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Error 633: The Modem is Already in Use or not Configured Properly

"Error 633: The modem(or other connecting devices) is already in use or not configured properly" is a possible error message you may receive while trying to access the Internet mostly using a dial-up connection. If the modem driver installed on your computer is outdated or not compatible with the OS, you may receive this error message. This tutorial explains the reasons and solution to solve this problem. To fix this error, I suggest you try the steps provided below.


The solution for Error 633: The modem is already in use or not configured properly

Troubleshooting steps to solve Error 633: The modem(or another connecting device) is already in use or not configured properly are:

  1. Uninstall and Reinstall Modem Driver: To do this follow the steps mentioned in the link below.
    How to Uninstall and Update Modem Driver installed on Your Computer

  2. Delete all saved dial-up connections and create a new one

  3. Change COM Port Assigned for Modem: To perform this step to resolve Error 633: The modem(or another connecting device) is already in use or not configured properly follow the steps mentioned in the link below.
    How to Change COM Port Number Assigned to a Modem

Just like the Error 633 related to the Dial-up connection on your computer if you are continuously receiving connection prompt, follow the steps mentioned in the link below.
Continues Dial-up Connection Prompt to Connect to a Network

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"Error 633: The modem(or other connecting devices) is already in use or not configured properly" can be resolved by the steps mentioned in this article.

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Here I give a common troubleshooting guide when you are facing issues with accessing the Internet without having any special error message.
I cannot Go Online due to Internet Connectivity Issues

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The message, Error 633: The modem (or other connecting device) is already in use or not configured properly, displayed mostly on computers with default dial-up modem.

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As I explained, the major reason for this message is the multiple Internet connections setup.

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Another important reason is the allocation of the communication port for another software installed on the PC.

How to Change COM Port Assigned to Modem on Your Computer

When you connect a modem to your computer using an Ethernet cable, your PC assigns a COM Port number to establish the communication. In many Modem related troubleshooting guides, we provide the step release or change the COM port number assigned to the modem. Instead of repeating the same steps in multiple guides, it is better to write a supporting article for our other network troubleshooting guides. In this tutorial, we give step by step instructions to release or change the COM Port assigned to the modem on your computer.

Different Methods to Access Device Manager

Device Manager is an important feature in Windows where all hardware devices installed on your computer are listed. From here we can manage, check the status and settings of installed hardware devices. In the device manager, you can update the driver of installed hardware or even uninstall them. This guide explains various methods to access Device Manager on your computer. These methods are from DOS Prompt, Run and GUI. You can use these methods on Windows 10 to Windows XP computers.

  1. Open Device Manager from Command Prompt

    You can open Device Manager straight from the Command Prompt. Follow the steps below to do it.
    1. Click on the Start button and open Command Prompt by typing cmd on the Search windows

    2. Type mmc devmgmt.msc on Command Prompt and Press enter
      How to open DM from the command prompt

    3. The Device Manager will open after you press the enter key.

      PC

  2. Access Device Manager from Run window
    1. open Run

      Either you can open Run from Start menu or by pressing the keyboard combination [Microsoft button] and [R] button together.

    2. Type mmc devmgmt.msc and click OK
      Steps to access DM using the RUN command

      In some Windows versions, you may not see Run in the Start menu. In that case, you can open it by pressing both windows and R keys together. There is a tutorial to bring Run in Start menu. Follow the steps provided in the link below to bring Run in Start menu.
      How to Enable Run Command in Start Menu

  3. Open Device Manager from Windows GUI
    1. Click on Start

    2. Right Click on Computer
      Open the hardware management area

    3. Click on Device Manager link displayed on the left-hand side.
      Manage connected hardware

    4. If you are using Windows XP, you should click on the Hardware tab and then go to Device Manager.
      XP
In this article, we shared different ways to open Device Manager on your computer.

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From here you can check the status of every hardware components installed on your PC.

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Here you can check whether the driver software installed for a specific component is working fine by checking the status code.

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Just like this tutorial, we have many OS related articles. To read them follow the link below.
Important Windows 7 Operating System Tweaks

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In many hardware related issues, we need to access Device Manager to check the actual reason for the issue.

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Following article tells some popular hardware issues and solutions.
Computer Hardware Troubleshooting Guide

Either you Specified a Destination Address that is not Valid or Remote Server is Down

"Error 769: Either you specified a destination address that is not valid, or your remote server is down" is a failure message you may receive when you are trying to go online using a PPPoE connection. According to Microsoft support, this problem may occur if the network adapter installed on your computer is not turned on. There is another alert sharing the same error code 769. Both of them are related to PPPoE.

Though the message displayed by them are different, the solution to fix them is the same. This tutorial explains all possible troubleshooting steps to fix this issue.

  1. Quick Fix

    As mentioned above, to fix Error 769: Either you specified a destination address that is not valid, or your remote server is down, we need to follow the troubleshooting steps provided in the link below. Though it is a different error message, the solution for both error messages is the same.
    How to Resolve Code 769

  2. If the modem configured in PPPoE, you should not configure Internet access in PPPoE on your computer. It is because your computer cannot find PPPoE server when the modem configured in PPPoE, and that may give you the error message Either you specified a destination address that is not valid, or your remote server is down. To check how the modem configured, follow the link below.
    How to Setup Teracom Wireless Modem

  3. There are some tweaks on your computer which can improve the Internet speed irrespective of the connection type you are using. To learn some of these tweaks, follow the link below.
    How to Increase Internet and Download Speed

  4. If your computer is not getting a proper IP address, Windows may assign APIPA. Since APIPA is not a valid IP address, your computer won't go online. To fix this issue click on the link below.
    How to Troubleshoot APIPA on a Wireless Laptop

Conclusion

If you see this alert while trying to access the Internet on your PC, I recommend you to check the status of the adapter. If it is disabled, you must enable it. The below link will help you to perform this step.
Activate NIC On a PC

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The Requested Operation Requires Elevation (Run as Administrator)

If you are trying to access certain files or services those need the elevated permission as a local administrator, you will receive an error message The requested operation requires elevation(Run as administrator). It is due to the continued efforts of Windows to protect the safety of user computer from unauthorized access to important services and applications by adding an extra layer of security which enforces users to run the application with administrative privileges only.

This Windows feature is called User Access Control(UAC) which ensure the user is accessing the program/service with necessary administrative rights.

The error message you may receive if you are trying to access the application without sufficient administrative rights looks like one below.

Error 769: The Specified Destination is not Reachable

Today morning while connecting my PC to the Internet using BSNL modem I received a message 'Error 769: The Specified destination is not reachable' and failed to access the Internet. It seems like my computer was trying to connect through WAN Miniport using PPPoE but failed to do so. So we can confirm this issue is related to PPPoE connection. This message shows additional buttons Redial, Cancel and More info and we can click on any one of them.

I clicked on redial but received the same failure message.

Possible Reasons for Getting Error 769
The major reason for "Error 769: The specified destination is not reachable" is wrongly configured the network connection.

If the network connection is PPPoE for DHCP connection (means DHCP server is enabled on Modem), your computer will not be able to find the PPPoE server and you will get this message. Another possible reason is the disabled network card on your PC.
 769: The Specified destination is not reachable


How to Fix Error 769
To fix Error 769: The specified destination is not reachable you should follow the steps below.
  1. Make sure Network Card is enabled:

    To enable Network Card in your computer follow the steps provided in the link below.
    How to Turn On Network Card on Your Laptop

  2. Remove Extra PPPoE

    Remove any PPPoE connection setup in Network Connection (If you have enabled the DHCP on Modem). There is no need to configure dual PPPoE to go online. If the modem is in PPPoE, you should delete all connections you have created on your PC using the username and password provided from ISP.

  3. Make sure the Modem is working Properly:

    It is advised to do a power cycle as an additional step to troubleshoot Error 769. To do proper power cycle follow the steps provided in the link below.
    How to Power Cycle a Modem

  4. Reset Winsock: To know how to perform this follow the link below.
    Steps to Reset Winsock on Your Laptop

If you receive error 769 even after completing the steps mentioned above, you are advised to uninstall and reinstall adapter driver on your computer.

After uninstalling the currently installed software, you must use the latest version downloaded from the vendor website. To do this follow the steps mentioned in the link below.
Uninstall and Update Driver Installed

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As we explained before, the two major reasons to get Error 769 are faulty network configuration and disabled NIC.

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When you see the error message Error 769: The Specified Destination is not Reachable, you should start with the status of the Network Interface Card on your computer.

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If the NIC is working fine, you should start checking the network configuration. If the issue persists, you should do a power cycle.
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