Web Proxy Auto-Discovery (WPAD) on Windows
If you deployed ETP Client on Windows and the proxy is enabled in ETP policy, the Web Proxy Auto-Discovery (WPAD) protocol must be running as a Microsoft Windows HTTP (WinHTTP) service. WPAD allows a browser to automatically discover a proxy without additional configuration. If this service is disabled, ETP Client cannot function with ETP Proxy.
Before installing ETP Client, make sure the service is running on Windows machines.
Confirm WinHTTP WPAD service is running
- On the Windows machine, open a command prompt with administrator privileges.
Enter this command to check the status of the WPAD service:
sc query winhttpautoproxysvc
Confirm that the reported state is RUNNING. For example, these results should appear.
SERVICE_NAME: winhttpautoproxysvc TYPE : 30 WIN32 STATE : 4 RUNNING (NOT_STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN) WIN32_EXIT_CODE : 0 (0x0) SERVICE_EXIT_CODE : 0 (0x0) CHECKPOINT : 0x0 WAIT_HINT : 0x0
- If the service is not enabled, contact your system administrator to enable it.
- If the service cannot be enabled
and ETP Client is already on the machine, manually delete the
DefaultConnectionSettings registry key value in the following location of the
Windows registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet
If the DefaultConnectionSettings key contains localhost (127.0.0.1) information to ETP Client, it may impact Internet access to other applications in your enterprise, such as Google Chrome or Cisco Webex. For instructions, see Remove DefaultConnectionSettings value in Windows registry.
Remove DefaultConnectionSettings value in Windows registry
- Open a command prompt with administrator privileges.
Enter this command to remove the value
that is associated with the DefaultConnectionSettings key.
reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections" /v DefaultConnectionSettings