Network Access Protection Agent (napagent) Service Defaults in Windows 8
The Network Access Protection (NAP) agent service collects and manages health information for client computers on a network. Information collected by NAP agent is used to make sure that the client computer has the required software and settings. If a client computer is not compliant with health policy, it can be provided with restricted network access until its configuration is updated. Depending on the configuration of health policy, client computers might be automatically updated so that users quickly regain full network access without having to manually update their computer.
Default Settings
| Startup type: | Manual |
| Display name: | Network Access Protection Agent |
| Service name: | napagent |
| Service type: | share |
| Error control: | normal |
| Object: | NT AUTHORITY\NetworkService |
| Path: | %SystemRoot%\System32\svchost.exe -k NetworkService |
| File: | %SystemRoot%\system32\qagentRT.dll |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\napagent |
| Privileges: |
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Default Behavior
Network Access Protection Agent is a Win32 service. In Windows 8 it will not be started until the user starts it. When the Network Access Protection Agent service is started, it runs as NT AUTHORITY\NetworkService in a process of svchost.exe, sharing it with other services. If Network Access Protection Agent 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 napagent service hasn't been started.
Dependencies
Network Access Protection Agent can't start, if the Remote Procedure Call (RPC) service is disabled or not available.
Restore Default Startup Configuration of Network Access Protection Agent
Before you begin doing this, make sure that all the services on which Network Access Protection Agent 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 napagent start= demand
3. Close the command window and restart the computer.
The napagent service is using the qagentRT.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 8 installation media.