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
    2011-04-17T20:50:53+00:00

    I get exactly the same issue in Windows 7 - the "Windows could not connect to the System Event Notification Service" service error, terribly slow bootup then no Aero.  This happens to me approx every 20-30 boots on my HP EliteBook 8540w  and seems as though it's more likely when I boot undocked from the docking station instead of docked which is where I have it 90% of the time.

    When I attempt to shut down it also takes a long time, usually a reboot fixes the issue although just now I'm on my second boot with the same behaviour occurring.  I suspect it will be resolved by a third reboot and it will probably occur again within 1 or 2 weeks even though there will have been no material change to the config of my computer.

    No obvious issues in the Event Logs, apart from a sprinkling of messages I haven't researched that I get every single boot and ignore with no ill consequences.  I suppose I'm going to have to start picking through these individual messages and figure out why I'm getting obscure errors reporting for software I didn't install myself and probably don't need.

    All of these suggestions to update drivers and run performance diagnostic or anti-malware software suggest to me that this is a general symptom of Windows having "trouble" as it boots, probably auto-disabling Aero to conserve resources, and I doubt we all have the same root cause.

    Any suggestions welcome - particularly if you have an HP laptop that goes a bit nuts in correlation with it being docked/not docked.

    Cheers,

    Michael

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  2. Anonymous
    2011-04-12T06:32:44+00:00

    If you are so concerned post a COMPLETE Event Viewer report!

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