What is "Program Compatibility Assistant Service" in my Windows XP service list? And how is "Program Compatibility Assistant Service" service related to PcaSvc.dll?

"Program Compatibility Assistant Service" is a Windows XP service that "This service provides support for the Program Compatibility Assistant (PCA). PCA monitors programs installed and run by the user and detects known compatibility problems. If this service is stopped, PCA will not function properly." "Program Compatibility Assistant Service" service is provided by PcaSvc.dll DLL file.

Detailed information on "Program Compatibility Assistant Service" service:

Service name: PcaSvc
Display name: Program Compatibility Assistant Service
Execution command: 
   C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted
Start type: Manual
Service status: Started
Dependencies:
   Remote Procedure Call (RPC)

"Program Compatibility Assistant Service" service is provided by a DLL file called: PcaSvc.dll:

Name: PcaSvc.dll
Location: C:\Windows\System32\PcaSvc.dll
Description: Program Compatibility Assistant Service
File version: 6.1.7600.16385
Size: 151 KB (154,624 bytes)
Modified: Monday, July 13, 2009, ?9:16:12 PM

Disabling "Program Compatibility Assistant Service" service may cause issues when running Windows XP system.

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

⇒⇒Windows XP Services Tutorials