Error 619: A Connection to the Remote Computer Could not be Established

Today morning while trying to connect to the Internet, I received following error message Error 619: A Connection to the Remote Computer could not be established, so the port used for this connection was closed. According to Microsoft support, error 619 can occur if your computer has any third party programs which are not releasing the Winsock stack after any type of Internet activity. Some examples of this kind of programs are Download Accelerator Plus and Zone Alarm.

Some support forums tell another possibility which causes error 619. It is the registry error caused by improper uninstallation of previously installed programs on the computer. They recommend registry cleaning to fix this error.

I was using Photon Plus to connect to the Internet. The message box looks like below.

How to Solve Error 619

To fix "Error 619: A Connection to the Remote Computer could not be established, so the port used for this connection was closed", follow the steps below.

1. Reset Winsock
   The first step to troubleshoot this error is to reset the Winsock on your computer. If you do not know how to do it, we have a detailed guide about this procedure.
   
   I suggest you click on the link below to reset Winsock.
   How to Reset Winsock
   
   
2. Disable Firewall and network utility programs installed
   We can resolve the majority of port-related issues by turning off security programs installed on a PC. Examples of Internet-related programs are download accelerator, Firewall, torrent, etc.
   
   If you have any such programs installed on your laptop, I suggest you disable them as the part of the troubleshooting.
   
   
3. Check COM Ports
   We should make sure that the dialer (Internet Access Manager) is using the COM ports. To check this follow the steps below.
   
   
   • Right click on My Computer and Click on Properties
     
     
   • Go to Device Manager
     
     
   • Check Ports (COM & LPT)
     
     
     
     
   I suggest you read the article below to learn more about it.
   How to Change COM Port Assigned
   
   
   
4. Reboot Computer
   After performing the above steps restart your computer.
   
   

I suggest you read troubleshooting guides for some of the related system error codes.

1. Error 718: The Connection was Terminated
   
2. Error 651: The Modem has Reported an Error
   
3. Error 777: Connection Attempt Failed

The most common reason for error 619 is the presence of Internet utilities on a computer.

1. PING: Transmit failed. General Failure
   
2. Differences Between DOS and DDOS Attacks
   
3. Anonymous Proxy Detected, Click Here
   

Once you have rectified the issue by disabling it, you need to read the manual or call respective technical support to learn the correct configuration to avoid error 619.