How to Fix Connectionfailure Error in Windows - All Methods

Windows is a widely used GUI based operating system. As a Windows user, you may have come across a Connectionfailure error message. This article will help you solve the problem.

Whenever we encounter a problem on a mobile phone or computer, the first step we take is to reboot the device. In most cases this should solve the problem. Reboot the PC, and if this does not help, follow these recommendations in turn. Find out what went wrong on your system. This will help you solve the problem as soon as possible.

Causes of Connectionfailure Error

You may encounter such an error when trying to connect your computer (Windows 7/8 / 8.1 or 10) to the Internet via a broadband connection. According to technical information, the Connectionfailure error is one of the most common in Windows. Perhaps the reason is that you have configured the modem incorrectly, but there may be other factors:

  • Block firewall.
  • Antivirus lock.
  • Parental control settings.
  • File hosts.
  • Problems with the browser.
  • Work on the server.
  • Incorrect DNS settings.
  • Technical work by the provider, etc.

Any of the above reasons may indicate a Connectionfailure error message. Consider the problems and their solutions in more detail.

Ways to solve the error

Before you start looking for another solution and make any changes, first try simple and basic recommendations. Here are some of them: restart your computer and / or modem or any other device to connect to the Internet. These steps are the most basic and initial step to troubleshoot any problems. In most cases, a reboot will fix the error Connectionfailure. If this does not solve your problem, follow these recommendations.

Firewall Blocking

Firewall is used to prevent unauthorized users from accessing files and resources on your computer. Unfortunately, Windows Firewall is not perfect and can harm your computer. The best firewall software is available for Windows, so you can disable it and use other software. Below are instructions for disabling the Windows Firewall and repairing the browser:

  1. Click and hold the Windows and X icon. Scroll up and click the Control Panel.
  2. Click System and Security.
  3. Click Windows Firewall.
  4. Choose to enable or disable Windows Firewall.

  5. Select Disable Windows Firewall (not recommended) for the private and public network settings, and then click OK.

After that, restart the PC and check the network operability. If the problem is not resolved, continue to the next solution.

Disable Antivirus

Beginning with the anniversary update of Windows 10 in the summer of 2016, Windows Defender can actually work together with another anti-virus application. Installing another application does not disable Windows Defender itself, but only its real-time protection component. This means that a third-party application provides real-time protection, but you can still run the scan manually using Defender whenever you want.

If you want to make sure that Windows 10 Defender’s real-time protection is disabled or re-enabled after uninstalling the third-party anti-virus application, click Start, enter Defender, and then select Windows Defender.

  1. In the main Windows Defender window in the upper right corner, click the Settings button.
  2. The "Settings Window" will open. Please note that you can also access them in the “Settings” menu - “Updates and Security” - “Windows Defender”. Just make sure the Real-time Protection switch is set the way you want.

    The "Real-time protection" switch is set

There is one more thing you need to know about protecting Windows 10 in real time. If you disable it and you do not have another anti-virus application installed, Defender will automatically turn on real-time protection when Windows restarts. This will not happen if you use a third-party anti-virus application. To disable scanning and blocking the network, you can simply exclude the entire system disk from the scan.

  1. Go to “Settings” - “Update and Security” - “Windows Defender” and click on the link “Add exception”.
  2. Click the Exclude folder button and select the C: \ drive.

If you have additional disks on your computer, you can also exclude them. Exclusion of these disks is similar to disabling anti-virus protection.

Disable Windows Defender on Windows 7 or 8

In Windows 7 and 8, you must completely disable Windows Defender if you want to run another anti-virus application. You cannot simply disable real-time protection, as in Windows 10. Again, Defender should be automatically disabled when installing a third-party application and re-enabled if you uninstall this application later.

  1. To open Windows Defender, click Start, enter Defender, and click Windows Defender.

  2. Go to the “Tools” page in the menu, and then click the “Options” link.
  3. Click the “Administrator” tab in the left pane, and then select the “Use this program” checkbox as you see fit. When you're done, click the Save button.

Windows Defender confirms that you have disabled it. Done!

Parental control

Microsoft offers parental control on all of its devices and operating systems so that children cannot access things that are not appropriate for their age. This is a very useful feature, but it can greatly disturb users if it is constantly on. It would not allow an adult who has the right to use every function to access everything. Therefore, turning it off is as important as turning it on.

Different versions of Windows have different programs that support parental control. Consequently, there are different ways to disable them. This article lists all the methods you can use to cancel parental controls in Windows XP, Windows 7, Windows Vista, and Windows 10.

For Windows 7 with parental controls:

  • Click the "Start" button in the far left corner of the taskbar.
  • In the column to the right you will find the control panel. Click on the “User Accounts and Security” heading.

  • Click on Parental Control and disable the feature.

This will disable parental controls, which can be enabled for any user account. Reboot the PC and test the network.

For Windows 7, Vista and XP with Windows Essentials:

  • Go to the Control Panel, as indicated above, and select the "Remove Programs" menu, which will be under the "Programs" heading.
  • In the list of installed programs, find Windows Essentials. Select it and click "Uninstall / Change." This option will be at the top of the list next to the organization.
  • Then uncheck “Family Control” and continue.
  • Restart the system so that your PC adapts the changes you made.
  • Open a web browser and enter // and log in using the account that was used to set up parental controls.
  • To remove yourself from safety, you will first need to remove all children. To do this, click Select child to delete or change its settings.
  • Select children one by one and delete them.
  • Now you need to go back to the main access settings page and select the “Delete” item above the “Adults” section.
  • Select yourself and click delete.

Now your account is now finally free of parental control.

For Windows 10:

  • Open a web browser and enter // in the address bar.
  • On the opened web page, log in to your account.
  • There will be two sections: adults and children. Select the one you want to remove from privacy.
  • If you want to remove yourself, go to the Adults section. However, you will have to remove all the children before you delete yourself.
  • Go to any of the sections, select the account you want to remove from the privacy, and click Delete.

Reboot your PC and check the internet.

Lock from hosts file

If you are using Windows 8, Windows Defender works by default and prevents the hosts file from being modified. You will need to allow editing of this file by going to Windows Defender and following these steps:

  • Go to Windows Defender, move the cursor to the right corner to open the navigation pane.
  • Click the icon that looks like a magnifying glass to start a search.
  • Enter Windows Defender and select it from the list.
  • When Windows Defender opens, click the Settings tab.
  • Then enter the location of the hosts file depending on the location of the Windows installation. Here is the default path: c: \ windows \ system32 \ drivers \ etc \ hosts

  • Click on the “Add” button and you will see that it will be added to the list under the files.
  • Click “Save Changes” in the lower right corner, and then close Windows Defender.

The next step is to edit the file. In accordance with the instructions above, you will need to edit the file as an administrator. Hover over the right side again, and then locate Notepad. Open it as an administrator.

  • Open the file according to the HOSTS file path.

Here at the end of the document you need to add the IP address and URL of the site to which you are trying to access. For example:

  • Make your changes and click “Save” by clicking “File” to open the menu.

This completes editing the HOSTS file in Windows 8.

Editing the hosts file in Windows 10

In Windows 10, before you start making changes to the hosts file, you need to solve a major problem. You will need admin access to make changes. If you have any questions regarding administrator access, refer to the Microsoft Administrator for Local Accounts help or contact your local Windows administrator. In the Microsoft documentation, local accounts mean "on your computer." Follow these steps to quickly and easily modify the hosts file:

  • Log in as an administrator.
  • Right-click the Windows icon in the toolbar.
  • A popup menu will appear. Find Powershell, then click on this option.
  • A pop-up window will appear notifying you whether you want to allow the application to make changes. Click "Yes" to continue.
  • Enter Notepad. Since you are launching Notepad from PowershellAdministrator, it launches the application with the appropriate administrator rights.
  • In the Notepad menu, click File, then click Open. You will need to go to the folder containing the Hosts file. Usually this: c: \ Windows \ System32 \ drivers \ etc \

  • If you have not enabled the display of hidden files in the Windows settings, you will not see anything.
  • Type Hosts, then press Enter. Please note that the file does not have an extension. Since the Hosts file is systemic, it will be hidden if you do not specify the display of hidden documents in the Windows file settings.
  • At this point, you will see the Hosts file. You will need the IP address of the server on which you are trying to specify the URL. Make sure you follow the given example and put a space between the IP address and the domain name you want to use. For example:

Click File, then click SAVE to save any changes you may have made to the file.

As a precaution, close the Notepad window, and then reload the hosts file in accordance with the initial steps and double check that your changes are applied.

Browser problem

The next step is to check the browser settings and eliminate them. The first step will be to restart the PC. In some cases, access to the site may be temporarily blocked, so try to wait or go to the site from another PC.

To resolve the error in Yandex Browser, do the following:

  • Go to Settings-Additional-Personal Data-Content Settings.
  • Check here the following items:
  1. Handlers - Allow sites to process logs.
  2. Plugins - Run plugins for important content only.
  3. Pop-ups - Block pop-ups on all websites.

The next step is to clear the cache:

  • Open Settings-Advanced-Delete Private.
  • In the window that opens, check all the checkboxes and click "Delete history".

Reboot your PC and check network access. Other popular browsers such as Chrome and Opera are configured in the same way.

Works on the server itself

The reason for the lack of access to the site may lie in the server itself. For example, when performing technical work. The only thing that can be done in this case is to contact the support service of the server or resource by email or in social networks. Perhaps support staff will require additional data to help solve your problem.

Reset DNS settings

Some malicious programs make changes to the DNS settings, with the result that the Connectionfailure error occurs. The easiest way to fix it is to reset the DNS settings. This can be done using the command line:

  • Open the menu Run via Start or the key combination Win + R.
  • In the window that opens, type cmd and press Enter. A command prompt opens.
  • Here enter ipconfig / flushdns.

Start the reset process. Wait until it is finished and check the network operability after restarting the PC.

Your provider’s crashes

Another common cause of an error is a problem on the server of your Internet provider. You will not be able to restore access by yourself. Contact the support service by phone or via the feedback form on the site (if you have access to the Internet), and wait for the operator to respond.

TCP / IP reset

An IP address is a unique identifier for your PC on the Internet. IP address conflicts can cause problems when connecting to the Internet. Therefore, if the restart of the system and our other tips do not work, you can try to reset TCP / IP.

Regardless of whether you are using Windows Vista, 7, 8, 8.1 or Windows 10, you can run a single command using the command line, and it will reset TCP / IP:

  • open the CMD with administrator rights, copy and paste the following command:
  1. netshintip reset reset.log.
  2. after entering press Enter.

After performing the above command, restart the PC. Check if the problem with the Internet connection is fixed. If not, proceed to the next solution.

Create a dial up connection

Sometimes your current connection may be blocked or hung during a session. To solve this problem will help create a new modem connection:

  1. Right-click on the dial-up connection, then select "Create a copy" and go to the network setup wizard.
  2. Remove existing compound by following the instructions below.
  3. Go to the Network and Sharing Center. In Windows 10, it is called Network and Internet.
  4. Select Change adapter settings.
  5. Now you can see your modem or modem connection. Right-click on this connection and select Create Duplicate.

You have just created a copy of your existing connection. So now you can delete the old connection and try to connect using the new one.

Reinstall the network adapter

Reinstalling the network adapter is one of the most recommended solutions for the Connectionfailure problem. Uninstall and reinstall the network adapter using the instructions below:

  • Click Win + K and enter devmgmt.msc.

  • You can even type devmgmt.msc directly in the search.
  • Now click on the network adapters.
  • Find the adapter that connects your system to the Internet. Configure the adapter in accordance with the requirements of the provider.

When the system reboots, it will automatically restore the adapter.

Driver update

Continuously updating drivers is also very important. To update the drivers, you need to go to your hardware website and download the latest driver. Or simply install proprietary software from the manufacturer, which will scan your computer and update the driver yourself. Check for a problem after restarting the PC.

Replace the file "RASPPPSE.SYS"

In Windows 7, the default location of the “Raspppse.sys” file is C: \ Windows \ System32 \ Drivers.

  • Rename the file to “Raspppse1.sys” and leave it there.
  • Copy this document from any other installed Windows 7 system.
  • Paste it into your system in the same folder as Raspppse.sys.
  • Reinstall the modem and test the network.

In most cases, one of these tips will save you from the Connectionfailure error. If you have already encountered such a problem or know other ways to solve it, share with our readers in the comments under this article.