not then make sure it does to fix the error. Make sure the internet plugs are plugged in the right ways and ports. Most of the time errors like this occur because you have forgotten to look after such small things.
2. Uninstall or Disable any Antivirus Software-

Open Start Menu>Control Panel>Program and Features. Select the Antivirus software you want to uninstall from the list. If you want to disable it, then open the program and do it from its settings. Sometimes the security options of any antivirus program in your computer may block the Internet browser to connect to the internet, and therefore such errors occur.
3. Check and Fix LAN (Local Area Network) Settings-
Open Start Menu>Control Panel>Internet Options and go to the Connection tab. Scroll down, select the LAN Settings and click on ‘Use a Proxy Server for your LAN.’ Then check the ‘Automatically Detect Settings.’ Fixing LAN issues resolves the error
4. Turn OFF or Disable Windows Firewall Settings-
Open Start Menu>Control Panel>Windows Firewall. There click on ‘Turn Windows Firewall on or off’ box. Check on ‘Turn off Windows Firewall.’ Then click on OKto save the changes you just made.
5. Clear Browsing Data from your Browser (Google Chrome)-
Open Google Chrome and go to the Menu (click on the three lines on an upper right-hand side). There click on Settings and go to History and click on ‘Clear Browsing History’ and select the data which you want to keep or remove. It may not be the most effective of solutions, but it surely works in many cases.
6. Connect Your ISP (New Connection Wizard)-
To do this, go to the Start Menu and then Control Panel. Open the ‘Network and Internet Connections.’ And click Next to run the process. If your DSL or Cable is connected to the PC and your ISP does not require a username and password, then you may choose not to run the ‘New Connection Wizard.’
7. Setup or Fix Local Area Settings (LAN)-
Go to the Start Menu and open Control Panel. Then go to the ‘Network and Sharing Center’ and click on ‘Change Adapter Settings.’ After doing this right click on the Local Area Connection and click on the Properties. Now, go to ‘Internet Protocol Version 4 (TCP/IPv4)’. Then select ‘Use the following IP addresses’ and ‘Use the following DNS server addresses.’ Then click on OK and save the changes you just made here. Doing this resolves such problems.
So these are most helpful and important methods which you must carry out to fix the problem. Following these methods correctly will help you resolve the ERR_INTERNET_DISCONNECTED error message and you can access the internet again. If all the above methods fail, then there may be a problem with your internet service provider. Thus you must contact and consult your service provider if all else fails.