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Error 720: A Connection to the Remote Computer could not be Established

Yesterday while starting a dial-up connection on my laptop it showed an error message Error 720: A connection to the remote computer could not be established. While searching for the possible reasons and solution for error 720, I found the following information. Some of the reasons to get this error message are the weak signal, Loose contact of the modem, corrupted TCP/IP protocol, etc. I have troubleshot my dial-up connection and laptop with the information I collected and fixed the error. This tutorial is based on the procedure I followed to fix the problem. If you ever see this error message, I hope the following troubleshooting guide will help you to resolve it.

How to Resolve Error 720

  1. If it is a USB modem, you should unplug and replug the modem. In most cases, the re-connection of the USB modem fixed the Error 720: A connection to the remote computer could not be established

  2. Uninstall and Reinstall TCP/IP:
    Corrupted TCP/IP protocol on your computer may results "Error 720: A connection to the remote computer could not be established" error message while making a dial-up connection. To fix this follow the instructions provided in the link below.
    How to Uninstall and Reinstall TCP/IP Protocol on Your Computer

  3. Update Adapter Driver:
    To fix Error 720: A connection to the remote computer could not be established you may need to uninstall the Ethernet Adapter driver and update it with the latest version. To perform this follow the instructions provided in the link below.
    Uninstall and Update Ethernet Adapter Driver on Your Computer

  4. If the issue persists, you may follow the steps provided in the link below.
    Error 619: A Connection to the Remote Computer Could not be Established

Error 720: A connection to the remote computer could not be established simply vanished once just after a Windows restart. However, I am not sure it will work in most cases.

  1. Error 797: A Connection to the Remote Access Server was not Made
  2. Error 628: The Connection was Terminated by the Remote computer
  3. PING: Transmit failed. General Failure
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In my case, I uninstalled the adapter driver and updated it with the latest version. Once I have updated the Ethernet adapter driver, the issue resolved automatically.

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It is always a good practice to keep the adapters of the peripheral devices connected to your PC. It will ensure the smooth operation of devices.
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How to Uninstall and Reinstall TCP/IP Protocol

On CoreNetworkZ, we have discussed many connectivity issues. One of the many common solutions found in different tutorials is the reinstallation of  the TCP/IP suite. So, we decide to write a supporting article to cover this area. Uninstalling TCP/IP on your computer is another supporting article for our major network troubleshooting guides. Before going to the steps to uninstall TCP/IP protocol, we should understand what is TCP/IP.

TCP/IP is a protocol suite, a combination of a set of protocols which are necessary for establishing communication between computers in a network. Major protocols in TCP/IP suite are:

  • 1. TCP
  • 2. UDP
  • 3. IP
  • 4.ICMP
  • 5. DHCP

In many networking issues, we need to uninstall and reinstall TCP/IP protocol on our computer. To do this, I suggest you follow the instructions provided below. It is important to know that you have to log in to the Windows Administrative account to perform the steps.

Steps to uninstall TCP/IP Protocol
  1. Click on Start and go to Control panel
  2. Open Network and Dial-up Connections or Network and Sharing Center
  3. Open Local Area Connection and Click on Properties
    How to install TCP/IP on your computer

  4. Uninstall TCP/IP: Click on Uninstall button to uninstall TCP/IP protocol on your computer. After this, you should reboot your computer.
    Steps to uninstall TCP/IP

  5. Install TCP/IP: Click on the install button to do this. Do not forget to reboot your computer after completing the steps.
Once your PC is rebooted, a fresh TCP/IP suite will be completely installed. Just like uninstalling TCP/IP Protocol on a Windows computer, the following link explains steps to reset Winsock on your computer.
How to Reset Windows Socket

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In many adapter related issues, we may need to uninstall and reinstall TCP/IP protocol on our computer. Just like this step, one another important step is to delete temp files on our computer. To learn how to do this, follow the link below.
How to Delete Temp Files and Prefetch Folder on Your Computer

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In some cases, right after uninstalling TCP/IP protocol we may need to update the adapter driver on your computer. To learn how to do this, follow the steps provided in the link below.
How to Update Adapter Driver On Your Computer

How to Delete My Yahoo Messenger Account

I believe you heard the news about the closing of Yahoo Messenger public chat rooms. Some of the loyal users of Yahoo messenger service(YM) are angry on it, and one user asked me to share steps to delete YM accounts. Whatever the reasons Yahoo provides an option to delete your Messenger account. However, the important point to remember is you cannot delete YM account alone. The only option is to delete entire features associated.

So I recommend using the different alias if you are no longer interested in disclosing your real ID. If you are determined to delete entire Yahoo account, you can follow the steps provided below.

  1. Go to the Yahoo Account Termination page by click on the link below

    https://edit.yahoo.com/config/delete_user

  2. Login using your username and password

  3. Now you need to verify the termination process by filling your password

  4. Now they will permanently disable your access to this account and put this account in the deletion queue. After 90 days, they will remove your account.

Points to Remember
  1. If you are using any premium service, you have to cancel them before you start the deletion process.

  2. Even if you delete the Yahoo account, it will be still in their server for 90 days

This 90 days delay in complete removal is to prevent users from doing fraudulent activities using their service. For example, if one particular user uses his messenger account to do any malicious or fraudulent activity may close his YM profile after the completion of his task.

 Once his profile no longer exists in the server, he can assure safety from getting caught for his works. However, this 90 days delay is enough for legal authorities to track his user ID and the IP address used to create and manage that ID.

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The above steps are enough to remove your YM profile. If you are looking for services which show whether your current contacts are invisible or offline, click on the link below.

The steps and tools provided in that tutorial will help you understand the current real status of your contacts.
Check Whether Your Contact is Invisible or Offline

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Have you ever think about finding out whether the location mentioned by your YM contact is correct? Theoretically, it is possible to find out the actual location of your contact. To learn how to do it click on the link below.
How to Find the Location of Your YM Contact

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Once I received an error with Yahoo messenger, not related to termination while starting messenger. The below link leads to the solution and reasons for that error.
Runtime Error- has Requested Runtime to Terminate

How to Reset Linksys Router

Though not recommended there are many instances where you may need to reset the network devices on the home network. For example, if you forgot the current router login password, you would not be able to access the configuration page. Linksys router does not come with a password recovery wizard, and the only way to claim access to the setup page is by resetting the current password.

Another reason is to fix connectivity issues due to the faulty configuration, and you are unable to find the exact wrong setting made.

Linksys router comes with a reset button, and it is very much needed if you want to reset the current configuration. In that case, you may need to reset the router to factory default and start it from scratch.

Why Should I Reset Linksys Router

  • Forgot log in password

  • To recover from faulty configuration

  • Part of the firmware upgrading process


Steps to Reset Linksys Wireless Router

  1. Hold the Reset button for 30 seconds by using a pen tip. You can find the reset button on the rear side of the Linksys router.

  2. Make sure Power button, the Internet button, and WLAN button are blinking

  3. After 30 seconds release pen tip from the reset button and wait till all three lights are steady

To learn more about different methods to reset a device, follow the instructions provided in the link below. If you do not know where to find the reset button on a Linksys device, you may have a look at the photos provided below.
How to Reset a Modem

Reset Different Linksys Router Models

  1. Where is the Reset Button on WRT1900ACS Dual-Band Wi-Fi Router

    At the back panel of WRT1900ACS Dual-Band Wi-Fi Router, you can see the reset button. Have a look at the image below.

  2. Reset Linksys Wi-Fi E2500 Dual-Band N Router

    On the rear side of Linksys Wi-Fi E2500 Dual-Band N Router, there is a reset button. You need to follow the same instructions provided above.

  3. Reset Linksys EA8300 Max-Stream AC2200 Tri-Band Wi-Fi Router

    Look at the rear side of Linksys EA8300 Max-Stream AC2200 Tri-Band Wi-Fi Router. You can see a reset button. You need to hold there using a pencil tip for one minute and make sure the lights are blinking.

  4. Reset Linksys EA8500 Max-Stream™ AC2600 MU-MIMO Smart Wi-Fi Router

    You can see the reset button near the power port on EA8500 Max-Stream™ AC2600 MU-MIMO Smart Wi-Fi Router.

    The above image will help you find the reset button on EA8500 Max-Stream™ AC2600 MU-MIMO Smart Wi-Fi Router.

  5. WRT32X Dual-Band Gaming Router

    If you do not know how to reset Linksys WRT32X Dual-Band Gaming Router Designed for Xbox, look at the image below.
    You need to press the button on the Linksys WRT32X Dual-Band Gaming Router with a pencil clip for 30 seconds. Make sure the lights on WRT32X Dual-Band Gaming Router are blinking.

  6. How to Reset Linksys E900 N300 Wi-Fi Router

    You may check the rear panel of E900 N300 Wi-Fi Router.

  7. Reset EA6500 AC1750 Dual-Band Wi-Fi Router

    Look at the image below. You can see the reset button on the back panel of Linksys EA6500 AC1750 Dual-Band Wi-Fi Router.

  8. How to Reset EA6100 AC1200 Dual-Band Wi-Fi Router

    To reset EA6100 AC1200 Dual-Band Wi-Fi Router, you need to hold the reset button for 20 seconds with a paper clip.

  9. How to Reset Linksys WRT54GL WiFi Router

    In order to reset WRT54GL, you need to press the reset button on the back panel. Have a look at the position of reset button on WRT54GL.

  10. How to Reset Linksys EA5800 AC1000 Dual-Band WiFi Router

    The location of reset button on Linksys EA5800 AC1000 Dual-Band WiFi Router is at the bottom. Have a look at the screenshot given below.

    Location of reset button on Linksys EA5800 AC1000 Dual-Band WiFi Router is marked with a yellow arrow.

After resetting your Linksys router, you need to reconfigure it. It is because while resetting the previous configuration saved will be removed. So to reconfigure it, follow the instructions provided in the link below.
How to Setup Linksys Wireless Devices

Recovering Lost Linksys Router Password
While I was working as a network support engineer for SOHO department, I had received many queries related to the recovery of Linksys router passwords. The real problem with Linksys router is that if we lost the custom password set, there is no way to recover it.

The only option remains is to reset the device and reconfigure it from the beginning. If you have lost the login password of your Linksys router, I suggest you follow the instructions provided in the link below.
I Lost Router Login Password

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One of the common troubles users see after resetting a Linksys router is the problem with playing online games and the working of Internet programs. It is because the previously opened ports are again blocked. To fix it, we need to open the same ports again. The following link leads to the steps to port forwarding.
How to Open Ports on Linksys Firewall