Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session) Service Defaults in Windows 7

Microsoft NetbiosSmb Device Driver.

Default Settings

Startup type:Manual
Display name:Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session)
Service name:Smb
Service type:kernel
Error control:normal
Group:PNP_TDI
Path:%SystemRoot%\system32\DRIVERS\smb.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Smb

Default Behavior

Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session) is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session) 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 Smb service is not running because of the error.

Dependencies

Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session) is unable to start, if the TCP/IP Protocol Driver service is stopped or disabled.

Restore Default Startup Configuration for Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session)

Before you begin doing this, make sure that all the services on which Message-oriented TCP/IP and TCP/IPv6 Protocol (SMB session) 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 Smb start= demand

3. Close the command window and restart the computer.

The Smb service is using the smb.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.