Windows Update Medic Service (WaaSMedicSvc) Defaults in Windows 10

Enables remediation and protection of Windows Update components.

The Windows Update Medic Service does not exist in:

Default Settings

Startup type: Manual
Display name:Windows Update Medic Service
Service name:WaaSMedicSvc
Service type:share
Error control:normal
Path:%SystemRoot%\system32\svchost.exe -k wusvcs -p
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc
  • SeTcbPrivilege
  • SeChangeNotifyPrivilege
  • SeImpersonatePrivilege
  • SeTakeOwnershipPrivilege
  • SeSecurityPrivilege
  • SeRestorePrivilege

Default Behavior

Windows Update Medic Service is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Windows Update Medic Service is started, it is running as LocalSystem in a shared process of svchost.exe along with other services. If Windows Update Medic Service fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the WaaSMedicSvc service has failed to start due to the error.


Windows Update Medic Service cannot be started under any conditions, if the Remote Procedure Call (RPC) service is disabled.

Restore Default Startup Configuration of Windows Update Medic Service

Before you begin doing this, make sure that all the services on which Windows Update Medic Service 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 WaaSMedicSvc start= demand

3. Close the command window and restart the computer.

The WaaSMedicSvc service is using the WaaSMedicSvc.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.