What is "Network Access Protection Agent" in my Windows XP service list? And how is "Network Access Protection Agent" service related to qagentrt.dll?

"Network Access Protection Agent" is a Windows XP service that "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." "Network Access Protection Agent" service is provided by qagentrt.dll DLL file.

Detailed information on "Network Access Protection Agent" service:

Service name: napagent
Display name: Network Access Protection Agent
Execution command: C:\Windows\System32\svchost.exe -k NetworkService
Start type: Manual
Service status: Stopped
Dependencies:
   Remote Procedure Call (RPC)

"Network Access Protection Agent" service is provided by a DLL file called: qagentrt.dll:

Name: qagentrt.dll
Location: C:\Windows\System32\qagentrt.dll
Description: Quaranttine Agent Service Run-Time
File version: 6.1.7601.17514
Size: 322 KB (330,240 bytes)
Modified: Saturday, November 20, 2010, 7:20:57 AM

Disabling "Network Access Protection Agent" service should not cause any issues when running Windows XP system.

⇒"svchost.exe -k NetworkService" Services on Windows XP

⇒⇒Windows XP Services Tutorials