How To Fix Error 651: Re-establish Connection With Simple Hacks

Windows is the most widely used Operating System in the world. If you are a Windows user, then you must have experienced error 651 while working on it. It is a very frequently occurring error that you will encounter on a Windows-based device.

Error code 651 is a problem that you can face while working online. This error occurs when your modem or any other device connected is unable to connect to the OS. 

When this error appears, you get a message on your screen saying: ‘Connection failed with error 651’. If this error keeps appearing constantly, you won’t be able to connect to the Internet through the broadband network. This can hamper your work and create more connectivity problems in the future.

In this article, we will provide you with some easy and simple hacks to troubleshoot this specific error code.

What Can Cause Error 651?

Various reasons can cause error 651 on your Windows device. Before we go into the troubleshooting part, let’s take a look at the reasons behind this error code.

Corruption in Registry Files

One of the main reasons behind this error is corruption in the registry files. Registry files are very crucial for every application on your Windows device. Due to any reason, if these registry files are damaged or corrupted, you might come across error code 651 while connecting to the Internet. 

Conflicted IP address

If the IP address of your router or modem is not entered properly or is not authentic, it might cause a conflict. This conflict can potentially lead to this particular error.

Wrong Internet Configuration

Internet configuration on your devices plays an important part when you want to connect to a network. If this configuration is not properly done or is broken for some reason, it can trigger this connection error on your device.

Misplaced System Files

Error code 651 can take place when the system file is misplaced on your computer.

Possible Fixes For Error 651

Error 651 has become a very commonly occurring issue on Windows-based PCs. It is not that a serious issue to worry about but, should be removed as soon as possible. There are some preliminary fixes like restarting your computer, modem or other Internet devices to eliminate error code 651. 

If you have been encountering this error code while trying to connect to the Internet on Windows, then this article is definitely for you. In this section, we will walk you through the solutions and explain how to fix error 651

Recreate Dial-up Connection

The existing Internet connection you are using might be blocked or non-functional for some reason. In that case, creating a new dial-up connection can be an easy way to bypass this connection error. The first thing you need to do before establishing a new connection is to delete the old one.

Now that you have got rid of the old one, follow these steps to create a new dial-up connection:

  1. At first, you have to go to the ‘Network and Sharing Center’. In case, you are using Windows 10, this option is named as ‘Network and Internet’
  1. Now click on ‘Change Adaptor Settings’ and you will see your modem here.
  1. Right-click on the name of your modem connection and select the ‘Create Copy’ option.

Your new connection is ready now. You can now use this newly created dial-up connection and check if the error still exists.

Disable IPv6

This is probably the easiest and the simplest solution to tackle with error code 651 on Windows device. All you have to do is to turn off the IPv6. This has proven to be effective for several users worldwide. You need to follow these instructions to resolve this error.

Go to the ‘Control Panel’. Click on ‘Network and Internet’ from there. Now, choose ‘Network and Sharing Center’ and select ‘Change Adapter Settings’.

After this, you should right-click on your existing Internet connection. Then, click on the Networking tab and turn off the IPv6 connection.

Alternative Method

Go to the ‘Control Panel’ and choose the ‘Network and Sharing Center’ option. Click on the connection that you are using currently for the Internet.

Now, choose ‘Properties’ and select the ‘Networking’ option. Finally, disable the IPv6 networking option.

Once you have followed these steps and turned off 651, check if the error is still happening.

Reset TCP/IP

This error can take place due to the conflict of your IP address. So, one of the ways to resolve this error is to change or reset the TCP/IP.

You can follow these instructions to change the TCP/IP of your device:

  1. At first, open the CMD window. Make sure you launch Command Prompt with Administrative rights.
  1. Now type the command “netsh int ip reset reset.log” and press the Enter button.

Once you are done with restarting your computer, check whether the problem persists. If the error appears again, you can apply the other alternative solutions.

Perform Clean Boot

You can opt for performing a clean boot on your computer if not sure what is causing this error. To perform a clean boot, you should go through these steps carefully:

Open the ‘Run’ dialog box, type ‘msconfig’ and then press Enter. Go to the ‘General’ tab and then choose the ‘Selective Startup’ option. 

Select ‘Load startup items’. Now from the ‘Services’ option, you need to click on ‘Hide All Microsoft Services’.

Press on the ‘Disable all” button. Finally, restart your computer and check if the error is still occurring.

Reinstall the Network Adapters

Connection failed with error 651’ can be effectively solved, if you uninstall and reinstall the network adapters. Follow these steps to perform this hack:

  1. In the Run dialog box type in ‘devmgmt.msc’ and then click on Enter. Click on ‘Network Adapters’. Now press the ‘+’ sign.
  1. Locate the adapter that you use to connect with the Internet. Right-click on it and then click on the ‘Uninstall’ option.
  1. Once you have removed the adapter, restart the computer. When it turns on, the network adapter will be restored on its own.

Update Drivers

The drivers of your Windows-based computer are quite significant to deal with many errors including error 651. To update the drivers, you can visit the official website of Microsoft and download the latest version to fix the connection issues.

The solutions that we have suggested here are simple, easy-to-apply and have proven to resolve error 651. We hope that these quick fixes will help you to eliminate this error code. Share your feedback in the comment section to let us know how it worked.