TCP/IP Registry Compatibility (tcpipreg) Service Defaults in Windows 7

Provides compatibility for legacy applications which interact with TCP/IP through the registry. If this service is stopped, certain applications may have impaired functionality.

Default Settings

Startup type:Automatic
Display name:TCP/IP Registry Compatibility
Service name:tcpipreg
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tcpipreg

Default Behavior

TCP/IP Registry Compatibility is a kernel device driver. In Windows 7 it is starting automatically on the operating system startup. If TCP/IP Registry Compatibility 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 tcpipreg service is not running because of the error.


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

Restore Default Startup Configuration for TCP/IP Registry Compatibility

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_tcpipreg_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The tcpipreg service is using the tcpipreg.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.