What is "COM+ System Application" in my Windows 7 service list? And how is "COM+ System Application" service related to dllhost.exe?

"COM+ System Application" is a Windows 7 service that "Manages the configuration and tracking of Component Object Model (COM)+-based components. If the service is stopped, most COM+-based components will not function properly. If this service is disabled, any services that explicitly depend on it will fail to start." "COM+ System Application" service is provided by dllhost.exe EXE file.

Detailed information on "COM+ System Application" service:

Service name: COMSysApp
Display name: COM+ System Application
Execution command: 
   C:\Windows\system32\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235}
Start type: Manual
Service status: Stopped
Dependencies:
   COM+ Event System
   Remote Procedure Call (RPC)
   System Event Notification Service

"COM+ System Application" service is provided by an EXE file called: dllhost.exe:

Name: dllhost.exe
Location: C:\Windows\System32\dllhost.exe
Description: COM Surrogate
File version: 6.1.7601.16385
Size: 7.00 KB (7,168 bytes)
Modified: Monday, July 13, 2009, 9:14:18 PM

Disabling "COM+ System Application" service may cause issues when running Windows 7 system.

⇒ 'Lenovo Fingerprint Manager Pro Service - CoreService.exe' Service on Windows 7

⇐ "Bluetooth Service - btwdins.exe" Service on Windows 7

⇑ Application Services on Windows 7

⇑⇑ Windows 7 Services Tutorials