General Information
Visual Studio 6 Enterprise requires this service to be running as well as several other services listed in the dependency section.
Windows 8
Default Description
Supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. 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 | Automatic (Started) |
| Windows 8 x64 | Automatic (Started) |
| Windows 8 Pro x86 | Automatic (Started) |
| Windows 8 Pro x64 | Automatic (Started) |
| Windows 8 Enterprise x86 | Automatic (Started) |
| Windows 8 Enterprise x64 | Automatic (Started) |
Service Name (registry): EventSystem
Display Name: COM+ Event System
Default Path and Command Line Options
C:\Windows\system32\svchost.exe -k LocalService
Log On As
Account: Local Service
Dependencies
Note: No dependencies are listed for any service in the WDP build I used to draft this information.
Windows 7
Default Description
Supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. 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 | SP1 |
|---|---|---|
| Windows 7 Starter | Automatic (Started) | Automatic (Started) |
| Windows 7 Home Basic | Automatic (Started) | Automatic (Started) |
| Windows 7 Home Premium | Automatic (Started) | Automatic (Started) |
| Windows 7 Professional | Automatic (Started) | Automatic (Started) |
| Windows 7 Ultimate | Automatic (Started) | Automatic (Started) |
| Windows 7 Enterprise | Automatic (Started) | Automatic (Started) |
Service Names
Service Name (registry): EventSystem
Display Name: COM+ Event System
Default Path and Command Line Options
C:\Windows\system32\svchost.exe -k LocalService
Log On As
Account: Local Service
Dependencies
What service COM+ Event System needs to function properly:
-
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)
What other service require COM+ Event System to function properly:
- Background Intelligent Transfer Service (S, HB, HP, P, U, E)
- COM+ System Application (S, HB, HP, P, U, E)
- SPP Notification Service (S, HB, HP, P, U, E)
-
System Event Notification Service(S, HB, HP, P, U, E)
- COM+ System Application (S, HB, HP, P, U, E)
Windows Vista
Default Description
Supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. 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 | SP1 | SP2 |
|---|---|---|---|
| Vista Home Basic | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Home Premium | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Business | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Ultimate | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Enterprise | Automatic (Started) | Automatic (Started) | Automatic (Started) |
Service Names
Service Name (registry): EventSystem
Display Name: COM+ Event System
Default Path and Command Line Options
C:\Windows\system32\svchost.exe -k LocalService
Log On As
Account: Local Service
Dependencies
What service COM+ Event System needs to function properly:
-
Remote Procedure Call (RPC)(HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
What other service require COM+ Event System to function properly:
- Background Intelligent Transfer Service (HB, HP, B, U)
- COM+ System Application (HB, HP, B, U)
- DFS Replication (HB, HP, B, U)
- SL UI Notification Service (HB, HP, B, U)
-
System Event Notification Service(HB, HP, B, U)
- COM+ System Application (HB, HP, B, U)
Windows XP Pro x64
Default Description
Supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. 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. This service is required for System Event Notification and Background Intelligent Transfer Service, which in turn, is required for Automatic Updates.
Used to check up to see if there is any critical or otherwise updates available for download. After the installation of Service Pack 1 or 2, you may configure how “often” updates are checked. Using default values, Windows XP “automatically” checks for updates at 3AM, downloads the updates and asks to “install” them. I do not recommend that you disable Automatic Updates.
It is very important that if you decide to disable this service, you check the Windows Update Version 6 web site often to ensure the latest patches install properly.
Take note: Manual updates via Windows Update Version 6 web site still requires Automatic Updates, Background Intelligent Transfer Service, <strong >COM+ Event System, Cryptographic Services, and Event Log to be running. Place all in automatic if you do not wish to update manually. In addition, I recommend that you change the default time of 3AM, for the automatic checking of updates, to a time when the system is “normally” on. Otherwise, Windows Update will check upon boot which may slow down the boot process.
For the fun of it, check:
“C:\Program Files\ComPlus Applications\”
On your system, see if you have any installed “COM+” Applications.
Take note: BootVis requires Task Scheduler and <strong >COM+ Event System to be running if you wish to take advantage of the “optimize system” function. Why is it required? It is due to the pre-fetching function built into Windows XP. Another Note: Pre-fetching only occurs on boot up and application start, so if you do not care about a few extra seconds of boot time, you may decide to not even bother with it and disable Task Scheduler. However, depending on the system and what applications are being used, pre-fetching may increase performance. Windows Media Player may also require this service for some “features” to function. MS’ .NET may require this service in the future.
Default Startup Type
| OS | SP0 | SP1 | SP2 |
|---|---|---|---|
| XP Pro x64 | ? | ? | Automatic |
Service Names
Service Name (registry): EventSystem
Display Name: COM+ Event System
Default Path and Command Line Options
C:\WINDOWS\system32\svchost.exe -k netsvcs
Log On As
Account: Local System Account
Dependencies
What service COM+ Event System needs to function properly:
What other service require COM+ Event System to function properly:
Windows XP
Default Description
Supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. 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. This service is required for System Event Notification. For the fun of it, check:
“C:\Program Files\ComPlus Applications\”
On your system, see if you have any installed “COM+” Applications.
Take note: BootVis requires Task Scheduler and <strong >COM+ Event System to be running if you wish to take advantage of the “optimize system” function. Why is it required? It is due to the pre-fetching function built into Windows XP. Another Note: Pre-fetching only occurs on boot up and application start, so if you do not care about a few extra seconds of boot time, you may decide to not even bother with it and disable Task Scheduler. However, depending on the system and what applications are being used, pre-fetching may increase performance. Windows Media Player may also require this service for some “features” to function. MS’ .NET may require this service.
Default Startup Type
| OS | SP0 | SP1 | SP2 | SP3 |
|---|---|---|---|---|
| XP Home | Manual (Started) | Manual (Started) | Manual (Started) | Manual (Started) |
| XP MCE 2005 | Manual (Started) | Manual (Started) | Manual (Started) | Manual (Started) |
| XP Pro | Manual (Started) | Manual (Started) | Manual (Started) | Manual (Started) |
| XP Tablet PC 2005 | Manual (Started) | Manual (Started) | Manual (Started) | Manual (Started) |
Service Names
Service Name (registry): EventSystem
Display Name: COM+ Event System
Default Path and Command Line Options
C:\WINDOWS\system32\svchost.exe -k netsvcs
Log On As
Account: Local System Account
Dependencies
What service COM+ Event System needs to function properly:
- Remote Procedure Call (RPC) (H, M, P, T)
What other service require COM+ Event System to function properly:
- System Event Notification (H, M, P, T)
Additional Reading
None at this time.