Windows could not connect to the System Event Notification Service service.

Anonymous
2010-05-10T21:02:56+00:00

Every so often, 1 in 50, my laptop is very slow to start-up I get the "Please Wait" before the login screen.  Once I do log in I get the error:  

"Failed to connect to a windows service.

Windows could not connect to the System Event Notification Service service. This problem prevents limited users from logging on to the system. As an administrative user, you can review the System Event Log for details about why the service didn't respond."

Aero seems to be disabled also and cannot be fixed without a restart.  This problem is getting to be bothersome and I need to know if it could be hardware related.  Thank you in advance for you help.

Windows for home | Previous Windows versions | Windows update

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Anonymous
2016-12-31T03:10:35+00:00

This works!!! 

 Reset the Winsock Catalog

  1. Open a Command Prompt as an Administrator.
  2. Type “netsh winsock reset” (without quotes) and press Enter.
  3. Restart the computer.

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Anonymous
2012-02-07T18:29:33+00:00

Hello Tim Wilson, PMP,

 Thank you for the response on this.  Since you are on a domain with this issue, please repost this question at the link provided below at the Microsoft TechNet Forums.

Microsoft TechNet Forums:

http://social.technet.microsoft.com/Forums/en-us/categories/

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Anonymous
2010-05-11T19:49:48+00:00

Hi,

Since when are you facing this issue?

Did you make any software or hardware changes to the computer recently?

Check if the System Event Notification Service is running or not. To check for the services

1.      Click on Start

2.      In the start Search box type Services

3.      Right Click on - RUN AS ADMIN

Check if the below mentioned services has the mentioned status and start up type.

System Event Notification Service            Started                 Automatic

Also, check the dependency services that are required for System Restore Service to run.

To check that double click on the service and click on the dependency tab.

For the system being slow you may try to improve the performance by optimizing Windows and check if that helps. Follow the link given below on how to optimize Windows.

Optimize Windows 7 for better performance

http://windows.microsoft.com/en-us/windows7/Optimize-Windows-7-for-better-performance

The aero issue can be resolved by installing or reinstalling the updated graphics card drivers. You may check if any update for the Graphics card is available for your computer from the computer manufacturer.

Refer to:****

Update a driver for hardware that isn't working properly

http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly

Update drivers: recommended links

http://windows.microsoft.com/en-US/windows7/Update-drivers-recommended-links

Hope this information is helpful.

Amrita M

Microsoft Answers Support Engineer

Visit our Microsoft Answers Feedback Forum and let us know what you think.

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  1. Anonymous
    2010-07-25T18:17:26+00:00

    I've just started having this problem as well. I have an Alienware M15x with Windows 7. 

    I've already checked System Event Notification Service and its dependencies and they're all running set to Automatically start when the computer starts, so no issues there.

    I also have the problem of extremely long Windows loading time looking at the "Please Wait" for about 2 minutes before I get a chance to log in. And of course, no Windows Aero.

    I'm certain the system isn't slow because of performance issues and I most certainly don't need to install or reinstall graphics card drivers. You must understand all these three issues (System event Notification Service, long loading time, and no Windows Aero) are all connected to each other. They're not independent issues.

    The problem just started last week. The first time it happened, I shut down the computer, removed the battery for 5 minutes, restarted the computer and everything worked fine and normal (short loading time, plus Windows Aero, and no errors on startup). The next day when I turned it on, same thing, except the battery trick didn't work anymore. So I looked the problem up online on other forums, and someone else had the same issue and someone had suggest to restart in Safe Mode and open Command Prompt and type "netsh wiinsock reset" and then restart the computer.

    That worked for about 3 days. Now that doesn't work anymore. I've restarted/shut down/waited 20 minutes and a dozen other combinations and solutions with Windows services and command prompt and regedit, and after about 3 hours of using the computer, I restarted it again, and everything started up normally. It seems like the problem is getting worse and worse.

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  2. Anonymous
    2011-03-16T02:55:04+00:00

    Had the same issue and this is what fixed it permanently:

    ... Before doing this it doesn't hurt to make sure your video drivers are completely up to date.

    Start -> Accessories -> Command Prompt (Run as administrator)

    At prompt type: netsh

    At netsh prompt type: winsock reset

    At netsh prompt type: exit

    At prompt type: exit

    Reboot your computer

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