How to Check Port 443 Is Open on Windows 10

Port 443 is a commonly used port for secure web browsing, as it is the default port for HTTPS connections. It is important to check if port 443 is open on your Windows 10 computer, as it ensures that you can securely access websites and communicate over encrypted connections. This blog post will guide you through the steps to check if port 443 is open on Windows 10, and provide you with alternative solutions if it is not.

Whether you are troubleshooting connectivity issues or simply want to ensure that your network is secure, being able to check the status of port 443 is essential. By following the methods outlined in this blog post, you will be able to determine if port 443 is open on your Windows 10 computer and take appropriate action if needed.

What’s Needed

• A Windows 10 computer
• Administrator access to the computer

Video Tutorial:

What Requires Your Focus?

• Understanding the significance of port 443
• Checking port 443 status on Windows 10
• Exploring alternative solutions if port 443 is not open

Option 1. How to Check Port 443 via Command Prompt

One of the easiest ways to check if port 443 is open on your Windows 10 computer is by using the Command Prompt. Follow these steps:

1. Press the Windows key and type "Command Prompt". Right-click on the Command Prompt application and select "Run as administrator".
2. In the Command Prompt window, type the following command:
   telnet localhost 443
3. If port 443 is open, you will see a blank screen. This indicates that the connection was successful. Press Ctrl + ] to exit the telnet session.

Pros:

• Quick and easy method
• No additional software required

Cons:

• Only checks port 443 on the local machine
• May not work if Telnet is not installed or enabled

Option 2. How to Check Port 443 via PowerShell

If you prefer using PowerShell, you can also check the status of port 443 on your Windows 10 computer. Here’s how:

1. Press the Windows key and type "PowerShell". Right-click on Windows PowerShell and select "Run as administrator".
2. In the PowerShell window, type the following command:
   Test-NetConnection -ComputerName localhost -Port 443
3. If port 443 is open, you will see the "TcpTestSucceeded" property with a value of "True". This indicates that the connection was successful.

Pros:

• Powerful scripting capabilities
• Convenient for automation or scripting tasks

Cons:

• Requires some familiarity with PowerShell
• May not work if PowerShell is not enabled or restricted

Option 3. How to Check Port 443 via Third-Party Port Scanner

If you prefer a graphical user interface or need to check port 443 on remote machines, you can use a third-party port scanner tool such as Advanced Port Scanner or Nmap. Here’s how you can use Advanced Port Scanner:

1. Download and install Advanced Port Scanner from the official website.
2. Launch the application and click on the "Scan" button.
3. In the "Enter IP address range" field, enter the IP address of the machine you want to scan or leave it blank to scan your local network.
4. Select "Custom" scan type and enter "443" as the port number.
5. Click on the "Scan" button to start the scan.
6. If port 443 is open, it will be listed in the scan results.

Pros:

• User-friendly interface
• Allows scanning of remote machines

Cons:

• Requires installation of third-party software
• Potential security concerns if using unauthorized tools

Option 4. How to Check Port 443 via Online Port Checking Tools

If you don’t want to install any additional software, you can use online port checking tools to verify the status of port 443. These tools allow you to check the accessibility of a specific port from an external perspective. Here’s how you can use an online port checking tool:

1. Open your web browser and search for "online port checker".
2. Choose a reputable online port checking tool from the search results.
3. Enter your IP address or domain name in the provided field.
4. Specify "443" as the port number to check.
5. Click on the "Check" or "Scan" button to perform the port check.
6. The tool will display the results, indicating whether port 443 is open or closed.

Pros:

• No software installation required
• Accessible from any device with an internet connection

Cons:

• Dependent on external online tools
• Potential security concerns if using unauthorized tools

Why Can’t I Check Port 443?

If you are unable to check port 443 using the methods mentioned above, here are three alternative solutions:

1. Use a different port: If port 443 is not open, you can try accessing the website or service using a different port if it supports it. For example, some websites may offer alternative secure connections on port 8443 or 84443.
2. Check firewall settings: Make sure that your firewall is not blocking port 443. You can check the Windows Firewall settings or any third-party firewall software you have installed.
3. Restart or reinstall necessary services: If you are experiencing issues with port 443, it may be due to a malfunctioning or misconfigured service. Restarting the appropriate service or reinstalling it may help resolve the issue.

Implications and Recommendations

• Open port 443 ensures secure browsing and encrypted communication.
• Having port 443 closed may cause connectivity issues and prevent access to secure websites and services.
• Regularly checking the status of port 443 is important for maintaining a secure network.

The Bottom Line

Checking if port 443 is open on your Windows 10 computer is crucial for ensuring secure web browsing and encrypted communication. By following the methods outlined in this blog post, you can easily determine the status of port 443 and take appropriate action if needed. Remember to regularly check port 443 to maintain a secure network environment.

5 FAQs about Checking Port 443 on Windows 10

Q1: Why is port 443 important?

A: Port 443 is important because it is the default port for HTTPS connections, which ensure secure web browsing and encrypted communication.

Q2: Can I use the Command Prompt method on a remote machine?

A: No, the Command Prompt method can only check port 443 on the local machine. For remote machines, consider using other methods such as PowerShell or third-party port scanning tools.

Q3: Are online port checking tools reliable?

A: Online port checking tools can provide a quick and convenient way to check the accessibility of a port from an external perspective. However, it is recommended to use reputable tools and be cautious of potential security risks.

Q4: What if port 443 is closed?

A: If port 443 is closed, it may cause connectivity issues and prevent access to secure websites and services. Consider using alternative ports or checking firewall settings to resolve the issue.

Q5: Can port 443 be used for other purposes?

A: While port 443 is commonly associated with HTTPS connections, it can be used for other purposes as well. Some software or services may utilize port 443 for specific functionalities.