Oct 15

MS KB 974571 and OCS/LCS

I am sure you must be facing this issue suddenly in your OCS production environment. This is quite interesting. Microsoft releases ‘Security updates’ and ends up bringing down a production server. One of the Windows security update KB974571 has broken OCS R2; that’s why OCS Front-End service Stopped.

You will receive a service specific error 3286842403 (0xC3E93C23).

Log Name: System
Source: Service Control Manager
Date: 10/15/2009 11:22:54 AM
Event ID: 7024
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: xxxxx
Description:
The Office Communications Server Front-End service terminated with service-specific error 3286842403 (0xC3E93C23).
Event Xml:

7024
0
2
0
0
0×80000000000000

54887

System
xxxxxx

Office Communications Server Front-End
3286842403 (0xC3E93C23)

Cause: Windows security update KB974571 has broken OCS R2; that’s why OCS Front-End service Stopped.
Resolution: Remove this Windows update & restart the OCS Front End Service.

It’s a bug in windows update….. They have managed bring down a critical product service with the release of a windows update.

This could happen for LCS & OCS R1 deployments also.

Please also note of another complexity that affects end users –
Auto-upgrades are enabled on end user desktops as well. Security Update KB974571 will be applied on end user desktops. Hence users will not be able to login to OCS though the FE Server is up, after removing the offending update from the FE Server.

But the users without this Security update will be able to login to OCS. To address this issue, end users too need to uninstall this update from their desktops. This is applicable for LCS as well.

Take a look at Communicationsserverteam.com for more info

Permanent link to this article: http://www.reijling.nl/?p=33

2 comments

    • Vimod on 15/07/2011 at 10:16

    Hi Jeroen,
    I am facing a similar issue with Lync Server. I have completed the installation of the Lync server and all the services are up except the “Lync Server Front End” , i have uninstalled the Security Update KB974571, restarted my Server but still the service is giving the same error “The Lync Server Front-End service terminated with service-specific error 3286842403 (0xC3E93C23).” . The following is the complete error detail.

    xmlns=”http://schemas.microsoft.com/win/2004/08/events/event”>

    7024
    0
    2
    0
    0
    0x80000000000000

    102904

    System
    XXXXXXXX


    Lync Server Front-End
    3286842403 (0xC3E93C23)

    Can you please help me with this?

    Thanks and Regards,
    Vimod

    • Jeroen on 16/07/2011 at 21:35
      Author

    Hi Vimod,

    Do you still have the issue? If so, please try the following possibilities:
    – Download ocsasnfix.exe from this URL: http://go.microsoft.com/fwlink/?LinkId=168248;
    – Run the local setup again;
    – Validate you have installed KB975858;

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