General Information
None at this time
Windows 8
Default Description
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.
Additional Information
None at this time.
Default Startup Type
| OS | SP0 |
|---|---|
| Windows 8 x86 | Manual (Started) |
| Windows 8 x64 | Manual (Started) |
| Windows 8 Pro x86 | Manual (Started) |
| Windows 8 Pro x64 | Manual (Started) |
| Windows 8 Enterprise x86 | Manual (Started) |
| Windows 8 Enterprise x64 | Manual (Started) |
Service Names
Service Name (registry): COMSysApp
Display Name: COM+ System Application
Display Name: COM+ System Application
Default Path and Command Line Options
C:\Windows\system32\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235}
Log On As
Account: Local System account
Dependencies
Note: No dependencies are listed for any service in the WDP build I used to draft this information.
Windows 7
Default Description
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.
Additional Information
This service is started upon system boot, but shortly after, it stops if not used.
Default Startup Type
| OS | SP0 | SP1 |
|---|---|---|
| Windows 7 Starter | Manual | Manual |
| Windows 7 Home Basic | Manual | Manual |
| Windows 7 Home Premium | Manual | Manual |
| Windows 7 Professional | Manual | Manual |
| Windows 7 Ultimate | Manual | Manual |
| Windows 7 Enterprise | Manual | Manual |
Service Names
Service Name (registry): COMSysApp
Display Name: COM+ System Application
Display Name: COM+ System Application
Default Path and Command Line Options
C:\Windows\system32\dllhost.exe
Log On As
Account: Local System account
Dependencies
What service COM+ System Application needs to function properly:
- COM+ Event System(S, HB, HP, P, U, E)
- Remote Procedure Call (RPC)(S, HB, HP, P, U, E)
- DCOM Server Process Launcher (S, HB, HP, P, U, E)
- RPC Endpoint Mapper (S, HB, HP, P, U, E)
- Remote Procedure Call (RPC)(S, HB, HP, P, U, E)
- Remote Procedure Call (RPC)(S, HB, HP, P, U, E)
- DCOM Server Process Launcher (S, HB, HP, P, U, E)
- RPC Endpoint Mapper (S, HB, HP, P, U, E)
- System Event Notification Service(S, HB, HP, P, U, E)
- COM+ Event System(S, HB, HP, P, U, E)
- Remote Procedure Call (RPC)(S, HB, HP, P, U, E)
- DCOM Server Process Launcher (S, HB, HP, P, U, E)
- RPC Endpoint Mapper (S, HB, HP, P, U, E)
- Remote Procedure Call (RPC)(S, HB, HP, P, U, E)
- COM+ Event System(S, HB, HP, P, U, E)
What other service require COM+ System Application to function properly:
- None (S, HB, HP, P, U, E)
Windows Vista
Default Description
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.
Additional Information
With Windows Vista Retail version, this service listed COM+ Event System and System Event Notification Service as depending on this service. This has been corrected in Service Pack 1.
Default Startup Type
| OS | SP0 | SP1 | SP2 |
|---|---|---|---|
| Vista Home Basic | Manual | Manual | Manual (Started) |
| Vista Home Premium | Manual | Manual | Manual (Started) |
| Vista Business | Manual | Manual | Manual (Started) |
| Vista Ultimate | Manual | Manual | Manual (Started) |
| Vista Enterprise | Manual | Manual | Manual (Started) |
Service Names
Service Name (registry): COMSysApp
Display Name: COM+ System Application
Display Name: COM+ System Application
Default Path and Command Line Options
C:\Windows\system32\dllhost.exe
Log On As
Account: Local System Account
Dependencies
What service COM+ System Application needs to function properly:
- COM+ Event System(HB, HP, B, U)
- Remote Procedure Call (RPC)(HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
- Remote Procedure Call (RPC)(HB, HP, B, U)
- Remote Procedure Call (RPC)(HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
- System Event Notification Service(HB, HP, B, U)
- COM+ Event System(HB, HP, B, U)
- Remote Procedure Call (RPC)(HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
- Remote Procedure Call (RPC)(HB, HP, B, U)
- COM+ Event System(HB, HP, B, U)
What other service require COM+ System Application to function properly:
- None (HB, HP, B, U)
Windows XP Pro x64
Default Description
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.
Additional Information
You will receive, in the Event Log, an entry from “DCOM” complaining about not having this service running if disabled. If set to manual, many services report to it, so it will start anyway. For the fun of it, check:
“C:\Program Files\ComPlus Applications”
On your system, see if you have any installed “COM+” Applications. This service is required for System Event Notification.
Default Startup Type
| OS | SP0 | SP1 | SP2 |
|---|---|---|---|
| XP Pro x64 | ? | ? | Automatic |
Service Names
Service Name (registry): COMSysApp
Display Name: COM+ System Application
Display Name: COM+ System Application
Default Path and Command Line Options
C:\WINDOWS\system32\dllhost.exe
Log On As
Account: Local System Account
Dependencies
What service COM+ System Application needs to function properly:
What other service require COM+ System Application to function properly:
- None
Windows XP
Default Description
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.
Additional Information
You will receive, in the Event Log, an entry from “DCOM” complaining about not having this service running if disabled. I am only aware of Visual Studio 6 Enterprise that uses COM+, but if set to manual, many services report to it, so it will start anyway. For the fun of it, check:
“C:\Program Files\ComPlus Applications”
On your system, see if you have any installed “COM+” Applications. If not, you can probably disable this service with no side effects (besides the Event Log complaining upon reboots).
Default Startup Type
| OS | SP0 | SP1 | SP2 | SP3 |
|---|---|---|---|---|
| XP Home | Manual | Manual | Manual | Manual |
| XP MCE 2005 | Manual | Manual | Manual | Manual |
| XP Pro | Manual | Manual | Manual | Manual |
| XP Tablet PC 2005 | Manual | Manual | Manual | Manual |
Service Names
Service Name (registry): COMSysApp
Display Name: COM+ System Application
Display Name: COM+ System Application
Default Path and Command Line Options
C:\WINDOWS\system32\dllhost.exe
Log On As
Account: Local System Account
Dependencies
What service COM+ System Application needs to function properly:
- Remote Procedure Call (RPC) (H, M, P, T)
What other service require COM+ System Application to function properly:
- None (H, M, P, T)
Additional Reading
None at this time.
