COM+ System Application - Windows Vista Service
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.
This service also exists in Windows 10, 11, 7, 8 and XP.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Manual | Manual | Manual |
| Home Basic | Manual | Manual | Manual |
| Home Premium | Manual | Manual | Manual |
| Business | Manual | Manual | Manual |
| Ultimate | Manual | Manual | Manual |
Default Properties
| Display name: | COM+ System Application |
| Service name: | COMSysApp |
| Type: | own |
| Path: | %WinDir%\system32\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235} |
| Error control: | normal |
| Object: | LocalSystem |
| Privileges: |
|
Default Behavior
The COM+ System Application service starts as LocalSystem and runs in its own process of dllhost.exe. It does not share its process with other services. If COM+ System Application fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the COMSysApp service has failed to start.
Dependencies
The COM+ System Application service won't start, if the following system components are stopped or disabled:
Restore Default Startup Type of COM+ System Application
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreCOMSystemApplicationWindowsVista.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the dllhost.exe file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.