Sometimes mobile Internet users from Beeline, MTS, Megafon or Intertelecom, when working via a USB modem, may encounter connection error 633 - “A modem or other communication device is in use or not configured.” In the case of a cable connection via an ADSL modem, it also occurs, but much less frequently.

For the first time, I encountered this even when working through Dial-up. At that time, connection error 633 was a frequent visitor to me. The fact is that after connecting to a remote modem of the provider, after some time, due to the poor quality of the line, the connection hung up. Moreover, in Windows XP network connections, the connection status was inactive, but attempts to start it ended with a message that the modem was already in use. Restarting the modem helped, and sometimes I had to restart the computer.

On a more modern and high-speed ADSL connection, or a connection via a 3G / 4G modem, error 633 usually appears as a result of one of the following reasons:

1 - Modem turned off. Try disconnecting the modem and reconnecting. Did not help? Try restarting your computer.

2. - Failure of the modem driver. First, try just unplugging it and plugging it back into the adjacent USB port. If it does not help, try to completely remove the modem driver and the program that came with it. Then reboot and install everything again.

3. - The COM port for the modem is not correctly selected. This happens when one COM port is selected in the modem settings, and another in the device manager. Try restarting Windows XP without disconnecting the modem. Error 633 not resolved? Then manually set the same COM port number both there and there. Only again there is a chance to choose an already busy one.

4. - The installed program - Connect Manager - is already using the modem. At the same time, if you try to start a connection through Windows Network Connections, then most likely you will receive a message that the modem is busy. In this case, you do not need a dialer - the connection is launched by the program. Well, or remove the program, and start the connection manually yourself.

5. - Well, one more reason is a banal human inattention. Several times I met people who, with an already running PPPoE connection, tried to start another one. It is clear that beginners sin with this, but nevertheless, this scenario occurs quite often.

Modem error 633 windows 10

After installing the Windows 10 Creators Update, many owners of USB modems began to receive error 633 when trying to connect to the Internet. This began to appear especially often for those connected via a USB modem. The tips above won't help. Everything is fixed as follows.

Open the Registry Editor (press Win+R and type "regedit"). An editor window will appear. Its structure will be displayed on the left side. Here you need to open a branch:

After that, a list of parameters will appear on the right, in which you need to find the line RequiredPrivileges and double-click on it with the left mouse button:

Here, in the "Value" field, at the very bottom, after all the parameters, write the line SeLoadDriverPrivilege. Click on "OK". If an error appears - do not pay attention and click on "OK" again. After the reboot, check the connection through your modem again.

nastroisam.ru

Error 633: Causes and Solutions

When using modems of any type, a failure with the number 633 (connection error) often appears. And although today the use of modems, to put it mildly, is outdated, nevertheless, for some systems, such a connection may be relevant (for example, when starting a modem on a mobile device in order to access the Internet from a computer). You can fix the problem quite simply.

Error 633 (modem is in use or not configured): the essence of the problem

It is believed that the failure is mainly due to the obsolescence of the service software (drivers) and incompatibility with the control utilities system.

In some cases, error 633 may occur only because the COM port intended for the modem's software connection is busy. Thus, there are three main solutions to this problem.

Error 633. Modem. Drivers

First of all, you should pay attention to the installed drivers. In the simplest case, if error 633 appears, you should not only try to update the drivers through the Device Manager, but also completely remove the device from the system.

After that, you should not specify the installation of drivers from the Windows database, since the system installs, as it seems to it, the most suitable driver. If there is an accompanying disk, it is better to use it. But to install the latest versions, it is customary to use automated search and update programs like Driver Booster or even DriverPack Solution, which are able to identify devices installed in the system and access the manufacturer's resources on the Internet to download the most current driver versions directly.

Removing incompatible software

Sometimes error 633 may occur due to the fact that additional control utilities are simply incompatible with the operating system.

Of course they need to be removed. This is done through the Add/Remove Programs section in the standard Control Panel. If the date of installation of such software at the first connection is known, you can simply sort the programs by this attribute. And it is desirable to delete it in safe mode, using in most cases the F8 key when starting the system.

If the user does not know exactly what needs to be removed, he will have to turn to disabling unnecessary services through the same section, but with a choice of system components. In this case, we are talking about ISS services, where you must first deactivate calls to the FTP server and website management tools.

Port Configuration Issues

But sometimes in cases where error 633 occurs, it happens that at the time of connection the corresponding COM port is occupied by another device or software.

To get rid of this failure, you need to free the port. This is done at the initial stage by deleting all existing connections in the network and Internet section. After that, you need to go to the "Device Manager" and when you click on the network adapter, use the context menu in which the property line is selected. On the "Advanced" tab in the port settings, you should change the port number from the first to the third or from the second to the fourth (you cannot change the odd port to even).

Next, you need to reboot the system and again go to the properties of the installed modem, corresponding, for example, to a VPN connection, and then use the modem polling tool. In most cases, this method fixes the situation when error 633 appears.

It remains to add that these are the simplest methods and solutions, since in each case the problem may have different causes. However, apart from the accompanying software, the first thing to look at is the ports and drivers.

fb.ru

Modem error 633 in windows 10 after system update

The other day they brought me a laptop, which, after installing the update package

Right-click on the Start button to bring up the menu:

Select "Run" to open the following window:

Tip: The Run window can also be called up with the Win + R key combination.

Enter the Regedit command and click the OK button. This will open the Windows 10 Registry Editor, which will help us fix USB Tethering Error 633. Open the branch in the editor:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan

A list of its parameters should appear on the right:

Find the setting called RequiredPrivileges and double-click it with the left mouse button. The Edit Multiline window should appear:

At the very bottom of the list, after the already existing parameters, add one more - SeLoadDriverPrivilege. We press the "OK" button.

Note: Sometimes this may be accompanied by an error - do not pay attention and just click "OK" again in its window.

We reboot and check whether we managed to fix the modem error 633 in Windows 10 or not.

If this action did not help. Then the registry editor opens again and open the branch:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

There you need to create a new multi-string parameter ReservedPorts and double-click on it:

We prescribe the value 1723-1723 and click on the "OK" button. After that, we reboot and check if error 633 appears again or not. Usually after that the connection goes through without problems.

P.S.: If none of the presented tips helped, try completely reinstalling both the modem itself and its proprietary application from Megafon, MTS or Beeline. You can also try to look for a new version of the driver through the Windows Update service.

set-os.com

What to do if the modem gives a connection error 633 windows or 8 windows 7

There are many troubles with connecting to the Internet - one of them is error 633. It can be issued by a beeline modem, mts connection modem, megaphone modem, intertelecom, rostelecom, vpn protocol, pppoe or gprs autodial connection.

It is not worth putting up with this - the mistake needs to be corrected. To begin with, I advise you to turn to the tools of windows or 8 windows 7.

Windows tools, if they don’t fix error 633, will at least indicate in which direction to move.

If the automatic version of the correction did not pass, we take on the manual one. There aren't many reasons.

What to do if the port is busy or incorrectly configured when connecting to the Internet

If your modem gave error 633 and reported that it is used by other equipment or is not configured, this may indicate driver incompatibility with the modem.

To fix this, restart your computer, enter safe mode and open the control panel.

Then go to the "Programs and Features" section and look for applications / drivers that are not compatible with your laptop or computer. By highlighting them, you can delete them.

After that, reboot again to start Windows in normal mode, then open the device manager.

On the contrary, for a modem beeline, mts, megaphone, intertelecom or rostelecom, press the "+" sign and remove the device.

After that, the system should provide you with a list of modems, and you choose your own, enter your data and connect.

What to do if error 633 continues to appear further

Very often, error 633: port is busy or incorrectly configured occurs due to other programs interfering with this process.

The last option is to contact your provider directly: beeline, mts, megaphone, intertelecom or rostelecom.

All operators have free phones and are able to scan the line connecting your computer to their Internet and thereby help you eliminate the malignant tumor of your computer - error 633. Good luck.

vsesam.org

Fix error 633 when connecting to the Internet

Error 633, as a rule, occurs when connecting using a VPN connection - in this case it is never activated, and the system displays a message stating that the modem is already in use. A similar problem is solved in several ways, all of them are quite simple and do not require much time. Let's find out why this problem occurs, and dwell on several options for fixing it.

Notification to users about VPN connection issue

Why does an error message appear?

This happens for the following reasons:

• When a COM port reserved for a specific VPN connection is occupied by another utility.
• When using multiple Internet connections, or if you have saved the previous settings of other providers.
• In the case when the drivers of the equipment using the VPN format connection and Windows itself are incompatible and a conflict occurs between them.

How to fix the error?

Error 633 is removed using the following steps:

If this does not help, let's try using the same mode to change the router drivers. This is done in the following way:

If error 633 still occurs when trying to connect to a network, use the following troubleshooting method.

Freeing up the COM port

Error 633 can be fixed after doing the following:

• Go to the Control Panel, find the Network and Internet section.
• Open the window of all existing network connections, delete them.
• Using the Control Panel, go to the device manager, where the properties of your network equipment are located.
• Right-click Properties, select the "Advanced" tab.
• Select an advanced port setting.
• In the window in the drop-down list, change the port number, if you had the first - change it to the third, the second - to the fourth port. Do not change an even number to an odd number and vice versa.
• Reboot.