Microsoft IPv6 Protocol Driver (TCPIP6) Service Defaults in Windows 7

Microsoft IPv6 Protocol Driver.

Default Settings

Startup type:Manual
Display name:Microsoft IPv6 Protocol Driver
Service name:TCPIP6
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TCPIP6

Default Behavior

Microsoft IPv6 Protocol Driver is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Microsoft IPv6 Protocol Driver fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the TCPIP6 service is not running because of the error.


Microsoft IPv6 Protocol Driver is unable to start, if the TCP/IP Protocol Driver service is stopped or disabled.

Restore Default Startup Configuration for Microsoft IPv6 Protocol Driver

Before you begin doing this, make sure that all the services on which Microsoft IPv6 Protocol Driver depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config TCPIP6 start= demand

3. Close the command window and restart the computer.

The TCPIP6 service is using the tcpip.sys file that is located in the %WinDir%\system32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.