How to Solve Error 633 on Windows 10 PC

“Error 633: Modem (or other connection devices) already in use or improperly configured” is a possible error message you may receive when trying to access the Internet, usually over a dial-up connection. If the modem driver installed on your computer is outdated or incompatible with your operating system, this error message may appear. This guide explains the causes and solutions to this problem. To resolve this error, I recommend that you perform the following steps.

What causes error 633?

There are many reasons that can cause error 633, here are some of the most common ones.

  • Outdated or corrupted system drivers: System drivers are vital for the proper functioning of your computer. If any of these drivers are outdated or corrupted, it can lead to various errors, including error 633.
  • Incompatible modem driver: As I mentioned above, this is one of the most common causes of this error. If the modem driver installed on your system is incompatible with your operating system, you may see this error.
  • Modem already in use: If another program is using your modem, you may see this error. To fix this, you need to close the program that is using the modem and then try to connect to the Internet again.
  • A change in system settings, which usually occurs after an upgrade procedure: A recent change in your system settings can also lead to error 633. These changes usually occur after an upgrade procedure, such as an upgrade from Windows 7 to Windows 10.
  • The same TCP port that the device uses to connect to the Internet is being used by another application or device: If the same TCP port that your device uses to connect to the Internet is being used by another application or device, you may see this error.

How to repair error 633

Update the network driver

Updating your network drivers is important if you want to keep your computer connected to the internet. Here are the steps you need to follow to update your network drivers on Windows 10:

  1. Open Device Manager by typing “devmgmt.msc” into the search bar.
  2. Expand the “Network adapters” section.
  3. Right-click on your network adapter and select “Update driver.”
  4. Select “Search automatically for updated driver software.” Windows will then search for and install the latest drivers for your network adapter.
  5. Restart your computer for the changes to take effect.

By following these steps, you can ensure that your network drivers are up to date and that your computer can stay connected to the internet.

Reinstall the network driver

  1. Open the Device Manager by holding down the Windows button on your keyboard and typing “Device Manager.”
  2. Find the Network Adapters section and expand it.
  3. Right-click on your network adapter and select “Uninstall.”
  4. Restart your computer. Windows will automatically install the driver for your network adapter.
  5. If that doesn’t work, you can download the driver from your network adapter’s manufacturer’s website and follow their instructions for installing it.

Reserving the TCP port

In order to ensure that your computer is secure and that all of your data is protected, it is important to reserve the TCP port on Windows 10. By taking a few simple steps, you can make sure that your computer is safe from potential attacks. Here’s how to reserve the TCP port on Windows 10:

  1. Go to the Start menu and type in “cmd.”
  2. Right-click on the Command Prompt icon and select “Run as administrator.”
  3. In the Command Prompt window, type in “netsh int ipv4 set dynamicport tcp start=1025 num=64511” and press Enter.
  4. Close the Command Prompt window.

By following these steps, you can be confident that your computer is safe from harm. Taking a few minutes to reserve the TCP port on Windows 10 is well worth the peace of mind it will provide.

Use the network adapter troubleshooter

Windows 10 has a number of built-in troubleshooters designed to help users fix common problems with their computers. One of these troubleshooters is the network adapter troubleshooter, which can be used to fix problems with your computer’s network adapter. Here’s how to use the network adapter troubleshooter on Windows 10:

  1. Open the Settings app and go to Update & Security > Troubleshoot.
  2. Under “Get up and running,” select Network Adapter.
  3. Click Run the troubleshooter.
  4. Follow the prompts to complete the troubleshooter.

The network adapter troubleshooter can help you fix a variety of common problems with your computer’s network adapter, including driver issues, connection problems, and more. Give it a try the next time you’re having trouble with your network adapter and see if it can help you fix the problem.

Perform a system restoration

System restore is a process that takes your computer back to an earlier point in time. This can be useful if your system has become unstable or if you’ve installed a program that is causing problems. Restoring your system will not affect your personal files, but it will remove any programs that were installed after the restore point was created.

  1. To perform a system restore, open the Start menu and type “System Restore.”
  2. Select “Create a restore point” from the results.
  3. Click the “System Restore” button. If you are prompted for an administrator password or confirmation, enter the password or provide confirmation.
  4. Choose the restore point that you want to use and click “Next.”
  5. Confirm that you want to restore your system to the selected restore point and click “Finish.”
  6. Your system will restart and the restoration process will begin. Once it is complete, your system will be rolled back to the selected restore point.

Frequently Asked Questions

There are a few different ways that you can try to fix Error 633 on your Windows 10 PC. You can try reinstalling the network driver, reserving the TCP port, or using the network adapter troubleshooter. If those methods don't work, you can also try performing a system restore.

The error code 633 is a Windows error code that indicates a problem with the network adapter. This can be caused by a variety of issues, including driver problems, connection problems, or software conflicts.

Error 633 can occur for a variety of reasons, including driver problems, connection problems, or software conflicts. If you're seeing this error, it's likely that there is an issue with your network adapter.