Today, many Windows users do not even suspect that their system has a Microsoft Teredo adapter. They learn about its existence only after it leads to any problems. However, they can be solved independently, without resorting to the help of third parties.
Appointment
The Microsoft tunnel adapter is an invisible tool of the Windows operating system that ensures the correct functioning of the Teredo network protocol . There are analogues of this adapter in other systems, for example, in Mac OS and BSD they are called Miredo. Nevertheless, they have one function - the transmission of information over the network.
The use of the adapter is due to the lack of IPv4 addresses due to the growing number of Internet users. IPv6 is currently successfully replacing IPv4 addresses, and it is Teredo that lets you send IPv6 information packets over IPv4 networks. Also, data transmitted by the tunnel adapter can pass through hardware that operates on NAT technology.
Common problem
The most common problem with the tunnel adapter that users encounter is an error generated by some program and containing the following message: "The device cannot start." In this case, the error code is 10. Often, users will find out about the existence of the Teredo adapter when this error occurs. To solve this problem without consequences, the adapter should be disconnected.
Disabling Teredo must be done as an administrator. If the user does not have such, then he must contact his system administrator to get them, who, however, can himself solve this problem. It is not difficult to determine if there are appropriate rights: if only one account is installed on the computer, then the user is an administrator.
Solution
Finding out if this issue is related to Teredo is easy enough. Right-click on the “Computer” icon, then select “Properties”, then click on “Device Manager”. Find the category of network adapters, click on the plus sign next to it, and the “Teredo ...” item will appear in the drop-down list, next to which there will be a yellow triangle icon, which indicates a problem on the side of the tunnel adapter.
The next step is to launch the command line. Click the "Start" button, then to "Programs", then to "Accessories". Right-click on the "Command Prompt" and select run as administrator. A black window will open.
Enter the text sfc / scannow and press Enter, the driver status check starts. Restart your computer and reopen the command prompt. Type netsh , press Enter. Then enter the text interface teredo set state disabled , press Enter. Next, enter the text interface isatap set state disabled . Another press of Enter again, and the problem is resolved.
other methods
Not all providers have switched to IPv6 technology, and if so, then in this case the command line method will not help. Sometimes the “code 10” problem of the tunnel adapter occurs during a virus attack, then you need to scan the system for viruses. If this does not help, then reinstall the adapter driver.
Open “Device Manager”, right-click on the tunnel adapter and select “Properties”, then click “Driver” and select “Delete”. Restart the computer, download the driver from the manufacturer’s website and install it. If this does not help, then the Windows system must be reinstalled.
Interesting Facts
- Microsoft's teredo server is located here: teredo.ipv6.microsoft.com.
- Using Teredo technology makes the operating system insecure, opening up the possibility of unauthorized access to user data.
- Translated from English, the word teredo means "shipworm." This is the original name for such a protocol, isn't it?
- The Teredo adapter driver is located at the following address: system drive \ Windows \ System32 \ drivers \ tunnel.sys.