It happens that yesterday you normally used the Internet, but today you can’t access the network. It would seem that everything is as usual, the login and password have been verified, the computer is being registered, but then a window pops up, in which it displays: “720 error”. This indicates that due to a protocol failure, you cannot access the Internet. Here, most users in the literal sense of the word start to panic. But this is the last thing you need to do, because this “ailment” is easily and simply “cured”, and now we will see how. You will need about an hour of free time, patience and the desire to fix everything, as well as computer skills at the beginner level.
What do you need to do first?
The most important thing is to understand that this error is relatively rare. This is especially true for properly configured Internet connections. Nevertheless, if you are not lucky, then for a start try such basic actions as turning the computer on and off, rebooting the modem, in the end, you can call the support service via the hotline (for free) and leave your request there, after explaining in what's the problem. But one thing is for sure: the trouble is that your operating system somewhere has a “hole”, due to which the connection is distorted, and you, in fact, see the following inscription: “Code 720, connection error”. But do not despair, now we will figure out how to solve it without the help of professionals, which will help us save a little money. To do this, you need a little patience.
What causes the error?
In all cases, this ailment occurs due to incorrect PPP protocol settings for your Windows operating system. It is worth noting that it does not matter which OS you use, be it Vista, 7 or even Win8. In 100% of cases, PPTP protocols are either to blame, which are either incorrectly configured or absent altogether, which, by the way, also occurs. Immediately, we note that without certain knowledge it is quite difficult to fix the problem, so it is strongly recommended that you read this article to the very end. The easiest way to solve the problem is to reinstall the operating system, which will most likely help. But the fact is that on the new platform you can also encounter the fact that the 720 error when connecting to the Internet will not go anywhere, so let's leave the reinstallation to the very end.
Code 720 appeared: connection error, how to solve the problem?
Even a beginner can handle this method. Here practically nothing is required of you. It is necessary to reset the settings to those that were in the factory. To do this, click "Start", then "Run" and type cmd. After that, a phrase is written as follows: netsh int ip reset resetlog.txt. And we need to introduce another similar phrase: netsh winsock. The next step is to restart the personal computer. Try connecting to the internet. Most likely, the error will disappear, but it is likely that most programs that require an Internet connection will stop working. You will need to reinstall them. The thing is that the commands you entered rewrite part of the registry. Now let's move on.
Reinstall the network card driver
This is already a little more complicated, so read carefully, repeat - and everything will work out. Again, we will need to rewrite the registry a bit, only this time in a different way. We go to the "Start", "Run", enter the regedit command. Here we completely delete partitions that are somehow related to wincock. We need to erase the entries: HKEY_LOCAL ... wincock and HKEY_LOCAL ... wincock 2. Restart the computer and try to connect to the network. Please note: everything that you delete will be automatically restored by the system, so you can not worry again. If everything worked out, then you will no longer see the inscription: "Error 720". Windows 7, 8 may require a change to the nettcpip.inf file.
“Error 720”: “MTS” modem and “Beeline”
As practice shows, quite often a similar problem occurs on the above devices. It should be noted that the error can be fixed in the same way as for a regular modem. Therefore, before contacting support, try the above steps. Finally, go to the Windows / inf folder. Find the nettcpip file there. Go into it and find the line TCPIP has properties and after the equal sign write 0x80. Save the changes and close the file, also in the settings you can check the box next to "read-only". After rebooting, you can delete and then reconnect. To do this, go to “Control Panel”, “Network Connections” and select the “Add and Install” protocol. Use a previously edited document as a disc. Reboot the PC, “Error 720” “Megaphone” -modem should be solved.
We carry out diagnostics
In some cases, before uninstalling or reinstalling something, it is necessary to perform a diagnosis that will accurately show what exactly the problem is hidden. Go to the "Start", then "Run", and then in the field we enter Command. After that, write Netdiag. As a result, you can observe the results for several network components. This will also include Winsock. To get the data we need, we need to write the following: / v: Netdiag / test: winsock / v. If you did not receive any errors during the execution of the action, then everything is in order. If there are problems, then you need to restore the damaged configuration. How to do this, we have already said. As you can see, the “720 error” of the PPPOE connection is solvable, but efforts must be made for this. With a probability of 90%, your problem will be solved, but it is quite possible that you will have to reinstall the operating system.
What else to look for?
As already noted above, it is likely that none of the above will help. In this case, we can recommend trying to remove and install the TCP / IP protocol. It is likely that this will correct the situation. In any case, reinstalling the operating system should be performed only after all the options have been tried and nothing helped. But then again, using a Windows license minimizes the risk of a “720 error”. Moreover, you can be sure that everything will work. The same applies to the modem. If it was configured by a professional, and the OS is licensed, then with 100% probability you will not receive such errors. Of course, at any time you can look at the log file, which will tell you what exactly the catch is, it can be uploaded to the forum where experts gather, and they will probably find the optimal solution there. The name of the PPP.log file, it is stored in% systemroot% / tracing.
Conclusion
Perhaps in this article it was said about everything that can help you. The only thing we have not mentioned yet is a reliable antivirus program. The fact is that any malware that uses an Internet connection can violate it. Therefore, you can try everything, but apart from reinstalling the operating system or elementary removal of the virus, nothing will help. In any case, before you “demolish” Windows, try everything that was recommended in this article; if all else fails, contact the support service or call a specialist at home. The latter will solve all your problems associated with incorrect protocols that do not allow access to the network. It will cost depending on the complexity of the problem, as a rule, 300-400 rubles. If you can cope with the problem yourself, then these funds can rightfully be considered savings. Moreover, when the error reappears, you will already know what to do.