Internet Connection Sharing (ICS) (SharedAccess) Service Defaults in Windows 7

Provides network address translation, addressing, name resolution and/or intrusion prevention services for a home or small office network.

Default Settings

Startup type:Disabled
Display name:Internet Connection Sharing (ICS)
Service name:SharedAccess
Service type:share
Error control:normal
Object:LocalSystem
Path:%SystemRoot%\System32\svchost.exe -k netsvcs
File:%SystemRoot%\System32\ipnathlp.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess
Privileges:
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege
  • SeLoadDriverPrivilege
  • SeTakeOwnershipPrivilege

Default Behavior

Internet Connection Sharing (ICS) is a Win32 service. In Windows 7 it is disabled and therefore it isn't starting. When the Internet Connection Sharing (ICS) service is started, it is running as LocalSystem in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If Internet Connection Sharing (ICS) 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 SharedAccess service is not running because of the error.

Dependencies

Internet Connection Sharing (ICS) is unable to start, if at least one of the following services is stopped or disabled:

Restore Default Startup Configuration for Internet Connection Sharing (ICS)

Before you begin doing this, make sure that all the services on which Internet Connection Sharing (ICS) 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 stop SharedAccess
sc config SharedAccess start= disabled

3. Close the command window and restart the computer.

The SharedAccess service is using the ipnathlp.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.