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Err Network Changed is an error that is displayed when trying to load any page in the browser. It appears independently of the web browser. The crash can be found in Google Chrome, Internet Explorer and others. All due to the fact that the system cannot establish a connection to the network. The reasons for the error and the ways to fix it will be discussed in this article.

Err network changed – what is this error?

“Err Network Changed looks like you are connected to a different network” indicates that a previously active network has stopped responding. This often happens due to being connected to a different internet channel. There are other reasons for the appearance of a failure: changing the settings of an active connection, disconnecting the cable, etc. In order to return the Internet to normal operation, you need to either completely switch to using another network, or disconnect other connections and correctly configure the current one.

Causes of occurrence

The computer refuses to connect to the remote server for various reasons.

Incorrect operation of the IPv6 protocol

The problem is not caused by the IPv6 protocol itself, but by certain features of its operation. Considering the lack of IPv6 support in most mobile providers and the irrelevance of the cable Internet standard, it can be turned off.

How to disable IPv6:

1. Press Win + R, then write ncpa.cpl and activate the command.
2. Click on the RMB on the active connection and select “Properties”.
3. Find the component “IP version 6” and uncheck the box next to it.
4. Save changes.
5. Disconnect the connection and then enable it again.

Installed virtual adapters

Virtual adapters simulate the presence of a real device. Windows may appear to be connecting to the network through them. Due to confusion, the system issues an error. Virtual Box, Hyper-V, Hamachi, various VPN services can cause the problem. Crashes usually start after installing multiple adapters, updating the OS, or changing network settings.

In order to eliminate the error, it is enough to turn off or completely uninstall such applications and devices. If the problem is fixed, then you can try to reinstall the program or use a more stable analogue.

Incorrect work of the firewall / antivirus

Sometimes antiviruses or firewalls interfere with the connection. For some unknown reason, it seems to them that the connection is infected or may harm the system. First, you should turn off all Internet screens and check if there is access. If the result is positive, then you should reinstall the antiviruses or add the connection to the exclusions.

Technical problems (malfunctions of the router, cable, network card)

The risk of an error due to physical faults cannot be ruled out.

1. Broken router. It does not work correctly, so it cannot establish a connection. It is worth checking the computer directly, this will help eliminate a failure.
2. Damaged cable. You can determine the state of the wire visually, it is enough to consider it well. Fractures, damage to insulation and other defects are unacceptable.
3. Poorly compressed cable. To do this, you need a special tool, which, most likely, the user does not have. You can buy crimping pliers, contact your ISP for help, or try to manually improve the contact. In the latter case, it is enough to remove the cable from the socket and press on the copper contacts with a flat screwdriver.
4. Malfunction of the network card. This component of your computer can be damaged by power surges or lightning strikes. The problem is diagnosed at the service center, although you can take the PC to a friend and check if the device is connected to the network.
5. Damage to internet equipment. Please check with your ISP for availability.

Malicious software

Various malware can disrupt the normal operation of your connection or browser. Obviously, you can’t do without anti-virus software here.

How to fix error err network changed: Windows?

Some recovery methods are briefly described in the previous sections, but there are still a number of working methods.

Cleaning the system from debris

As you work at the computer, a lot of garbage gradually accumulates in the system. Surfing the internet generates hundreds of megabytes of temporary files every day. Errors or conflicts in them lead to the impossibility of connecting to the network.

Attention! Despite the presence of the “Disk Cleanup” tool in the system, it is recommended to use third-party utilities. The built-in cleaner is far from perfect, the same CCleaner does the job much better.

Cleaning instructions:

1. Download app from developer site and install it.
2. On the “Cleanup” page, open the “Applications” tab and set the highlight next to the main elements: cache, history, cookies and data from the last session.
3. Press the “Analysis” button.
4. After scanning is complete, click “Clean”.

Full OS scan for viruses and malware

You can scan your system using Windows Defender, antivirus, or a scanner. Of all the listed types of programs, the latter option is better. It weighs a little, does not conflict with the installed antivirus, and is distinguished by the efficiency of scanning for viruses. The best representative of its niche is Dr. Web.

Important! Before starting the scan, it is worth making a backup of the system. It happens that the antivirus removes almost all exe files. Because of this, it becomes impossible to use Windows normally. Way out of the situation: rollback.

Instructions:

1. Close the browser window.
2. Download and install Dr. Web.
3. Click the Scan button.
4. Delete or move to quarantine dangerous files.
5. Restart your PC and check the result in a persistent web browser.

System / Registry Restore

Windows allows you to roll back to an earlier system state in which there were no connectivity issues.

Recovery instructions:

1. Click “Start”, select “Control Panel” and open “Recovery”.
2. Activate the action “Start System Restore”.
3. Skip the first window, and in the second, select a suitable point.
4. Close the window, turn off and turn on the computer again.

Reinstalling browsers

The procedure for reinstalling web browsers is the same as for other programs. The only difference is that you can save your personal data if you set up server sync. To do this, just log into your browser account (through the settings) and allow synchronization.

For those who don’t know how to reinstall the browser:

1. Click on the PC on “Start” and open “Programs and Features”.
2. Select the problematic browser, then click the “Remove” button.
3. In the next windows, confirm the deletion with personal data.
4. Download the web browser from the official site and start installing it.
5. Log in to the browser, receiving all personal account data.

How to fix a slow Wi-Fi connection?

It is not difficult to fix a slow or intermittent internet connection when switching to Wi-Fi. Two simple and often effective steps: fix the cables and reboot the Wi-Fi router from the button on the back.

There are more difficult situations:

• insufficient power supply, which is solved by replacing its block;
• poor quality firmware. The necessary files are always available on the official website;
• strong heating of the router, where installing a cooler or changing its location to a colder place will help.

What if the browser blocks access to only a few sites?

Blocking of certain web resources is caused by incorrect browser settings. Most likely, this site has been added to the blacklist of the web browser or application. Many add-ons have security features. They check the site against a personal database, blocking loading in case of danger.

What to do:

1. Check the entries in the hosts file. Follow the path: C: Windows System32 drivers etc. Open hosts with notepad. Check for the absence of records blocking access to some sites. If there are any, then delete them and save the file. The pages should now launch.
2. Disable extensions. The desired section is located in different places, but most likely it can be found in the settings. Open the PC add-ons page. They are located to the right of the address bar. Select “Manage Extension” or similar. On the landing page, disable all plugins and test the browser.
3. Turn on VPN. Some sites may be blocked by your ISP, and installing a VPN can help you bypass this problem. It is enough to enter the name Browsec into the search and select the version of the extension for your favorite browser. After installation and activation, the site will work.
4. Just wait. Most likely, the site is undergoing technical work or has been hit by a DDOS attack. As soon as the webmasters restore the work of the web resource, access to it will appear.

Clearing temporary files, removing viruses, restoring the system, basic Wi-Fi router setup are the best ways to get rid of Err Network Changed error. All other options are either too time consuming or lead to the loss of personal data. Given the effectiveness of the methods described, the need for other methods disappears by itself.