WinHTTP Web Proxy Auto-Discovery Service (WinHttpAutoProxySvc) Defaults in Windows 8

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:%SystemRoot%\system32\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 8 it will not be started until the user starts it. When the WinHTTP Web Proxy Auto-Discovery Service is started, it runs as NT AUTHORITY\LocalService in a process of svchost.exe, sharing it with other services. If WinHTTP Web Proxy Auto-Discovery Service fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the WinHttpAutoProxySvc service hasn't been started.

Dependencies

WinHTTP Web Proxy Auto-Discovery Service can't start, if the DHCP Client service is disabled or not available.

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

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_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 %WinDir%\system32 folder. If the file is corrupted or deleted, you can put it back in there.