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 of TCP/IP Registry Compatibility

Before you begin doing this, make sure that all the services on which TCP/IP Registry Compatibility 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 commands below, paste them into the command window and press ENTER:

sc config tcpipreg start= auto
sc start tcpipreg

3. Close the command window and restart the computer.

The tcpipreg service is using the tcpipreg.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.