Solve common HyperTerminal issues with these easy steps

Tashreef Shareef
by Tashreef Shareef
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Fix Hyperterminal problems

HyperTerminal is a popular Windows terminal emulation program. It allows the users to connect through TCP/IP Networks, Dial-Up Modems, and COM ports.

That said, when using HyperTerminal, you may encounter some issues. Some of the most common HyperTerminal issues are:

  • HyperTerminal not opening
  • HyperTerminal does not show text
  • HyperTerminal does not show com port
  • HyperTerminal not sending commands
  • HyperTerminal not receiving data
  • HyperTerminal not responding
  • HyperTerminal not taking keyboard input

In this article, we take a look at a couple of troubleshooting tips to help you resolve the common HyperTerminal issues in Windows.

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How do I fix common HyperTerminal issues?

1. HyperTerminal is not opening

1.1 Check your antivirus

common HyperTerminal issues

  1. Open your antivirus app and disable it temporarily.
    • You can also disable Antivirus from the taskbar.
  2. Right-click on the Antivirus icon and select Disable protection temporarily.
  3. Once disabled, try launching HyperTerminal.
  4. If the issue is resolved, open your Antivirus and make sure you add the program to whitelist.

If you are running an Enterprise version of Windows, you may need to contact your IT administrator to disable the antivirus or add an exception.

Looking to Install Windows Terminal on Windows 10? Check out this article for detailed steps


2. HyperTerminal does not show text

common HyperTerminal issues

  1. Open HyperTerminal.
  2. Click on File and select Properties.
  3. Open the Settings tab.
  4. Click ASCII Setup.
  5. Select Echo Typed Character Locally option and click OK twice.

3. HyperTerminal does not show com port

common HyperTerminal issues

  1. Download this registry file to your computer.
  2. Double-click on the registry file. It will successfully modify the registry files to add the following records:
    • TSAdvertise=dword:00000001
    • AllowTSConnections=dword:00000001
  3. Launch HyperTerminal and check if the com port is visible again.
  4. If the issue persists, open Registry Editor to make sure the correct values are added to the registry.
  5. Press Windows Key + R.
  6. Type regedit and click OK.
  7. In the Registry Editor, navigate to the following path:
    • Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server
  8. Make sure the following values exist:
    • TSAdvertise=dword:00000001
    • AllowTSConnections=dword:00000001
  9. If the values exist, close the Registry Editor and try again.

If you can’t edit your Windows 10’s registry, read this handy guide and find the quickest solutions to the issue.


Can’t access the Registry Editor? Things aren’t as scary as they seem. Check out this guide and solve the issue quickly.


4. HyperTerminal not sending commands

  1. Create a new text file anywhere on your desktop.
  2. Open the newly created text file and write the ASCII command of your choice and save it.
  3. Next, open HyperTerminal.
  4. Name the HyperTerminal session and set the following:
    • BAUD rate 9600
    • Parity to ODD 
    • 8 data-bits
    • 1 stop-bit
    • No Flow Control (when the COM Port setup pops up).
  5. Next, go to File > Properties ASCII Setup.
  6. In ASCII Setup, check the Echo Typed Characters Locally option.
  7. Go back to the main HyperTerminal window.
  8. In the HyperTerminal window, go to Transfer and select Send Text File.
  9. Select the text file you saved on desktop.
  10. You should see the command and the response in the interactive portion of HyperTerminal.

5. HyperTerminal not receiving data

common HyperTerminal issues

  1. Make sure you have configured the flow control in HyperTerminal correctly.
  2. If the issue persists, run the tool in debug mode and check if the print functions are working correctly.

6. HyperTerminal not taking keyboard input

  • HyperTerminal by default has disabled Echo Typed Characters Locally feature.
  • If HyperTerminal is not taking keyboard input, check if the feature is disabled.
  • Click on File and select Properties.
  • Open the Settings tab.
  • Click ASCII Setup.
  • Check Echo Typed Character Locally option and click OK.

In this article, we have covered some of the common HyperTerminal issues and troubleshooting tips to fix the issues. Closely following each of the above-mentioned steps will surely help you solve your issue.

If you have any other issues related to HyperTerminal that is not listed here, let us know in the comments and we’ll make sure to include it.

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