WinHTTP Web Proxy Auto-Discovery Service - Windows 10 Service
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.
This service also exists in Windows 11, 8 and Vista.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | WinHTTP Web Proxy Auto-Discovery Service |
| Service name: | WinHttpAutoProxySvc |
| Type: | share |
| Path: | %WinDir%\system32\svchost.exe -k LocalServiceNetworkRestricted -p |
| File: | %WinDir%\system32\winhttp.dll |
| Error control: | normal |
| Object: | NT AUTHORITY\LocalService |
| Privileges: |
|
Default Behavior
The WinHTTP Web Proxy Auto-Discovery Service is running as NT AUTHORITY\LocalService in a shared process of svchost.exe. Other services might run in the same process. If WinHTTP Web Proxy Auto-Discovery Service fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the WinHttpAutoProxySvc service has failed to start.
Dependencies
WinHTTP Web Proxy Auto-Discovery Service is unable to start, if the DHCP Client service is stopped or disabled.
If WinHTTP Web Proxy Auto-Discovery Service is stopped, the IP Helper service fails to start and initialize.
Restore Default Startup Type of WinHTTP Web Proxy Auto-Discovery Service
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreWinHTTPWebProxyAutoDiscoveryServiceWindows10.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the winhttp.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows 10 installation media.