WWAN AutoConfig (WwanSvc) Service Defaults in Windows 7

This service manages mobile broadband (GSM & CDMA) data card/embedded module adapters and connections by auto-configuring the networks. It is strongly recommended that this service be kept running for best user experience of mobile broadband devices.

Default Settings

Startup type:Manual
Display name:WWAN AutoConfig
Service name:WwanSvc
Service type:share
Error control:normal
Group:TDI
Object:NT Authority\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalServiceNoNetwork
File:%SystemRoot%\System32\wwansvc.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WwanSvc
Privileges:
  • SeChangeNotifyPrivilege
  • SeImpersonatePrivilege
  • SeAuditPrivilege

Default Behavior

WWAN AutoConfig is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the WWAN AutoConfig service is started, it is running as NT Authority\LocalService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If WWAN AutoConfig 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 WwanSvc service is not running because of the error.

Dependencies

WWAN AutoConfig is unable to start, if at least one of the following services is stopped or disabled:

Restore Default Startup Configuration for WWAN AutoConfig

Before you begin doing this, make sure that all the services on which WWAN AutoConfig 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 WwanSvc start= demand

3. Close the command window and restart the computer.

The WwanSvc service is using the wwansvc.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.