WinHTTP Web Proxy Auto-Discovery Service (WinHttpAutoProxySvc) Defaults in Windows 7

WinHTTP implements the client HTTP stack and provides developers with a Win32 API and COM Automation component for sending HTTP requests and receiving responses. In addition, WinHTTP provides support for auto-discovering a proxy configuration via its implementation of the Web Proxy Auto-Discovery (WPAD) protocol.

Default Settings

Startup type:Manual
Display name:WinHTTP Web Proxy Auto-Discovery Service
Service name:WinHttpAutoProxySvc
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalService
File:winhttp.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc
Privileges:
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege

Default Behavior

WinHTTP Web Proxy Auto-Discovery Service is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the WinHTTP Web Proxy Auto-Discovery 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 WinHTTP Web Proxy Auto-Discovery Service 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 WinHttpAutoProxySvc service is not running because of the error.

Dependencies

WinHTTP Web Proxy Auto-Discovery Service is unable to start, if the DHCP Client service is stopped or disabled.

Restore Default Startup Configuration for WinHTTP Web Proxy Auto-Discovery Service

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

2. Save the Win7_WinHttpAutoProxySvc_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The WinHttpAutoProxySvc service is using the winhttp.dll file that is located in the folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.